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Abstracts of new mineral descriptions.

Alsakharovite-Zn

Monoclinic

NaSrKZn (Ti,Nb)[.sub.4][[Si.sub.4][O.sub.12]][.sub.2] (O,OH)[.sub.4]*7[H.sub.2]O

Locality: Lepkhe-Nelm Mt., Lovozero alkaline massif, Kola Peninsula, Russia.

Occurrence: A hydrothermal mineral in cavities of a eudialyteaegirine-feldspar pegmatite. Associated minerals are: lamprophyllite, natrolite, halloysite, ranceite. kuzmenkoite-Zn, tsepinite-Na, vinogradovite, etc.

General appearance: Coarse, flattened prismatic crystals (up to 8 X 20 X 0.5 mm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: translucent to transparent. Color: white, pale brown, colorless. Streak: white. Luminescence: nonfluorescent. Hardness: ~5. Tenacity: brittle. Cleavage: not observed. Fracture: uneven. Density: 2.90 g/[cm.sup.3] (meas.), 2.94 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, Cm, a 14.495, b 13.945, c 7.838 [Angstrom], [beta] 117.75[degrees], V 1402 [[Angstrom].sup.3], Z 2, a:b:c = 1.0394:1:0.5621. Morphology: probably {100} and {001}; elongated along [010]. Twinning: micro-twinning on (001) and ([bar.4]01). X-ray powder diffraction data: 6.96 (100) (020, 001), 3.21 (80) (40[bar.2], 42[bar.1], 400), 3.11 (90) (041, 022, 240), 2.60 (35) (15[bar.1], 241, 202), 2.50 (40) (44[bar.1], 40[bar.3]), 1.74 (30) (080, 004), 1.70 (40) (46[bar.3], 44[bar.4], 461, 442). Optical data: Biaxial (+), [alpha] 1.680, [beta] 1.687, [gamma] 1.787, 2V(meas.) 25[degrees], 2V(calc.) 31[degrees]; dispersion not observed; nonpleochroic; Y = b. Chemical analytical data: Means of eight sets of electron microprobe data (with [H.sub.2]O by TGA): [Na.sub.2]O 2.04, [K.sub.2]O 2.43, MgO 0.04, CaO 1.48, MnO 0.11, FeO 0.22, ZnO 5.02, SrO 4.49, BaO 3.65, [Al.sub.2][O.sub.3] 0.15, Si[O.sub.2] 39.23, Ti[O.sub.2] 18.89, [Nb.sub.2][O.sub.5] 12.57, [H.sub.2]O 11.10, Total 101.42 wt.%. Empirical formula: ([Na.sub.0.68][Ca.sub.0.32])[.sub.[SIGMA]1.00]([Sr.sub.0.53][Na.sub.0.13])[.sub.[SIGMA]0.66]([K.sub.0.63][Ba.sub.0.29])[.sub.[SIGMA]0.92]([Zn.sub.0.76][Fe.sub.0.04][Mn.sub.0.0][Mg.sub.0.01])[.sub.[SIGMA]0.83]([Ti.sub.2.90][Nb.sub.1.16])[.sub.[SIGMA]4.06]([Si.sub.8.00][Al.sub.0.04])[.sub.[SIGMA]8.04][O.sub.24.00][[O.sub.2.90](OH)[.sub.1.10]][.sub.[SIGMA]4.00*] 7.00[H.sub.2]O. Relationship to other species: It is a member of the gutkovaite subgroup of the labuntsovite group.

Name: For Aleksey S. Sakharov (1910-1996), Russian geologist who actively studied the Lovozero alkaline massif. Comments: IMA No. 2002-003.

PEKOV, I. V., CHUKANOV, N.V., ZADOV, A. E., ROZENBERG, K. A., and RASTSVETAEVA, R. K. (2003) Alsakharovite-Zn, NaSrKZn(Ti,Nb)[.sub.4][[Si.sub.4][O.sub.12]][.sub.2](O,OH)[.sub.4]*7[H.sub.2]O, a new mineral of the labuntsovite group from Lovozero massif, Kola Peninsula. Zapiski Vserossiyskogo. Mineralogicheskogo Obshchestva 132, 52-58.

Anorthominasragrite

Triclinic

[V.sup.4+]O(S[O.sub.4])*5[H.sub.2]O

Locality: North Mesa mine group (west 1/2, southwest 1/4 of section 35, Township 224 South, Range 11 East), Temple Mountain mining district, Emery County, Utah, USA.

Occurrence: In a silicified tree approximately 46 cm wide by 30 cm high surrounded by a rim of coal 6 to 25 mm thick. Associated minerals are: orthominasragrite and bobjonesite.

General appearance: Crusts and spherical granular aggregates (<1 mm across) of irregular grains (<0.1 mm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: not stated but probably transparent. Color: pale blue. Streak: white. Luminescence: nonfluorescent. Hardness: approximately 1. Tenacity: not given. Cleavage: none. Fracture: not given. Density: could not be measured, 2.12 g/[cm.sup.3] (calc.). Crystallography: Triclinic, P[bar.1], a 7.548, b 7.805, c 7.821 [Angstrom], [alpha] 79.03[degrees], [beta] 71.94[degrees], [gamma] 65.31[degrees], V 397.1 [[Angstrom].sup.3], Z 2, a:b:c = 0.9671:1:1.0020. Morphology: no forms were observed. Twinning: none mentioned. X-ray powder diffraction data: 7.053 (80) (010), 6.617 (100) (100), 5.314 (30) (011), 4.116 (80) ([bar.1]10), 3.712 (80) (121, 002, 211), 3.206 (70) (221), 2.934 (50) (1[bar.1]2, [bar.1]02), 2.555 (30) (131). Optical data: Biaxial (+), [alpha] 1.548, [beta] 1.555, [gamma] 1.574, 2V(meas.) 86[degrees], 2V(calc.) 63[degrees]; dispersion not mentioned; nonpleochroic; X ^ c [approximately equal to] 18[degrees] in obtuse angle [beta], Y [approximately equal to] a, Z ^ b [approximately equal to] 19[degrees] in obtuse angle [gamma]. Chemical analytical data: electron microprobe data: V[O.sub.2] 33.93, S[O.sub.3] 30.78, [H.sub.2]O (35.52), Total (100.23) wt.%. Empirical formula: [V.sub.1.04][O.sub.1.08](S[O.sub.4])[.sub.0.98]*5.00[H.sub.2]O. Relationship to other species: It is the triclinic polymorph of minasragrite (monoclinic) and orthominasragrite (orthorhombic).

Name: For the relationship to minasragrite and orthominasragrite. Comments: IMA No. 2001-040.

COOPER, M. A., HAWTHORNE, F. C., GRICE, J. D., and HAYNES, P. (2003) Anorthominasragrite, [V.sup.4+])O(S[O.sub.4]([H.sub.2]O)[.sub.5], a new mineral species from Temple Mountain, Emery County, Utah, U.S.A.: description, crystal structure and hydrogen bonding. Canadian Mineralogist 41, 959-980.

Artsmithite

Monoclinic

[Hg.sub.4.sup.1+] Al(P[O.sub.4])[.sub.2-x](OH)[.sub.1+3x] (x = 0.26)

Locality: The Funderburk prospect (Lat. 34.177[degrees] N, Long. 93.659[degrees] W) north of Cowhide Cove road, Cowhide Cove Recreation area, on Lake Greeson, approximately 13 km north of Murfeesboro, Pike County, Arkansas, USA.

Occurrence: In fractures in the Jackfork sandstone with cinnabar, quartz and dickite and other mercury minerals (calomel, eglestonite, mercury, metacinnabar, montroydite, terlinguaite).

General appearance: A matted nest (approximately 3 X 1 mm) of randomly scattered fibrous to acicular crystals.

Physical, chemical and crystallographic properties: Luster: stated to be vitreous but the optical data indicate adamantine. Diaphaneity: transparent. Color: colorless. Streak: off-white to cream. Luminescence: nonfluorescent. Hardness: could not be determined. Tenacity: needles are flexible. Cleavage: none. Fracture: irregular. Density: could not be measured, 6.37 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/c, a 17.022, b 9.074, c 7.015 [Angstrom], [beta] 101.20[degrees], V 1062.9 [[Angstrom].sup.3], Z 4, a:b:c = 1.8759:1:0.7731. Morphology: no forms could be identified. Twinning: none mentioned. X-ray powder diffraction data: 8.326 (100) (200), 4.739 (50) (310), 2.979 (80) (202), 2.952 (50) ([bar.4]02), 2.784 (80) (600), 2.660 (75) (330), 1.755 (50) (640, [bar.2]04). Optical data: Biaxial (+), indices of refraction could not be measured but the mean value calculated from the Gladstone-Dale relationship is 1.94 to 1.99, 2V(meas.) approximately 60[degrees], dispersion r < v, distinct; parallel extinction and length slow with Z < c. Chemical analytical data: One set of electron microprobe data (with [H.sub.2]O calculated by stoichiometry): [Hg.sub.2]O 78.28, [Al.sub.2][O.sub.3] 5.02, [P.sub.2][O.sub.5] 11.39, [H.sub.2]O (1.63), Total (96.32) wt.%. Empirical formula: [Hg.sub.3.97][Al.sub.1.04](P[O.sub.4])[.sub.1.70](OH)[.sub.1.91]. Relationship to other species: None apparent.

Name: For Arthur ("Art") E. Smith (1935-) who collected the mineral. Comments: IMA No. 2002-039.

ROBERTS, A. C., COOPER, M. A., HAWTHORNE, F. C., GAULT, R. A., GRICE, J. D., and NIKISCHER, A. J. (2003) Artsmithite, a new [Hg.sup.1+]-Al phosphate-hydroxide from the Funderburk prospect, Pike County, Arkansas, U.S.A. Canadian Mineralogist 41, 721-725.

Bobjonesite

Monoclinic

[V.sup.4+]O(S[O.sub.4])([H.sub.2]O)[.sub.3]

Locality: The North Mesa 5 mine, SW 1/4 of section 35, and the adjacent eastern edge of section 34, Township 24 South, Range 11 East, Emery County, Utah, USA.

Occurrence: In a silicified tree in the Shinarump conglomerate. The tree has a rim of coal 6 to 25 mm thick. Associated minerals are: ferricopiapite, kornelite, rozenite, szomolnokite, sulfur, montroseite, anorthominasragrite, orthominasragrite, minasragrite and an unidentified yellow-green hydrated Fe-V sulfate.

General appearance: Crusts and efflorescences with individual grains [much less than] 1 mm.

Physical, chemical and crystallographic properties: The mineral is unstable in all but the driest air and hydrates easily. Consequently, some of the following properties were determined from synthetic material. Luster: vitreous. Diaphaneity: Not given but probably transparent to translucent. Color: pale blue. Streak: pale blue. Luminescence: nonfluorescent in ultraviolet light. Hardness: approximately 1. Tenacity: not given. Cleavage: not observed. Fracture: not given. Density: could not be measured because of the instability of the mineral, 2.28 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, P[2.sub.1]/n, a 7.394, b 7.411, c 12.0597 [Angstrom], [beta] 106.55[degrees], V 633.5 [[Angstrom].sup.3], Z 4, a:b:c = 0.9977:1:1.6272. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 6.962 (11) ([bar.1]01), 6.255 (11) (011), 5.795 (100) (002), 5.408 (37) (101), 4.571 (20) (012), 3.881 (48) ([bar.1]03), 3.498 (90) (112), 3.423 (10) (013). Optical data: Biaxial (+), [alpha] 1.555, [beta] 1.561, [gamma] 1.574, 2V(meas.) 72[degrees], 2V(calc.) 69[degrees]; dispersion not mentioned; nompleochroic; X = b, Y < a, Z ^ c < 19[degrees] in obtuse angle [beta]. Chemical analytical data: Because of the instability of the mineral an electron microprobe analysis could not be carried out. The ideal formula requires: V[O.sub.2] 38.21, S[O.sub.3] 36.88, [H.sub.2]O 24.91, Total 100.00 wt.%. Relationship to other species: Anorthominasragrite (triclinic), orthominasragrite (orthorhombic) and minasragrite (monoclinic) are polymorphs of the higher hydrate [V.sup.4+]O(S[O.sub.4])([H.sub.2]O)[.sub.5].

Name: For Robert (Bob) Jones (1926-) of Cave Creek, Arizona, USA, in recognition of his enormous contribution to the mineralogical community. Comments: IMA No. 2000-045A. The crystal structure has been determined.

SCHINDLER, M., HAWTHORNE, F. C., HUMINICKI, D. M. C., HAYNES, P., GRICE, J. D., and EVANS, H. T. Jr. (2003) Bobjonesite, [V.sup.4+]O(S[O.sub.4])([H.sub.2]O)[.sub.3], a new mineral species from Temple Mountain, Emery County, Utah, U.S.A. Canadian Mineralogist 41, 83-90.

Borocookeite

Monoclinic

[Li.sub.1+3x][Al.sub.4-x](B[Si.sub.3])[O.sub.10](OH,F)[.sub.8]

Locality: The Sosedka and Mokhovaya pegmatite veins, Malkhan pegmatite field, Krasny Chikoy area, Chita region, Russia.

Occurrence: In pockets of pegmatites. Associated minerals are: elbaite, lepidolite, danburite, boron-rich muscovite, laumontite, quartz and albite.

General appearance: Massive nearly monomineralic aggregates or thin (0.5 to 2 mm) crusts and snow-like coatings on other minerals.

Physical, chemical and crystallographic properties: Luster: greasy. Diaphaneity: given as "not transparent," so presumably translucent. Color: light gray with a pinkish or yellowish hue. Streak: light pinkish gray. Luminescence: not given. Hardness: 3. Tenacity: given as "not elastic." Cleavage: {001} perfect. Fracture: not observed. Density: 2.62 g/[cm.sup.3] (meas.), 2.68 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, space group not given but probably Cc by analogy with cookeite, a 5.110, b 8.856, c 14.080 [Angstrom], [beta] 96.93[degrees], V 632.2 [[Angstrom].sup.3], Z 2, a:b:c = 0.5768:1:1.5881. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 7.05 (50) (002), 4.71 (70) (003), 3.512 (100) (004), 2.807 (20) (005), 2.332 (14) (006), 2.304 (16) (202), 1.946 (17) (204). Optical data: Biaxial (+), [alpha] 1.574, [beta] 1.580, [gamma] 1.591, 2V could not be measured, 2V(calc.) 73[degrees]; dispersion not determined; nonpleochroic; Z = elongation. Chemical analytical data: Analysis by wet chemistry ([B.sub.2][O.sub.3], BeO, [H.sub.2]O, F), flame photometry ([Li.sub.2]O, [Rb.sub.2]O, [Cs.sub.2]O) and electron microprobe (Si[O.sub.2], Ti[O.sub.2], [Al.sub.2][O.sub.3], FeO, MnO, MgO, CaO, [K.sub.2]O, [Na.sub.2]O) gave (after deduction of about 2 wt.% quartz and recalculation to 100 wt.%): [Li.sub.2]O 4.65, [Na.sub.2]O 0.01, [K.sub.2]O n.d., [Rb.sub.2]O 0.004, [Cs.sub.2]O 0.005, BeO 0.05, MgO 0.04, CaO 0.08, MnO 0.07, FeO 0.06, [B.sub.2][O.sub.3] 4.06, [Al.sub.2][O.sub.3] 41.77, Si[O.sub.2] 34.19, Ti[O.sub.2] 0.02, [H.sub.2]O 14.28, F 1.22, sum 100.51, less O=F 0.51, Total 100.51 wt.%. Empirical formula: ([Li.sub.1.59][Ca.sub.0.08][Mg.sub.0.01][Mn.sub.0.01])[.sub.[SIGMA]1.69][Al.sub.3.68]([Si.sub.2.90][Al.sub.0.50][B.sub.0.59][Be.sub.0.01])[.sub.[SIGMA]4.00][O.sub.9.59][(OH)[.sub.8.08][F.sub.0.33]][.sub.[SIGMA]8.41]. Relationship to other species: It is the boron-dominant analogue of cookeite.

Name: For the relationship to cookeite. Comments: IMA No. 2000-013.

ZAGORSKY, V. Y., PERETYAZHKO, I. S., SAPOZHNIKOV, A. N., ZHUKHLISTOV, A. P., and ZVYAGIN, B. B. (2003) Borocookeite, a new member of the chlorite group from the Malkhan gem tourmaline deposit, Central Transbaikalia, Russia. American Mineralogist 88, 830-836.

Brinrobertsite

Monoclinic

An ordered, mixed layer, dioctahedral pyrophyllite/smectite

Locality: 750 m NE of Penrhyn castle, near Bangor, North Wales, UK.

Occurrence: In a metabentonite within a sequence of dark gray mudstones. Associated minerals are: quartz and a chlorite group mineral.

General appearance: Anhedral grains in aggregates up to 0.02 mm across. Individual grains are less than 1 [ohm].

Physical, chemical and crystallographic properties: Luster: dull to vitreous. Diaphaneity: translucent. Color: gray to yellowish gray. Streak: gray. Luminescence: not mentioned. Hardness: close to 1. Tenacity: not given. Cleavage: {001} as observed by TEM. Fracture: not given. Density: could not be measured or calculated. Crystallography: Monoclinic or pseudo-monoclinic, [d.sub.100] 5.2, b 9.1, [d.sub.001] 24 to 25 [Angstrom]. Morphology: no forms were observed. Twinning: none observed. X-ray powder diffraction data: Air dried: 22.29 (48) (001), 10.99 (100) (002), 7.32 (2) (003), 5.48 (7) (004), 4.47 (3) (005), 3.17 (33) (007), 2.22 (<1) (00.10), 2.01 (4) (00.11), 1.84 (1) (00.12). Glycol-solvated: 26.80 (100) (001), 13.21 (33) (002), 9.02 (9) (003), 6.66 (2) (004), 5.30 (7) (005), 4.48 (3) (006), 3.82 (1) (007), 3.33 (20) (008), 2.97 (3) (009), 2.66 (1) (00.10), 2.46 (<1) (00.11), 2.22 (<1) (00.12), 2.04 (1) (00.13), 1.91 (2) (00.14). Optical data: none available. Chemical analytical data: Five sets of XRF data are given. One of these consists of: Si[O.sub.2] 74.82, [Al.sub.2][O.sub.3] 12.01, Ti[O.sub.2] 0.17, [Fe.sub.2][O.sub.3] 7.66, MgO 1.03, CaO 0.17, [Na.sub.2]O 1.03, [K.sub.2]O 0.31, MnO 0.06, [P.sub.2][O.sub.5] 0.02, LOI 3.01, Total 100.30 wt.%. Relationship to other species: It is made up of pyrophyllite-like and smectite-like units.

Name: For Dr. Brin Roberts, Birkbeck College, University of London, UK. Comments: IMA No. 1997-040B. Descriptions of interstratified minerals lack many of the usual mineralogical data but the minerals are considered valid species. The designation "RI" in the reference stands for "Reichweite Illite."

DONG, H., PEACOR, D. R., MERRIMAN, R. J., and KEMP, S. J. (2002) Brinrobertsite, a new RI interstratified pyrophyllite/smectite-like clay mineral: characterization and geological origin. Mineralogical Magazine 66, 605-617.

Calderonite

Monoclinic

[Pb.sub.2][Fe.sup.3+](V[O.sub.4])[.sub.2](OH)

Localities: Las Colmenitas and Los Llanos mine, 2 km NW of Santa Marta village (Lat. 38[degrees]37' N, Long. 6[degrees]36' E), Badajoz province, Spain. It also occurs at the La Muda mine, in Azuaga (Lat. 38[degrees]20'20" N, Long, 5[degrees]47'30" E), Badajoz province, Spain; Venus mine, Sierra Gorda, Argentina; Nepomucene mine, Annaberg, Austria.

Occurrence: In the upper oxidation zone of the two Pb-Zn hydrothermal deposits. Associated minerals are: vanadinite and descloizite. Other minerals not directly associated with calderonite are: wulfenite, mimetite, cerussite, beudantite, adamite, hemimorphite, smithsonite, chalcophanite, silver, quartz and Ca-Fe carbonates.

General appearance: Scattered clusters of idiomorphic prismatic crystals up to 1 mm long.

Physical, chemical and crystallographic properties: Luster: vitreous to resinous. Diaphaneity: semitransparent to translucent. Color: deep orange to red brown. Streak: red orange. Luminescence: nonfluorescent. Hardness: between 3 and 4. Tenacity: not given. Cleavage: not given. Fracture: splintery. Density: not given, 6.08 g/[cm.sup.3] (calc.) by the abstractor. Crystallography: Monoclinic, P[2.sub.1]/m, a 7.647, b 6.094, c 8.900 [Angstrom], [beta] 112.0[degrees], V 384.5 [[Angstrom].sup.3], Z 2, a:b:c = 1.2548:1:1.4605. Morphology: no forms were listed, but the SEM photograph shows several forms. Twinning: none mentioned. X-ray powder diffraction data: 4.893 (43) (011), 4.166 (34) (002), 3.401 (21) ([bar.2]02), 3.242 (100) ([bar.2]11), 3.058 (25) (020), 2.980 (48) ([bar.1]03), 2.746 (48) (003), 2.449 (20) (022). Optical data: Biaxial (+), indices of refraction not given (the mean index of refraction calculated by the abstractor from the Gladstone-Dale relationship is 2.25), 2V(meas.) 86[degrees] given as 2[V.sub.x] which indicates biaxial (-), dispersion strong; pleochroism X = light greenish yellow, Y = brown, Z = reddish brown; orientation not given. Chemical analytical data: Means of twenty-one sets of electron microprobe data ([H.sub.2]O by TGA): PbO 61.80, CaO 0.03, BaO 0.32, CuO 0.67, ZnO 0.09, [Al.sub.2][O.sub.3] 0.11, [Fe.sub.2][O.sub.3] 10.12, [Mn.sub.2][O.sub.3] < 0.01, Si[O.sub.2] 0.33, [V.sub.2][O.sub.5] 23.86, [As.sub.2][O.sub.5] 0.13, [P.sub.2][O.sub.5] 0.57, [H.sub.2]O 1.91, Total 99.94 wt.%. Empirical formula: ([Pb.sub.1.95][Ba.sub.0.01])[.sub.[SIGMA]1.96]([Fe.sub.0.89.sup.3+][Cu.sub.0.06][Al.sub.0.02][Zn.sub.0.01])[.sub.[SIGMA]0.98]([V.sub.1.85][P.sub.0.06][Si.sub.0.01][As.sub.0.01])[.sub.[SIGMA]1.96][O.sub.7.51](OH)[.sub.1.49]. Ideally, [Pb.sub.2][Fe.sup.3+](V[O.sub.4])[.sub.2](OH). Relationship to other species: It is the Pb-, [Fe.sup.3+]-, V[O.sub.4]- dominant member of the brackebuschite group and, therefore, the [Fe.sup.3+]-dominant analogue of brackebuschite and the Pb-dominant analogue of gamagarite.

Name: For Professor Salvador Calderon (1852-1911). Comments: IMA No. 2001-022.

DEL TANAGO, J. G., LA IGLESIA, A., RIUS, J., and SANTIN, S. F. (2003) Calderonite, a new lead-iron-vanadate of the brackebuschite group. American Mineralogist 88, 1703-1708.

Carbokentbrooksite

Trigonal

(Na,[square])[.sub.12](Na,Ce)[.sub.3][Ca.sub.6][Mn.sub.3][Zr.sub.3]Nb([Si.sub.25][O.sub.73](OH)[.sub.3](C[O.sub.3])*[H.sub.2]O

Locality: Dara-i-Pioz alkaline massif, Tajikistan.

Occurrence: In the quartz core of a zoned pegmatite. Associated minerals are: zirsilite-(Ce), quartz, microcline, aegirine, still-wellite-(Ce), ekanite, polylithionite, pyrochlore, fluorite, calcite and galena.

General appearance: As zoned rhombohedral crystals up to 2 cm across, with a carbokentbrooksite core and a zirsilite-(Ce) rim.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: yellow. Streak: white. Luminescence: nonfluorescent. Hardness: 5. Tenacity: brittle. Cleavage: not observed. Fracture: conchoidal. Density: 3.14 g/[cm.sup.3] (meas.), 3.10 g/[cm.sup.3] (calc.). Crystallography: Trigonal, R3m, a 14.239, c 30.039 [Angstrom], V 5274 [[Angstrom].sup.3], Z 3, c:a = 2.1096. Morphology: {101}, {102}, {010}, {001}. Twinning: none mentioned. X-ray powder diffraction data: 6.39 (25) (014), 4.30 (24) (025), 3.394 (23) (035), 3.204 (38) (028), 3.155 (35) (127), 3.019 (34) (042), 2.970 (83) (135), 2.849 (100) (044), 2.590 (30) (039). Optical data: Uniaxial (-), [omega] 1.645, [epsilon] 1.635, nonpleochroic. Chemical analytical data: Electron microprobe data: [Na.sub.2]O 10.17, [K.sub.2]O 0.51, CaO 10.61, SrO 1.42, MnO 5.41, FeO 2.22, [La.sub.2][O.sub.3] 1.79, [Ce.sub.2][O.sub.3] 2.97, [Pr.sub.2][O.sub.3]0.24, [Nd.sub.2][O.sub.3] 0.76, [Y.sub.2][O.sub.3] 0.43, Si[O.sub.2] 45.55, Ti[O.sub.2] 0.41, Zr[O.sub.2] 11.07, [Nb.sub.2][O.sub.5] 3.55, [H.sub.2]O 1.18, Cl 0.29, C[O.sub.2] 0.29, sum 99.36, less O = Cl 0.06, Total 99.30 wt.%. Empirical formula: ([Na.sub.9.48][Ca.sub.0.94][K.sub.0.36])[.sub.[SIGMA]10.78]([Na.sub.1.39][Sr.sub.0.45][Ce.sub.0.60][La.sub.0.36][Nd.sub.0.15][Pr.sub.0.05])[.sub.[SIGMA]3.00]([Ca.sub.5.32][Mn.sub.0.55][Y.sub.0.13])[.sub.[SIGMA]6.00]([Zr.sub.2.97][Ti.sub.0.03])[.sub.[SIGMA]3.00]([Nb.sub.0.88][Ti.sub.0.14])[.sub.[SIGMA]1.02][Si.sub.25.11][O.sub.73.62][(OH)[.sub.4.34][Cl.sub.0.27]][.sub.[SIGMA]4.61] (C[O.sub.3])[.sub.0.59]. Relationship to other species: It is a member of the eudialyte group.

Name: For the relationship with kentbrooksite. Comments: IMA No. 2002-056. The indexing of the powder pattern in the paper is somewhat different from that given here.

KHOMYAKOV, A. P., DUSMATOV, V. D., FERRARIS, G., GULA, A., IVALDI, G., and NECHELYUSTOV, G. N. (2003) Zirsilite-(Ce), (Na,[square])[.sub.12](Ce,Na)[.sub.3][Ca.sub.6][Mn.sub.3][Zr.sub.3]Nb([Si.sub.25][O.sub.73])(OH)[.sub.3](C[O.sub.3])*[H.sub.2]O and Carbokentbrooksite, (Na,[square])[.sub.12](Na,Ce)[.sub.3][Ca.sub.6][Mn.sub.3][Zr.sub.3]Nb([Si.sub.25][O.sub.73])(OH)[.sub.3](C[O.sub.3])*[H.sub.2]O, two new eudialyte group minerals from Dara-i-Pioz alkaline massif, Tajikistan. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 132(5), 40-51.

Cattiite

Triclinic

[Mg.sub.3](P[O.sub.4])[.sub.2]*22[H.sub.2]O

Locality: Zhelezny Mine, Kovdor Massif, Kola Peninsula, Russia.

Occurrence: In cavities in dolomite carbonatite. Associated minerals are: dolomite, bakhchisaraitsevite, nastrophite, magnetite, sjogrenite and carbonate-fluorapatite.

General appearance: Crystalline masses up to 1.5 cm.

Physical, chemical and crystallographic properties: Luster: vitreous, pearly on cleavages. Diaphaneity: transparent. Color: colorless. Streak: white. Luminescence: not observed. Hardness: 2. Tenacity: not mentioned. Cleavage: {001} perfect. Fracture: uneven. Density: 1.65 g/[cm.sup.3] (meas.), 1.64 g/[cm.sup.3] (calc.). Crystallography: Triclinic, P[bar.1], a 6.932, b 6.925, c 16.154 [Angstrom], [alpha] 82.21[degrees], [beta] 89.70[degrees], [gamma] 119.51[degrees], V 666.3 [[Angstrom].sup.3], Z 1, a:b:c = 1.0010:1:2.3327. Morphology: {001}. Twinning: none mentioned. X-ray powder diffraction data: 7.98 (100) (002), 5.32 (63) (003), 3.19 (45) (1[bar.1]4), 2.896 (33) (202), 2.867 (30) ([bar.2]22), 2.728 (32) (1[bar.1]5), 2.658 (37) (006). Optical data: Biaxial (-), [alpha] 1.459, [beta] 1.470, [gamma] 1.470, 2V(meas.) 25[degrees], 2V(calc.) 0[degrees]; dispersion r < v, weak; nonpleochroic; X ^ c = 80[degrees], Y ^ a = 10[degrees], Z ^ c = 90[degrees], optic axial plane close to (001). Chemical analytical data: A wet chemical analysis of a 243.5 mg sample ([H.sub.2]O by weight loss at 1000[degrees]C) gave: MgO 18.0, FeO 0.1, [P.sub.2][O.sub.5] 21.8, [H.sub.2]O 60.8, Total 100.7 wt.%. Empirical formula: ([Mg.sub.2.92][Fe.sub.0.01])[.sub.[SIGMA]2.93](P[O.sub.4])[.sub.2.01]*22.05[H.sub.2]O. Relationship to other species: It is the natural -1A2 polytype of synthetic [Mg.sub.3](P[O.sub.4])[.sub.2]*22[H.sub.2]O.

Name: For Michele Catti (1945-), Professor of Physical Chemistry, University of Milano Bicocca, Italy, for his contributions to the crystal chemistry of hydrated oxysalts. Comments: IMA No. 2000-032.

BRITVIN, S. N., FERRARIS, G., IVALDI, G., BOGDANOVA, A. N., and CHUKANOV, N. V (2002) Cattiite, [Mg.sub.3](P[O.sub.4])[.sub.2]*22[H.sub.2]O, a new mineral from Zhelezny Mine (Kovdor Massif, Kola Peninsula, Russia). Neues Jahrbuch fur Mineralogie, Monatshefte 2002, 160-168.

Cavoite

Orthorhombic

Ca[V.sub.3][O.sub.7]

Locality: Gambatesa mine, near Reppia, northern Appenines, Val Graveglia, Liguria, Italy.

Occurrence: In micro-cavities in massive bands of caryopilite + calcian rhodochrosite [+ or -] quartz. Another associated mineral is an unidentified silicate.

General appearance: Very rare radiated aggregates of strongly elongated prismatic to acicular crystals up to about 0.28 mm long.

Physical, chemical and crystallographic properties: Luster: vitreous to adamantine. Diaphaneity: transparent. Color: colorless to olive green-brown. Streak: near white. Luminescence: nonfluorescent. Hardness: could not be determined. Tenacity: brittle. Cleavage: not observed. Fracture: not mentioned. Density: could not be determined, 3.51 g/[cm.sup.3] (calc.). Crystallography: Orthorhombic, Pnam, a 10.42, b 5.28, c 10.34 [Angstrom], V 568.2 [[Angstrom].sup.3], Z 4, a:b:c = 1.9735:1:1.9583. Morphology: no forms were mentioned. Twinning: none observed. X-ray powder diffraction data: 5.16 (M) (200), 3.45 (W) (211, 112), 3.00 (S) (212), 2.88 (W) (0.13, 203), 1.85 (M) (024), 1.56 (W) (612, 033, 216). Optical data: could not be determined but a value of about 2 was measured roughly for the index of refraction. Chemical analytical data: Means of ten sets of electron microprobe data: [K.sub.2]O 0.35, CaO 17.76, MnO 0.70, Si[O.sub.2] 4.31, V[O.sub.2] 76.80, Total 99.92 wt.%. Empirical formula: ([Ca.sub.0.95][Mn.sub.0.03][K.sub.0.02])[.sub.[SIGMA]1.00]([V.sub.2.79][Si.sub.0.22])[.sub.[SIGMA]3.01][O.sub.7.00]. Relationship to other species: It is the natural analogue of synthetic Ca[V.sub.3][O.sub.7].

Name: For the chemical composition, calcium, vanadium, oxygen. Comments: IMA No. 2001-024.

BASSO, R., LUCCHETTI, G., MARTINELLI, A., and PALENZONA, A. (2003) Cavoite, [Ca.sub.3][O.sub.7], a new mineral from the Gambatesa mine, northern Appenines, Italy. European Journal of Mineralogy 15, 181-184.

Cejkaite

Triclinic

[Na.sub.4](U[O.sub.2])(C[O.sub.3])[.sub.3]

Locality: The Geschieber vein, Svornost mine, Jachymov, NW Bohemia, Czech Republic.

Occurrence: An efflorescence on a calcite vein with disintegrated uraninite in a single specimen. Secondary associated minerals are andersonite and schrockingerite but they are not in direct contact with cejkaite.

General appearance: An earthy efflorescence consisting of crystals from 0.2 to 0.6 [micro]m.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: not observed. Color: pale yellow to beige. Streak: light yellow. Luminescence: fluoresces weak yellow to yellow-green in short- and long-wave ultraviolet light. Hardness: could not be determined. Tenacity: could not be determined. Cleavage: could not be determined. Fracture: could not be determined. Density: 3.67 g/[cm.sup.3] (meas.), 3.77 g/[cm.sup.3] (calc.). Crystallography: Triclinic, P1 or P[bar.1], a 9.291, b 9.292, c 12.895 [Angstrom], [alpha] 90.73[degrees], [beta] 90.82[degrees], [gamma] 120.00[degrees], V 963.7 [[Angstrom].sup.3], Z 4, a:b:c = 0.9999:1:1.3878. Morphology: no forms were identified, but individual crystallites display indistinct hexagonal morphology in TEM images. Twinning: none mentioned. X-ray powder diffraction data: 8.022 (92) (1[bar.1]0, 010, 100), 5.080 (57) ([bar.1]02, 0[bar.1]2), 5.024 (60) ([bar.1]12, 1[bar.1]2), 4.967 (68) (012, 102), 4.639 (100) (1[bar.2]0, 2[bar.1]0, 110), 3.221 (63) (004), 2.681 (60) (3[bar.3]0, [bar.1][bar.1]4, 030, 300). Optical data: could not be determined due to the extremely small grain size. The mean index of refraction derived from Gladstone-Dale calculations is 1.5825 which is consistent with the mean index of refraction measured for the trigonal polymorph of cejkaite. Chemical analytical data: A combination of ICP MS and thermal analysis (with C[O.sub.2] by difference) gave: [Na.sub.2]O 21.39, MgO 0.15, FeO 0.53, U[O.sub.3] 53.93, C[O.sub.2] (24.00), Total (100.00) wt.%. Empirical formula: ([Na.sub.3.77][Fe.sub.0.04][Mg.sub.0.02])[.sub.[SIGMA]3.83](U[O.sub.2])[.sub.1.03](C[O.sub.3])[.sub.2.98]. Relationship to other species: It is structurally similar to synthetic trigonal [Na.sub.4](U[O.sub.2])(C[O.sub.3])[.sub.3].

Name: For Dr. Jiri Cejka (1929-), former Director of the Museum of Natural History of the National Museum in Prague, in recognition of his numerous contributions to the crystal chemistry of uranium minerals. Comments: IMA No. 1999-045.

ONDRUS, P., SKALA, R. VESELOVSKY, F., SEJKORA, J., and VITTI, C. (2003) Cejkaite, the triclinic polymorph of [Na.sub.4](U[O.sub.2])(C[O.sub.3])[.sub.3]--a new mineral from Jachymov, Czech Republic. American Mineralogist 88, 686-693.

Clinobarylite

Monoclinic

Ba[Be.sub.2][Si.sub.2][O.sub.7]

Locality: Yukspor Mt., Khibiny massif, Kola Peninsula, Russia.

Occurrence: In four alkaline pegmatite veins. Associated minerals are: natrolite, aegirine, microcline, catapleiite, fluorapatite, titanite, fluorite, galena, sphalerite, strontianite, annite, astrophyllite, lorenzenite, labuntsovite-Mn, kuzmenkoite-Mn, cerite-(Ce), edingtonite, ilmenite and calcite.

General appearance: Platy to prismatic crystals (up to 20 X 4 X 1 mm) and radiated aggregates.

Physical, chemical and crystallographic properties: Luster: strong vitreous. Diaphaneity: transparent. Color: colorless. Streak: white. Luminescence: nonfluorescent. Hardness: 6 1/2. Tenacity: brittle. Cleavage: {100} perfect, {001} and {101} less perfect. Fracture: uneven. Density: 3.97 g/[cm.sup.3] (meas.), 4.10 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, Pm, a 11.618, b 4.904, c 4.655 [Angstrom], [beta] 89.94[degrees], V 265.2 [[Angstrom].sup.3], Z 2, a:b:c = 2.3691:1:0.9492. Morphology: {100}, {010}, {201}, {[bar.2]01}; less common forms are {610}, {101}, {[bar.1]01}. Twinning: micro-twinning about [010]. X-ray powder diffraction data: 3.389 (84) (011), 3.249 (45) (111, 11[bar.1]), 3.043 (40) (310), 2.926 (55) (211, 21[bar.1]), 2.458 (100) (020), 2.335 (48) (002). Optical data: Biaxial (+), [alpha] 1.698, [beta] 1.700, [gamma] 1.705, 2V(meas.) 70[degrees], 2V(calc.) 65[degrees]; dispersion not observed; nonpleochroic; X ^ a = 6[degrees], Y ^ c 5.5[degrees], Z = b. Chemical analytical data: Means of four sets of electron microprobe data (BeO by atomic emission); BaO 47.66, BeO 14.90, Si[O.sub.2] 36.38, Total 98.94 wt.%. Empirical formula: [Ba.sub.1.03][Be.sub.1.97][Si.sub.2.00][O.sub.7.00]. Relationship to other species: It is the monoclinic dimorph of barylite (orthorhombic).

Name: For the relationship to barylite. Comments: IMA No. 2002-015.

CHUKANOV, N. V., PEKOV, I. V., RASTSVETAEVA, R. K., CHILOV, G. V., and ZADOV, A. E. (2003). Clinobarylite, Ba[Be.sub.2][Si.sub.2][O.sub.7], a new mineral from Khibiny massif, Kola Peninsula. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 132, 29-37.

Diversilite-(Ce)

Trigonal

[Na.sub.2](Ba,K)[.sub.6][Ce.sup.2+][Ti.sub.3][[Si.sub.3][O.sub.9]][.sub.3][Si[O.sub.3]OH][.sub.3](OH,[H.sub.2]O)[.sub.9]

Locality: Mt. Yukspor, Khibiny alkaline massif, Kola Peninsula, Russia.

Occurrence: In a strongly mineralized rischorrite-ijolite-urtite pegmatite. Associated minerals are: nepheline, sodalite, potassium feldspar, natrolite, pectolite, aegirine, shcherbakovite, lamprophyllite, magnesium astrophyllite, delindeite, wadeite, umbite and kostylevite.

General appearance: A fan-shaped intergrowth (2 to 3 mm) of subhedral platy crystals (1 to 2 mm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent to translucent. Color: yellowish orange. Streak: white. Luminescence: nonfluorescent. Hardness: 5. Tenacity: brittle. Cleavage: not observed. Fracture: conchoidal. Density: 3.68 g/[cm.sup.3] (meas.), 3.75 g/[cm.sup.3] (calc.). Crystallography: Trigonal, R[bar.3], a 10.713, c 60.67 [Angstrom], V 6030 [[Angstrom].sup.3], Z 6, c:a = 5.6632. Morphology: {001}. Twinning: none observed. X-ray powder diffraction data: 10.12 (27) (006), 3.236 (100) (1.1.15), 3.094 (21) (300), 2.654 (38) (223), 2.642 (44) (3.0.12), 2.234 (19) (2.2.15), 2.026 (61) (0.0.30). Optical data: Uniaxial (+), [omega] 1.705, [epsilon] 1.708, pleochroism strong, O = pale yellow, E = yellowish orange. Chemical analytical data: Means of three sets of electron microprobe data: [Na.sub.2]O 2.76, [K.sub.2]O 5.81, CaO 0.10, MnO 1.09, FeO 3.10, SrO 0.42, BaO 24.85, [La.sub.2][O.sub.3] 4.84, [Ce.sub.2][O.sub.3] 6.72, [Pr.sub.2][O.sub.3] 0.74, [Nd.sub.2][O.sub.3] 1.21, [Sm.sub.2][O.sub.3] 0.16, Si[O.sub.2] 32.46, Ti[O.sub.2] 9.17, [Nb.sub.2][O.sub.5] 1.62, [H.sub.2]O 6.15, Total 101.20 wt.%. Empirical formula: [Na.sub.2.00]([Ba.sub.3.64][K.sub.2.77])[.sub.[SIGMA]6.41]([Ce.sub.0.92][La.sub.0.67][Nd.sub.0.16][Pr.sub.0.10][Sm.sub.0.02][Mn.sub.0.16][Sr.sub.0.09][Ca.sub.0.04])[.sub.[SIGMA]2.16]([Fe.sub.0.97][Mn.sub.0.03])[.sub.[SIGMA]1.00]([Ti.sub.2.58][Nb.sub.0.27][Mn.sub.0.15])[.sub.[SIGMA]3.00][Si.sub.12.12][O.sub.36.36][(OH)[.sub.7.97]([H.sub.2]O)[.sub.3.67])[.sub.[SIGMA]11.64]. The crystallochemical formula is [Na.sub.2](Ba,K)[.sub.6][Ce.sub.2]Fe[Ti.sub.3][[Si.sub.3][O.sub.9]][.sub.3][Si[O.sub.3]OH][.sub.3](OH,[H.sub.2]O)[.sub.9]. Relationship to other species: It is chemically similar to ilimaussite-(Ce) and joaquinite-(Ce).

Name: From the Latin diversus (heterogeneous) and silicate reflecting its main structural features and its composition. Comments: IMA No. 2002-043.

KHOMYAKOV, A. P., NECHELYUSTOV, G. N., RASTSVETAEVA, R. K., and MA ZHESHENG (2003) Diversilite-(Ce), [Na.sub.2](Ba,K)[.sub.6][Ce.sub.2][Fe.sup.2+][Ti.sub.3][[Si.sub.3][O.sub.9]][.sub.3][Si[O.sub.3]OH][.sub.3](OH,[H.sub.2]O)[.sub.9], a new silicate with heterogeneous tetrahedral complexes from the Khibina alkaline massif, Kola Peninsula, Russia. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 132(5), 34-39.

Eveslogite

Monoclinic

(Ca,K,Na,Sr,Ba)[.sub.48][(Ti,Nb,Fe,Mn)[.sub.12](OH)[.sub.12][Si.sub.48][O.sub.144]](F,OH,CI)[.sub.14]

Locality: Mt. Eveslogchorr, Khibiny alkaline massif, Kola Peninsula, Russia.

Occurrence: As a monomineralic veinlet cross-cutting poikilitic nepheline syenite. Associated minerals are: nepheline, potassium feldspar, biotite, shcherbakovite, astrophyllite, fluorapatite.

General appearance: Subparallel intergrowths of fine-fibrous crystals (up to 0.005 mm thick and 5 cm long); aggregates 10 to 15 cm across.

Physical, chemical and crystallographic properties: Luster: silky. Diaphaneity: translucent. Color: light brown, yellow. Streak: white. Luminescence: nonfluorescent. Hardness: 5. Tenacity: brittle. Cleavage: {001} perfect (mica-like), {010} good. Fracture: splintery or fibrous. Density: 2.85 g/[cm.sup.3] (meas.), 2.91 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, P2/m (?), a 14.069, b 24.937, c 44.31 [Angstrom], [gamma] 95.02[degrees], V 15.486 [[Angstrom].sup.3], Z 4, a:b:c = 0.5642:1:1.7769. Morphology: {001}, flattened on {001} and elongated along [100]. Twinning: none observed. X-ray powder diffraction data: 12.33 (51) (020), 6.199 (42) (040), 3.127 (65) ([bar.4]26), 3.110 (52) ([bar.3]64), 2.990 (59) (2.3.12), 2.940 (45) ([bar.2].4.12), 2.835 (100) (428). Optical data: Biaxial (-), [alpha] 1.631, [beta] 1.641, [gamma] 1.647, 2V(meas.) 82[degrees], 2V(calc.) 75[degrees]; dispersion not observed; pleochroism marked, X colorless, Y and Z yellow, Z <Y> X; X < a, Y ^ c = 5[degrees] in obtuse angle [beta], Z = b (the authors give X < a, Y = c, Z ^ b = 5[degrees] in obtuse angle [gamma], but this is not possible in a monoclinic crystal). Chemical analytical data: Wet chemical analysis gave: [Na.sub.2]O 4.59, [K.sub.2]O 8.53, [Rb.sub.2]O 0.20, CaO 18.60, SrO 2.75, BaO 2.84, MnO 1.00, FeO 0.88, [Al.sub.2][O.sub.3] 0.32, [Fe.sub.2][O.sub.3] 0.23, Ti[O.sub.2] 6.52, Zr[O.sub.2] 0.35, [Nb.sub.2][O.sub.5] 6.56, [Ta.sub.2][O.sub.5] 0.25, Si[O.sub.2] 41.96, [H.sub.2]O 2.85, F 2.72, Cl 0.42, sum 101.57, less O=F+Cl 1.24, Total 100.33 wt.%. Empirical formula: ([Ca.sub.22.46][K.sub.12.27][Na.sub.10.03][Sr.sub.1.80][Ba.sub.1.25])[.sub.[SIGMA]47.81]([Ti.sub.5.53][Nb.sub.3.34][Mn.sub.0.95][Fe.sub.0.83.sup.2+][Fe.sub.0.20.sup.3+][Zr.sub.0.19][Rb.sub.0.14][Ta.sub.0.08])[.sub.[SIGMA]11.26](OH)[.sub.12.00]([Si.sub.47.30][Al.sub.0.43])[.sub.[SIGMA]47.73][[O.sub.138.08](OH)[.sub.9.42][F.sub.9.70][Cl.sub.0.80]][.sub.[SIGMA]158.00]. Relationship to other species: It is a mixed-layered titanosilicate with an astrophyllite-like structure.

Name: For the locality. Comments: IMA No. 2001-023A.

MENSHIKOV, Yu. P., KHOMYAKOV, A. P., FERRARIS, G., BELLUSO, E., GULA, A., and KULCHITSKAYA, E. A. (2003) Eveslogite, (Ca,K,Na,Sr,Ba)[.sub.48][(Ti,Nb,Fe,Mn)[.sub.12](OH)[.sub.12][Si.sub.48][O.sub.144]](F,OH,Cl)[.sub.14], a new mineral from the Khibiny alkaline massif, Kola Peninsula, Russia. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 132, 59-67.

Ferrohogbomite-2N2S

Hexagonal

([Fe.sub.3.sup.2+]ZnMgAl)[.sub.[SIGMA]6]([Al.sub.14][Fe.sup.3+][Ti.sup.4+])[.sub.[SIGMA]16][O.sub.30](OH)[.sub.2]

Locality: Ain Taiba, at the northwestern edge of Grand Erg Oriental, Sahara Desert, Algeria (Lat. 30[degrees] 16.44' N, Long. 5[degrees]48.94' E. 227 m above sea level). The mineral also has been found at the following localities: Lusaka, Zambia; Strangways Range, central Australia; Benson mine, Adirondack Mountains, New York, USA; Prince Olav Coast, east Antarctica.

Occurrence: At the type locality (Ain Taiba) the mineral was found in an isolated rock. Associated minerals are: hematite, ilmenite, pseudorutile, magnetite and hercynite.

General appearance: Euhedral grains up to 0.3 mm along grain boundaries and in fissures within ilmenite, pseudorutile and hematite. Some grains are closely associated with hercynite.

Physical, chemical and crystallographic properties: Luster: adamantine. Diaphaneity: translucent. Color: reddish brown. Streak: brownish. Luminescence: nonfluorescent. Hardness: 6 to 7. Tenacity: brittle. Cleavage: {001} pronounced. Fracture: conchoidal. Density: could not be measured because the mineral is intergrown with other minerals, 4.04 g/[cm.sup.3] (calc.). Crystallography: Hexagonal, P[6.sub.3]mc, a 5.712, c 18.317 [Angstrom], V 517.6 [[Angstrom].sup.3], Z 1, c:a = 3.2068. Morphology: no forms were observed. Twinning: By merohedry with the inversion center as the twinning operation. X-ray powder diffraction data: 2.867 (38) (110), 2.608 (66) (016), 2.433 (91) (114), 2.058 (34) (025), 1.601 (60) (126, 003), 1.557 (35) (034), 1.478 (78) (0.2.10), 1.434 (100) (220). See COMMENTS. Optical data: Uniaxial (-), indices of refraction could not be measured (material of similar composition has [omega] 1.852, [epsilon] 1.827), pleochroic from orange-brown to yellow. Chemical analytical data: Means of 32 sets of electron microprobe data ([Fe.sub.2][O.sub.3] and FeO calculated from total FeO to give charge balance; [H.sub.2]O calculated to give 2H): MgO 3.27, CaO 0.02, MnO 0.25, FeO 16.35, NiO 0.05, ZnO 5.88, [Al.sub.2][O.sub.3] 59.28, [Cr.sub.2][O.sub.3] 0.09, [Fe.sub.2][O.sub.3] 8.05, [Ga.sub.2][O.sub.3] 0.25, Si[O.sub.2] 0.04, Ti[O.sub.2] 5.04, Sn[O.sub.2] 0.38, [H.sub.2]O (1.42), Total (100.37) wt.%. Empirical formula: ([Fe.sub.2.91.sup.2+][Zn.sub.0.93][Mg.sub.1.04][Mn.sub.0.05][Ni.sub.0.01][Al.sub.1.06])[.sub.[SIGMA]6.00]([Al.sub.13.84][Fe.sub.1.29.sup.3+][Ti.sub.0.81][Ga.sub.0.03][Sn.sub.0.03][Cr.sub.0.02.sup.3+][Si.sub.0.01])[.sub.[SIGMA]16.03][O.sub.28.98](OH)[.sub.2.02]. Relationship to other species: It is the [Fe.sup.2+]-dominant, -2N2S polysome of the hogbomite group.

Name: Given in compliance with the approved nomenclature of the hogbomite group. This mineral formerly was known as "hogbomite-8H." Comments: IMA No. 2001-048. The X-ray powder diffraction data were calculated and compare very well with data measured for material of similar composition.

HEJNIY, C., GNOS, E., GROBETY, B., and ARMBRUSTER, T. (2002) Crystal chemistry of the polysome ferrohogbomite-2N2S, a long-known but newly defined mineral species. European Journal of Mineralogy 14, 957-967.

Ferrokentbrooksite

Trigonal

[Na.sub.15][Ca.sub.6](Fe,Mn)[.sub.3][Zr.sub.3]Nb[Si.sub.25][O.sub.73](O,OH,[H.sub.2]O)[.sub.3](Cl,F,OH)[.sub.2]

Locality: Poudrette Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. The mineral also has been found at the following localities: Narssarssuk Pegmatite, Igaliko alkaline complex, southwestern Greenland; Langesundfjord area, Norway (at Bronnebukta, Siktesoya; Barkevik Strand; and the Bjorndalen quarry, Tvedalen); Kariasen, Sandefjord area, Norway; the Burpala alkaline complex, Baikal area, Russia.

Occurrence: It is a primary but late-stage phase found in a small pegmatite dike in nepheline syenite. Associated minerals are: microcline, nepheline (partially altered to natrolite), fluorite, natrolite, gonnardite, rhodochrosite, aegirine, albite, calcite, serandite, ancylite-(Ce) and catapleiite.

General appearance: Pseudo-octahedral crystals up to 1 cm in diameter, but much larger crystals and masses have been found in other dikes.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: reddish brown to red. Streak: white. Luminescence: nonfluorescent in ultraviolet light. Hardness: 5 to 6. Tenacity: brittle. Cleavage: none. Fracture: uneven to conchoidal. Density: 3.06 g/[cm.sup.3] (meas.), 3.06 g/[cm.sup.3] (calc.). Crystallography: Trigonal, R3m, a 14.2099, c 30.067 [Angstrom], V 5257.7 [[Angstrom].sup.3], Z 3, c:a = 2.1159. Morphology: {001}, {101} and {012} are dominant; {021} and {110} are minor. Twinning: none mentioned. X-ray powder diffraction data: 7.104 (38) (110), 5.694 (50) (202), 4.300 (43) (205), 3.955 (31) (214), 3.391 (51) (131), 3.207 (31) (208), 3.155 (31) (217), 2.968 (100) (315), 2.847 (98) (404), 1.776 (31) (440). Optical data: Uniaxial (-), [omega] 1.6221, [epsilon] 1.6186, nonpleochroic. Chemical analytical data: Means of two sets of electron microprobe data: [Na.sub.2]O 11.96, [K.sub.2]O 0.44, CaO 7.99, MnO 3.88, FeO 5.08, SrO 0.45, [Al.sub.2][O.sub.3] 0.11, [Y.sub.2][O.sub.3] 0.58, [La.sub.2][O.sub.3] 1.51, [Ce.sub.2][O.sub.3] 2.51, [Nd.sub.2][O.sub.3] 0.53, [Sm.sub.2][O.sub.3] 0.11, [Gd.sub.2][O.sub.3] 0.17, Si[O.sub.2] 44.70, Ti[O.sub.2] 0.09, Zr[O.sub.2] 11.20, Hf[O.sub.2] 0.17, [Nb.sub.2][O.sub.5] 2.51, [Ta.sub.2][O.sub.5] 0.16, [H.sub.2]O 0.35, F 0.40, Cl 0.93, sum 95.83, less O = F + Cl 0.38, Total 95.45 wt.%. Empirical formula (based on 77.47 anions determined in the crystal structure with [H.sub.2]O calculated by stoichiometry): ([Ma.sub.13.05]RE[E.sub.0.99][K.sub.0.32][Ca.sub.0.23][Sr.sub.0.15])[.sub.[SIGMA]14.74]([Ca.sub.4.59][Mn.sub.1.24][Y.sub.0.17])[.sub.[SIGMA]6.00]([Fe.sub.2.39][Mn.sub.0.61])[.sub.[SIGMA]3.00]([Zr.sub.3.00][Ti.sub.0.04][Hf.sub.0.03])[.sub.[SIGMA]3.07]([Nb.sub.0.64][Si.sub.0.23][Zr.sub.0.07][Ta.sub.0.02])[.sub.[SIGMA]0.96]([Si.sub.24.93][Al.sub.0.07])[.sub.[SIGMA]25.00][O.sub.73.00](O,OH,[H.sub.2]O)[.sub.[SIGMA]2.47][[Cl.sub.0.89][F.sub.0.71](OH)[.sub.0.40]][.sub.[SIGMA]2.00]. Relationship to other species: It is a member of the eudialyte group, specifically the [Fe.sup.2+]-dominant analogue of kentbrooksite, [Na.sub.15][Ca.sub.6][Mn.sub.3][Zr.sub.3]Nb[Si.sub.25][O.sub.74][F.sub.2].

Name: For the relationship to kentbrooksite. Comments: IMA No. 1999-046. The crystal structure has been solved.

JOHNSEN, O., GRICE, J. D., and GAULT, R. A. (2003) Ferrokentbrooksite, a new member of the eudialyte group from Mont Saint-Hilaire, Quebec, Canada. Canadian Mineralogist 41, 55-60.

Ferrosaponite

Monoclinic

[Ca.sub.0.3]([Fe.sup.2+],Mg,[Fe.sup.3+])[.sub.3](Si,Al)[.sub.4][O.sub.10](OH)[.sub.2]*4[H.sub.2]O

Locality: Levoberezhye Iceland spar deposit, Nizhnyaya Tunguska River, Evenkiya, Siberia, Russia.

Occurrence: A hydrothermal mineral related to basalt pillow lavas. Associated minerals are: calcite, pyrite, chalcedony, mordenite, heulandite-Ca and stilbite-Ca.

General appearance: Spherulites up to 2 mm in diameter in transparent calcite.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: translucent. Color: dark green. Streak: green. Luminescence: nonfluorescent. Hardness: 2. Tenacity: sectile. Cleavage: {001} perfect. Fracture: uneven. Density: 2.49 g/[cm.sup.3] (meas.), 2.39 g/[cm.sup.3] (calc.) see COMMENTS. Crystallography: Monoclinic, space group unknown but probably a C-cell see COMMENTS, a 5.365, b 9.337, c 14.65 [Angstrom], [beta] 94.9[degrees], V 731 [[Angstrom].sup.3], Z 2, a:b:c = 0.5746:1:1.5690. Morphology: no forms were mentioned. Twinning: none observed. X-ray powder diffraction data: 7.37 (90) (002), 4.72 (90) (020), 3.80 (80) (112), 3.03 (100) (031), 2.585 (90) (201), 2.429 (90) (006), 1.549 (90) (060). Optical data: Biaxial (-), [alpha] 1.282 see COMMENTS, [beta] 1.641, [gamma] 1.642, 2V(meas.) 5[degrees], dispersion not observed; pleochroic brown, Z > Y; X < c. Chemical analytical data: Means of five sets of electron microprobe data (with [H.sub.2]O by TGA): [Na.sub.2]O 0.21, [K.sub.2]O 0.07, MgO 6.62, CaO 3.31, FeO 21.23, [Al.sub.2][O.sub.3] 9.95, [Fe.sub.2][O.sub.3] 8.78, Si[O.sub.2] 33.15, [H.sub.2]O 17.92, Total 101.24 wt.%. Empirical formula: ([Ca.sub.0.31][Na.sub.0.04][K.sub.0.01])[.sub.[SIGMA]0.36]([Fe.sub.1.54.sup.2+][M.sub.0.85][Fe.sub.0.45.sup.3+])[.sub.[SIGMA]2.84]([Si.sub.2.87][Al.sub.1.01][Fe.sub.0.12.sup.3+])[.sub.[SIGMA]4.00][O.sub.9.67](OH)[.sub.2.33]*4.00[H.sub.2]O. Relationship to other species: It is a member of the smectite group, specifically the [Fe.sup.2+]-dominant analogue of saponite.

Name: For the relationship to saponite. Comments: IMA No. 2002-028. There are some inconsistencies in this description: (1) the authors give the calculated density as 2.435 g/[cm.sup.3], using the given unit cell and chemical data a value of 2.39 g/[cm.sup.3] is calculated; (2) The authors state that the unit cell probably is P-centered but by analogy with saponite it should be C-centered; (3) the [alpha] index of refraction is given as 1.448 and stated to have been calculated by the Gladstone-Dale relationship but no explanation of how this was done is given, the value [alpha] 1.282 was calculated here from [beta], [gamma] and 2V.

CHUKANOV, N. V., PEKOV, I. V., ZADOV, A. E., CHUKANOVA, V. N., and MOKKEL, S. (2003) Ferrosaponite [Ca.sub.0.3]([Fe.sup.2+], Mg,[Fe.sup.3+])[.sub.3](Si,Al)[.sub.4][O.sub.10](OH)[.sub.2]*4[H.sub.2]O, the new trioctahedral smectite. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 132, 68-74.

Galgenbergite-(Ce)

Triclinic

Ca(REE)[.sub.2](C[O.sub.3])[.sub.4]*[H.sub.2]O

Locality: The railroad tunnel Galgenberg, Jassing, between Leoben and St. Michael, Styria, Austria (Lat. 47[degrees]20'48" N, Long. 15[degrees]2'19" E, altitude 570 m above sea level).

Occurrence: In small fissures of an albite-chlorite schist. Associated minerals are: calcite, siderite, pyrite and kaolinite.

General appearance: Rosette aggregates about 1 mm in diameter composed of idiomorphic crystals about 0.6 mm long.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent to translucent. Color: colorless to white. Streak: white. Luminescence: nonfluorescent. Hardness: not determined due to small size of crystals. Tenacity: brittle. Cleavage: {001} perfect. Fracture: splintery. Density: could not be measured, 3.99 g/[cm.sup.3] (calc.). Crystallography: Triclinic, P[bar.1], a 6.388, b 6.386, c 12.388 [Angstrom], [alpha] 96.54[degrees], [beta] 100.85[degrees], [gamma] 100.51[degrees], V 482.2 [[Angstrom].sup.3], Z 2, a:b:c = 1.0003:1:1.9399. Morphology: {001}, {101}, {010}, tabular on {001}. Twinning: none observed. X-ray powder diffraction data: 5.901 (59) (0[bar.1]1), 5.049 (100) (101), 4.695 (38) (0[bar.1]2), 4.468 (38) (1[bar.1]1), 3.899 (49) ([bar.1]12), 3.229 (33) ([bar.11]3), 3.125 (45) (0[bar.2]1), 3.0051 (65) (004). Optical data: Biaxial (-), [alpha] 1.635, [beta] 1.725, [gamma] 1.750, 2V(calc.) 53[degrees]; dispersion not measurable; nonpleochroic; X ^ a = 119[degrees], Y ^ a = 46[degrees], Z ^ a = 121[degrees]; X ^ b = 62[degrees], Y ^ b = 120[degrees], Z ^ b = 137[degrees]; X ^ c = 37[degrees], Y ^ c = 59[degrees], Z ^ c = 73[degrees]. Chemical analytical data: Means of six sets of electron microprobe data ([H.sub.2]O and C[O.sub.2] calculated here to give 1[H.sub.2]O and 4C[O.sub.3] as indicated by the crystal structure determination): CaO 9.22, [Ce.sub.2][O.sub.3] 28.11, [La.sub.2][O.sub.3] 11.36, [Nd.sub.2][O.sub.3] 11.52, [Pr.sub.2][O.sub.3] 3.38, C[O.sub.2] (29.13), [H.sub.2]O (2.98), Total (95.70) wt.%. Empirical formula: [Ca.sub.0.99]([Ce.sub.1.04][La.sub.0.42][Nd.sub.0.41][Pr.sub.0.12])[.sub.[SIGMA]1.99](C[O.sub.3])[.sub.4.00] 1.00[H.sub.2]O. Relationship to other species: It is chemically similar to various Ca-REE-carbonates, but the structure is different.

Name: For the locality. Comments: IMA No. 1997-036. Only an extended abstract of this description has been published (see below), but Prof. Dr. Franz Walter (Universitat Graz) kindly supplied additional information. The crystal structure has been solved.

HOLLERER, C. E. (1998) Ca(REE)[.sub.2](C[O.sub.3])[.sub.4]*[H.sub.2]O, ein neues Mineral aus der Steiermark, Osterreich. Mitteilungen der Osterreichische Mineralogischen Gessellschaft 143, 200-201. WALTER, F. (2003) personal communication.

Ganterite

Monoclinic

[[Ba.sub.0.5](Na,K)[.sub.0.5]][Al.sub.2]([Si.sub.2.5][Al.sub.1.5][O.sub.10])(OH)[.sub.2]

Locality: The Berisal Complex, Wasenhorn, Simplon Region, Switzerland.

Occurrence: In schists associated with muscovite, quartz, epidote group minerals, zircon and apatite. Also in zoisite-celsian gneiss associated with margarite and quartz.

General appearance: Average grain size 0.5 X 0.15 X 0.01 mm.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: presumably transparent. Color: light grey to silver. Streak: white. Luminescence: nonfluorescent, but shows very strong general fluorescence under a green argon laser (514.5 nm). Hardness: VH[N.sub.100] 260 kg/[mm.sup.2], corresponding to Mohs 4 to 4 1/2. Tenacity: flexible. Cleavage: {001} perfect. Fracture: laminated. Density: 3.11 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/c, a 5.212, b 9.046, c 19.978 [Angstrom], [beta] 95[degrees] 48', V 937.6 [[Angstrom].sup.3], Z 4, a:b:c = 0.5762:1:2.2085. Morphology: no forms were observed. Twinning: none mentioned. X-ray powder diffraction data: 4.481 (71) (110), 3.887 (76) ([bar.1]13), 3.737 (77) (023), 3.495 (71) ([bar.1]14), 2.602 (95) (130, [bar.1]31), 2.571 (100) (202, 131), 1.5054 (91) (060, 2.0.10). Optical data: Biaxial (-), [alpha] 1.600 (calc.), [beta] 1.619, [gamma] 1.622, 2V(meas.) 42.5[degrees], dispersion not given; nonpleochroic; orientation not given. Chemical analytical data: Means of 32 sets of electron microprobe data gave: [Na.sub.2]O 1.91, [K.sub.2]O 3.02, MgO 0.86, CaO 0.03, MnO 0.03, FeO 0.69, BaO 15.54, [Al.sub.2][O.sub.3] 36.5, Si[O.sub.2] 37.47, Ti[O.sub.2] 0.73, [H.sub.2]O 3.90, Total 100.68 wt.%. Empirical formula: ([Ba.sub.0.44][K.sub.0.28][Na.sub.0.27])[.sub.[SIGMA]0.99]([Al.sub.1.84][Mg.sub.0.09][Fe.sub.0.04][Ti.sub.0.04])[.sub.[SIGMA]2.01][([Si.sub.2.72][Al.sub.1.28])[.sub.[SIGMA]4.00][O.sub.10.11]](OH)[.sub.1.89].

Relationship to other species: It is the Ba- and Al-dominant member of the mica group.

Name: For the Gantertal, a famous valley in the region in which the mineral was found. Comments: IMA No. 2000-033.

GRAESER, S., HETHERINGTON, C. J., and GIERE, R. (2003) Ganterite, a new barium-dominant analogue of muscovite from the Berisal Complex, Simplon Region, Switzerland. Canadian Mineralogist 41, 1271-1280.

Gjerdingenite-Fe

Monoclinic

[K.sub.2][([H.sub.2]O)[.sub.2](Fe,Mn)][(Nb,Ti)[.sub.4]([Si.sub.4][O.sub.12])[.sub.2](OH,O)[.sub.4]*4[H.sub.2]O

Locality: Gjerdingselva, Lunner, Oppland, Norway.

Occurrence: In miarolitic cavities in ekerite, a sodic granite. Associated minerals are: quartz, orthoclase, albite, aegirine, kupletskite, elpidite, lorenzenite, pyrochlore, monazite-(Ce), gagarinite-(Y), ralstonite, gearksutite and molybdenite.

General appearance: Prismatic to lath-shaped crystals up to 1 mm long and subparallel or irregular aggregates to 3 mm.

Physical, chemical and crystallographic properties: Luster: vitreous to waxy. Diaphaneity: translucent to rarely transparent. Color: pale yellow to orange yellow to brownish yellow. Streak: white to faint yellow. Luminescence: nonfluorescent. Hardness: about 5. Tenacity: very brittle. Cleavage: none observed. Fracture: uneven. Density: 2.82 g/[cm.sup.3] (meas.), 2.83 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/m, a 14.529, b 13.943, c 7.837 [Angstrom], [beta] 117.61[degrees], V 1406.8 [[Angstrom].sup.3], Z 2, a:b:c = 1.0420:1:0.5621. Morphology: {100}, {010}, {001}, {201}, {021}; flattened on {001} and elongate along [010], {010} is subordinate or may be lacking. Twinning: present and was used to solve the crystal structure. X-ray powder diffraction data: 6.92 (80) (020, 001), 6.42 (50) (200, [bar.2]01), 4.94 (70) (021), 3.225 (100) ([bar.4]21, 400, 402), 3.114 (67) (041, 022), 2.512 (50) ([bar.4]41, 401, [bar.4]03). Optical data: Biaxial (+), [alpha] 1.6676, [beta] 1.7001, [gamma] 1.794, 2V(meas.) 58.5[degrees], 2V(calc.) 63.7[degrees]; dispersion not observed; nonpleochroic; Y = b. Chemical analytical data: Thirty-nine analyses were carried out by electron microprobe. One such set of data is given here: [Na.sub.2]O 0.68, [K.sub.2]O 6.76, CaO 0.08, MnO 2.97, FeO 3.44, [Al.sub.2][O.sub.3] 0.20, Si[O.sub.2] 36.35, Ti[O.sub.2] 10.14, Zr[O.sub.2] 0.71, [Nb.sub.2][O.sub.5] 23.24, [H.sub.2]O not determined. Total 84.57 wt.%. Crystal-chemical formula (with Si + Al = 16) derived from the structure determination: {[[K.sub.1.20][Na.sub.0.72]([H.sub.2]O)[.sub.2.08]][.sub.[SIGMA]4.00][[K.sub.2.08]([H.sub.2]O)[.sub.1.92]][.sub.[SIGMA]4.00]}[([H.sub.2]O)[.sub.3.40][K.sub.0.56][Ca.sub.0.04]][.sub.[SIGMA]4.00]([Fe.sub.0.95][Mn.sub.0.75][[square].sub.0.30])[.sub.[SIGMA]2.00][Nb.sub.4.30][Ti.sub.3.45][Fe.sub.0.20][Zr.sub.0.05])[.sub.[SIGMA]8.00]([Si.sub.15.90][Al.sub.0.10)[.sub.[SIGMA]16.00][O.sub.48.00][(OH)[.sub.4.16][O.sub.3.84])[.sub.[SIGMA]8.00]*4.00[H.sub.2]O. Relationship to other species: It is a member of the labuntsovite group.

Name: Assigned according to the IMA approved nomenclature for the labuntsovite group. In terms of root names, gjerdingenite is an analogue of kuzmenkoite and has Nb > Ti in the M site whereas kuzmenkoite has Ti > Nb. The dominant cation in the D site is Fe for gjerdingenite so the name is gjerdingenite-Fe. Comments: IMA No. 2001-009.

RAADE, G., FERRARIS, G., GULA, A., and IVALDA, G. (2002) Gjerdingenite-Fe from Norway, a new mineral species in the labuntsovite group: description, crystal structure and twinning. Canadian Mineralogist 40, 1629-1639. CHUKANOV, N. V., PEKOV, I. V., and KHOMYAKOV, A. P. (2002) Recommended nomenclature for labuntsovite-group minerals. European Journal of Mineralogy 14, 165-173.

Glagolevite

Triclinic

Na[Mg.sub.6][[Si.sub.3]Al[O.sub.10]](OH,O)[.sub.8]*[H.sub.2]O

Locality: Kovdor phlogopite quarry, Kovdor massif, Kola Peninsula, Russia.

Occurrence: Associated minerals are: vesuvianite, pectolite, monticellite, diopside, phlogopite, andradite, apatite, magnetite, olivine, calcite.

General appearance: Massive aggregates (up to several cm); platy grains 1 to 15 mm.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: colorless. Streak: white. Luminescence: nonfluorescent. Hardness: 3 to 5. Tenacity: sectile. Cleavage: {001} perfect. Fracture: uneven. Density: 2.66 g/[cm.sup.3] (meas.), 2.73 g/[cm.sup.3] (calc.). Crystallography: Triclinic, C1, a 5.354, b 9.263, c 14.653 [Angstrom], [alpha] 89.86[degrees], [beta] 96.844[degrees], [gamma] 90.03[degrees], V 721.5 [[Angstrom].sup.3], Z 2, a:b:c = 0.5780:1:1.5819. Morphology: {001}, habit tabular on {001}. Twinning: none observed. X-ray powder diffraction data: 7.266 (50) (002), 4.629 (30) (020), 1[bar.1]0, 110), 2.992 (40) (11[bar.4]), 2.597 (60) (131, 20[bar.2], 1[bar.3]1), 2.556 (100) (201, 1[bar.3][bar.2], 13[bar.2]), 2.457 (50) (132, 1[bar.3][bar.2], 13[bar.2]), 2.457 (132, 1[bar.3]2, 20[bar.3]), 1.544 (100) (3[bar.3][bar.1], 33[bar.1], 060). Optical data: Biaxial (+), [alpha] 1.569, [beta](calc.) 1.569, [gamma] 1.571, 2V(meas.) 17[degrees]; dispersion not observed; nonpleochroic; Z < c. Chemical analytical data: Means of four sets of electron microprobe data ([H.sub.2]O by TGA): [Na.sub.2]O 3.94, MgO 37.23, MnO 0.11, FeO 0.38, [Al.sub.2][O.sub.3] 13.36, Si[O.sub.2] 29.24, [H.sub.2]O 14.5, Total 98.76 wt.%. Empirical formula: [Na.sub.0.76]([Mg.sub.5.55][Al.sub.0.49][Fe.sub.0.03][Mn.sub.0.01])[.sub.[SIGMA]6.08][([Si.sub.2.92][Al.sub.1.08])[.sub.[SIGMA]4.00][O.sub.10.00][(OH)[.sub.7.67][O.sub.0.33][.sub.[SIGMA]8.00]*1.00[H.sub.2]O. Relationship to other species: It is chemically related to clinochlore, but is a new structure type.

Name: For A. A. Glagolev (1927-1993), Russian petrographer who worked at Kovdor for many years. Comments: IMA No. 2001-064.

SEREDKIN, M. V., ORGANOVA, N. I., KRIVOVICHEV, S. V., ARMBRUSTER, T., MOISEEV, M. M., CHUKANOV, N. V., CHUKANOVA, V. N., BURNS, P. C., MARSIY, I. M., ZVYAGIN, B. B., KONONKOVA, N. N., and SIVTSOV, A. V. (2003) Glagolevite, Na[Mg.sub.6][[Si.sub.3][Al.sub.10]](OH,O)[.sub.8]*[H.sub.2]O, a new mineral. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 132, 67-75.

Gmelinite-K

Hexagonal

(K,Na,Ca)[.sub.6][[Al.sub.7][Si.sub.17][O.sub.48]]*22[H.sub.2]O

Locality: Mount Alluaiv, Lovozero alkaline massif, Kola Peninsula, Russia.

Occurrence: In cavities within brecciated pegmatite. Associated minerals are: K-feldspar, nepheline, sodalite, cancrinite, amphibole, pyroxene and other minerals.

General appearance: Granular and radial aggregates of columnar to acicular crystals (up to 0.1 X 3 mm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: colorless to brownish. Streak: white. Luminescence: nonfluorescent. Hardness: VH[N.sub.30] 258 kg/[mm.sup.2], Mohs 4. Tenacity: brittle. Cleavage: not observed. Fracture: conchoidal. Density: 2.00 g/[cm.sup.3] (meas.), 2.04 g/[cm.sup.3] (calc.). Crystallography: Hexagonal, P[6.sub.3]/mmc, a 13.696, c 10.203 [Angstrom], V 1657.5 [[Angstrom].sup.3], Z 1, c:a = 0.7450. Morphology: {100}, {101} and {001}. Twinning: none mentioned. X-ray powder diffraction data: 11.9 (80) (010), 5.16 (70) (021, 002), 4.11 (100) (121, 112), 3.27 (70) (130, 013), 2.971 (80) (040), 2.852 (80) (041, 222), 2.719 (100) (123). Optical data: Uniaxial (-), [omega] 1.477, [epsilon] 1.471, nonpleochroic. Chemical analytical data: Means of four sets of electron microprobe data (recalculated to 100.00 wt.%): [Na.sub.2]O 2.63, [K.sub.2]O 7.54, CaO 1.56, [Al.sub.2][O.sub.3] 18.53, Si[O.sub.2] 50.54, [H.sub.2]O 19.20. Total 100.00 wt.%. Empirical formula: ([K.sub.3.25][Na.sub.1.73][Ca.sub.0.57])[.sub.[SIGMA]5.55][([Al.sub.7.39][Si.sub.17.10])[.sub.[SIGMA]24.49][O.sub.48.34]*21.66[H.sub.2]O. Relationship to other species: It is a member of the zeolite group and the K-dominant member of the gmelinite series.

Name: For the relationship to the other members of the gmelinite series. Comments: IMA No. 1999-039.

KHOMYAKOV, A. P., POLEZHAEVA, L. I., and MALINOVSKY, Yu. A. (2001) Gmelinite-K, (K,Na,Ca)[.sub.6][[Al.sub.7][Si.sub.17][O.sub.48]*22[H.sub.2]O, a new zeolite mineral from the Lovozero alkaline massif, Kola Peninsula, Russia. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 130(3), 65-71.

Goldquarryite

Triclinic

Cu[Cd.sub.2][Al.sub.3](P[O.sub.4])[.sub.4][F.sub.2]([H.sub.2]O)[.sub.10]([H.sub.2]O)[.sub.2]

Locality: Gold Quarry mine, 11 km northwest of Carlin, Eureka County, Nevada, USA.

Occurrence: In brecciated and hydrothermally rounded jasperoid fragments lightly cemented by late-stage silicification. Associated minerals are: opal, carbonate-fluorapatite and hewettite.

General appearance: Isolated clusters of radiating crystals and compact parallel aggregates of crystals. Maximum crystal size is 1.5 mm long by 0.1 mm in diameter.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent but aggregates are translucent. Color: very pale blue to blue-gray, masses are blue. Streak: white. Luminescence: nonfluorescent. Hardness: 3 to 4. Tenacity: brittle. Cleavage: none observed. Fracture: irregular. Density: 2.78 g/[cm.sup.3] (meas.), 2.88 g/[cm.sup.3] (calc.). Crystallography: Triclinic, P[bar.1], a 6.787, b 9.082, c 10.113 [Angstrom], [alpha] 101.40[degrees], [beta] 104.27[degrees], [gamma] 102.51[degrees], V 568.7 [[Angstrom].sup.3], Z 1, a:b:c = 0.7473:1:1.1135. Morphology: {010} and {001} dominant, {100} very minor. Twinning: multiple on {001}. X-ray powder diffraction data: 9.433 (100) (001), 4.726 (30) (002), 3.700 (30) (0[bar.2]2), 3.173 (30b) ([bar.1][bar.2]2, [bar.1][bar.1]3, 120, 003), 3.010 (30) ([bar.1]22, [bar.2]12), 2.896 (30) ([bar.2][bar.1]1), 2.820 (50) (022). Optical data: Biaxial (+), [alpha] 1.570, [beta] 1.573, [gamma] 1.578, 2V(meas.) 30[degrees], 2V(calc.) 76[degrees]; dispersion r < v, strong; pleochroic, deep blue parallel to the elongation and very pale blue normal to the elongation; orientation not given. Chemical analytical data: Means of five sets of electron microprobe data (with [H.sub.2]O calculated to give 26 H + F): [K.sub.2]O 0.17, CaO 1.25, NiO 0.23, CuO 5.33, ZnO 0.05, CdO 26.24, [Al.sub.2][O.sub.3] 15.22, [V.sub.2][O.sub.3] 0.05, [P.sub.2][O.sub.5] 28.04, [H.sub.2]O (22.19), F 3.63, sum (102.40), less O = F 1.53, Total (100.87) wt.%. Empirical formula: ([Cu.sub.0.66][Ni.sub.0.03][Zn.sub.0.01])[.sub.[SIGMA]0.70][[square].sub.0.30]][.sub.[SIGMA]1.00]([Cd.sub.2.00][Ca.sub.0.22][K.sub.0.04])[.sub.[SIGMA]2.26]([Al.sub.2.92][V.sub.0.01])[.sub.[SIGMA]2.93](P[O.sub.4])[.sub.3.87][F.sub.1.89]([H.sub.2]O)[.sub.12.06]. Relationship to other species: None apparent.

Name: For the locality. Comments: IMA No. 2001-058.

ROBERTS, A. C., COOPER, M. A., HAWTHORNE, F. C., GAULT, R. A., JENSEN, M. C., and FOORD, E. E. (2003) Goldquarryite, a new Cd-bearing phosphate mineral from the Gold Quarry mine, Eureka County, Nevada. Mineralogical Record 34, 237-240.

Graulichite-(Ce)

Trigonal

Ce[Fe.sub.3.sup.3+](As[O.sub.4])[.sub.2](OH)[.sub.6]

Locality: Hourt, 2 km north of Vielsalm, in the southeastern border region of the Stavelot Massif, Ardennes, Belgium.

Occurrence: In quartzites associated minerals with: arsenopyrite, scorodite, mimetite, pharmacosiderite, barium-pharmacosiderite and goethite.

General appearance: Spherical aggregates 80 to 150 [micro]m in diameter made up of rhombohedral crystals 50 to 80 [micro]m across.

Physical, chemical and crystallographic properties: Luster: resinous. Diaphaneity: transparent. Color: light green to brownish. Streak: not given. Luminescence: nonfluorescent. Hardness: not given. Tenacity: not given. Cleavage: none. Fracture: irregular. Density: greater than 3.9 g/[cm.sup.3], 4.40 g/[cm.sup.3] (calc.). Crystallography: Trigonal, R[bar.3]m, a 7.260, c 16.77 [Angstrom], V 765.5 [[Angstrom].sup.3], Z 3, c:a = 2.3099. Morphology: {102}, {101}. Twinning: none mentioned. X-ray powder diffraction data: 5.906 (25) (101), 3.636 (40) (110), 3.052 (100) (113), 2.792 (30) (006), 2.239 (35) (107), 1.968 (25) (303), 1.817 (35) (220). Optical data: Uniaxial (-), mean n close to 1.97, pleochroism light green to yellowish. Chemical analytical data: Means of 33 sets of electron microprobe data (with [H.sub.2]O calculated to give OH + [H.sub.2]O = 6): CaO 0.03, SrO 0.24, BaO 3.95, PbO 0.07, [Al.sub.2][O.sub.3] 3.09, [Fe.sub.2][O.sub.3] 30.65, [La.sub.2][O.sub.3] 2.26, [Ce.sub.2][O.sub.3] 15.73, [Nd.sub.2][O.sub.3] 2.08, Si[O.sub.2] 0.03, [P.sub.2][O.sub.5] 0.03, [As.sub.2][O.sub.5] 31.20, [H.sub.2]O (8.37), Total (97.79) wt.%. Empirical formula: ([Ce.sub.0.66][Ba.sub.0.18][La.sub.0.10][Nd.sub.0.09][Sr.sub.0.02])[.sub.[SIGMA]1.05]([Fe.sub.2.65.sup.3+][Al.sub.0.42])[.sub.[SIGMA]3.07][([As.sub.1.88][S.sub.0.01][[square].sub.0.11])[.sub.[SIGMA]2.00][O.sub.8.00][(OH)[.sub.5.62]([H.sub.2]O)[.sub.0.40]][.sub.[SIGMA]6.02]. Relationship to other species: It is a member of the crandallite group and the [Fe.sup.3+]-dominant analogue of arsenoflorencite-(Ce), Ce[Al.sub.3](As[O.sub.4])[.sub.2](OH)[.sub.6].

Name: For Jean-Marie Graulich (1920-2001), mining engineer and honorary director of the Geological Survey of Belgium, in recognition of his contribution to the knowledge of the geology of the Stavelot Massif. Comments: IMA No. 2002-001.

HATERT, F., LEFEVRE, P., PASERO, M., and FRANSOLET, A.-M. (2003) Graulichite-(Ce), a new arsenate mineral from the Stavelot Massif, Belgium. European Journal of Mineralogy 15. 733-739.

Greifensteinite

Monoclinic

[Ca.sub.2][Be.sub.4]([Fe.sup.2+],Mn)[.sub.5](P[O.sub.4])[.sub.6](OH)[.sub.4]*6[H.sub.2]O

Locality: Greifenstein, Saxony, Germany.

Occurrence: In a Li-rich granite pegmatite. Associated minerals are: albite, potassic feldspar, roscherite, viitaniemiite, childrenite, quartz, apatite, herderite, elbaite and montmorillonite.

General appearance: Radiated aggregates up to 5 mm.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: dark olive green. Streak: white. Luminescence: nonfluorescent. Hardness: 4 1/2. Tenacity: brittle. Cleavage: {100} good. Fracture: uneven. Density: 2.93 g/[cm.sup.3] (meas.), 2.93 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/c, a 15.903, b 11.885, c 6.677 [Angstrom], [beta] 94.68[degrees], V 1257.8 [[Angstrom].sup.3], Z 2, a:b:c = 1.3381:1:0.5618. Morphology: {100} and {110}, habit prismatic. Twinning: none observed. X-ray powder diffraction data: 9.48 (10) (110), 5.94 (8) (020), 4.82 (6) (310), 3.96 (9) (400), 3.068 (6) (510). 2.982 (7) (202), 2.783 (8) (240), 2.638 (7) (600). Optical data: Biaxial (-), [alpha] 1.624, [beta] 1.634, [gamma] 1.638, 2V(meas.) 80[degrees], 2V(calc.) 64[degrees]; dispersion not observed; pleochroic, X light blue-green, Y light-green, Z brown to green; X = b. Chemical analytical data: Means of five sets of electron microprobe data ([H.sub.2]O by TGA): BeO 9.24, MgO 0.34, CaO 9.98, MnO 5.56, FeO 22.42. [Al.sub.2][O.sub.3] 1.05, [P.sub.2][O.sub.5] 38.36, [H.sub.2]O 13.6. Total 100.55 wt.%. Empirical formula: [Ca.sub.1.96][Be.sub.4.07]([Fe.sub.3.44.sup.2+][Mn.sub.0.86][Al.sub.0.23][Mg.sub.0.09])[.sub.[SIGMA]4.62](P[O.sub.4])[.sub.5.96](OH)[.sub.3.65]*6.50[H.sub.2]O. Relationship to other species: It is the [Fe.sup.2+]-dominant member of the roscherite group.

Name: For the type locality. Comments: IMA No. 2001-044.

CHUKANOV. N. V., MOCKEL, S., RASTSVETAEVA, R. K., and ZADOV, A. E. (2002) Greifensteinite [Ca.sub.2][Be.sub.4]([Fe.sup.2+],Mn)[.sub.5](P[O.sub.4])[.sub.6](OH)[.sub.4]*6[H.sub.2]O--a new mineral from Greifenstein, Saxony. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 131, 47-52.

Gutkovaite-Mn

Monoclinic

Ca[K.sub.2]Mn(Ti,Nb)[.sub.4]([Si.sub.4][O.sub.12])[.sub.2](O,OH)[.sub.4].5[H.sub.2]O

Locality: Maly Mannepakhk, Mt. Khibiny alkaline massif, Kola Peninsula, Russia.

Occurrence: In a pegmatite in nepheline syenite. Associated minerals are: microcline, aegirine, arfvedsonite, nepheline, eudialyte, albite, lorenzenite, loparite, aenigmatite, manganneptunite, murmanite, analcime, natrolite, stilbite, chabazite, kuzmenkoite-Mn, nontronite, and others.

General appearance: Coarse prismatic crystals up to 0.8 mm long.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: translucent to transparent. Color: pale yellowish pink. Streak: white. Luminescence: not mentioned. Hardness: 5. Tenacity: brittle. Cleavage: not observed. Fracture: uneven. Density: 2.83 g/[cm.sup.3] (meas.), 2.80 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, Cm, a 14.30, b 13.889, c 7.760 [Angstrom], [beta] 117.51[degrees], V 1367 [[Angstrom].sup.3], Z 2, a:b:c = 1.0296:1:0.5587. Morphology: no forms were mentioned. Twinning: micro twinning on (001) and ([bar.4]01). X-ray powder diffraction data: 7.0 (7) (020, 001), 6.33 (5) (201, 200), 4.90 (4) (021), 3.22 (9) (42[bar.1], 40[bar.2], 400), 3.05 (10) (022, 24[bar.1], 240), 2.57 (5) (24[bar.2], 241), 2.48 (6) (44[bar.1], 40[bar.3], 401). Optical data: Biaxial (+), [alpha] 1.688, [beta] 1.700, [gamma] 1.805, 2V(meas.) 35[degrees], 2V(calc.) 39[degrees]; dispersion not observed; nonpleochroic; orientation not given. Chemical analytical data: Means of six sets of electron microprobe data: [Na.sub.2]O 0.18, [K.sub.2]O 6.54, MgO 0.17, CaO 4.81, MnO 4.96, FeO 0.61, ZnO 0.13, SrO 0.54, BaO 1.03, [Al.sub.2][O.sub.3] 0.17, Si[O.sub.2] 41.03, Ti[O.sub.2] 24.47, Zr[O.sub.2] 0.08, [Nb.sub.2][O.sub.5] 5.14, [H.sub.2]O 8.67, Total 98.53 wt.%. Empirical formula: ([Ca.sub.1.00][Na.sub.0.07])[.sub.[SIGMA]1.07]([K.sub.1.63][Ba.sub.0.08][Sr.sub.1.06])[.sub.[SIGMA]1.77]([Mn.sub.0.82][Fe.sub.0.10][Mg.sub.0.05][Zn.sub.0.02])[.sub.[SIGMA]0.99]([Ti.sub.3.59][Nb.sub.0.45][Zr.sub.0.01])[.sub.[SIGMA]4.05][([Si.sub.4.00][Al.sub.0.02])[.sub.[SIGMA]4.02][O.sub.12.07]][.sub.2.00][O.sub.2.47](OH)[.sub.1.53]][.sub.[SIGMA]4.00].4.87[H.sub.2]O. Relationship to other species: It is a member of the labuntsovite group with Mn dominant in the D-site. The A-site in this species is divided into two sites: A(I)-site is occupied by Ca and the A(II)-site is vacant; this results in lowering the symmetry from C2/m to Cm.

Name: For N. N. Gutkova (1896-1960?) who intensively studied the Khibiny-Lovozero alkaline complex; the suffix denotes the dominance of Mn in the D-site. Comments: IMA No. 2001-038.

PEKOV, I. V., CHUKANOV, N. V., RASTSVETAEVA, R. K., ZADOV, A. E., and KONONKOVA, N. N. (2002) Gutkovaite-Mn Ca[K.sub.2]Mn(Ti,Nb)[.sub.4]([Si.sub.4][O.sub.12])[.sub.2](O,OH)[.sub.4].5[H.sub.2]O, a new mineral of the labuntsovite group from the Khibiny massif, Kola Peninsula. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 131(2), 51-57. CHUKANOV, N. V., PEKOV, I. V., and KHOMYAKOV, A. P. (2002) Recommended nomenclature for labuntsovite-group minerals. European Journal of Mineralogy 14, 165-173.

Hillite

Triclinic

[Ca.sub.2](Zn,Mg)([PO.sub.4])[.sub.2]*2[H.sub.2]O

Locality: Reaphook Hill, South Australia, Australia.

Occurrence: In a gossan-like mass covering unmetamorphosed, poorly sorted argillaceous siltstones of the Lower Cambrian Parachilna Formation. Associated minerals are: scholzite, tarbuttite, parahopeite, zincian collinsite, switzerite and phosphophyllite.

General appearance: Euhedral, doubly terminated crystals and clusters (up to 50 [micro]m long).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent to translucent. Color: colorless or grey with a greenish or bluish tint. Streak: not given, probably white. Luminescence: greenish-yellow fluorescence in shortwave UV. Hardness: 3 1/2. Tenacity: not given. Cleavage: {010} and {001} perfect. Fracture: not given. Density: 3.16 g/[cm.sup.3] (meas.), 3.16 g/[cm.sup.3] (calc.). Crystallography: Triclinic, P[bar.1], a 5.736, b 6.767, c 5.462 [Angstrom], [alpha] 97.41[degrees], [beta] 108.59[degrees], [gamma] 107.19[degrees], V 186.05 [[Angstrom].sup.3], Z 1, a:b:c = 0.8476:1:0.8072. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 6.24 (34) (010), 3.512 (16) (011, [bar.1][bar.1]1), 3.230 (22) (1[bar.2]0), 3.130 (37) (020), 3.038 (40) (101), 2.690 (100) ([bar.1]21, [bar.1]02), 1.668 (22) ([bar.2][bar.1]3). Optical data: Biaxial (+), [alpha] 1.635, [beta] 1.650, [gamma] 1.667, 2V(calc.) 83[degrees]; dispersion not given; nonpleochroic; orientation not given. Chemical analytical data: Means of fifteen sets of electron microprobe data (with [H.sub.2]O calculated to give 2[H.sub.2]O): [Na.sub.2]O 0.11, MgO 4.34, CaO 30.36, FeO 0.04, ZnO 14.79, [P.sub.2][O.sub.5] 40.85, [H.sub.2]O (10.23), Total (100.72) wt.%. Empirical formula: ([Ca.sub.1.91][Na.sub.0.01])[.sub.[SIGMA]1.92]([Zn.sub.0.64][Mg.sub.0.38])[.sub.[SIGMA]1.02](P[O.sub.4])[.sub.2.03].2.00[H.sub.2]O. Relationship to other species: It is the Ca- and Zn-dominant member of the fairfieldite group.

Name: For Dr. Roderick Hill (1949-), Chief of the Mineral Research Division, CSIRO, Melbourne, Australia, who first described the mineral and recognized it as a potentially new species. Comments: IMA No. 2003-005.

YAKUBOVICH, O.V., MASSA, W., LIFEROVICH, R. P., GAVRILENKO, P. G., BOGDANOVA, A. N., and TUISKU, P. (2003) Hillite, a new member of the fairfieldite group: description and crystal structure. Canadian Mineralogist 41, 981-988.

Hoganite

Monoclinic

Cu(C[H.sub.3]COO)[.sub.2]*[H.sub.2]O

Locality: The Potosi silver-lead-zinc deposit, 2 km northeast of Broken Hill, New South Wales, Australia (Lat. 31[degrees]56' S, Long. 141[degrees]30' E).

Occurrence: In gossan. Associated minerals are: goethite, hematite, quartz, linarite, malachite, azurite, cuprian smithsonite, cerussite and paceite.

General appearance: Isolated prisms (up to 0.6 mm long).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: dark bluish green. Streak: pale blue. Luminescence: nonfluorescent. Hardness: 1 1/2. Tenacity: brittle. Cleavage: could not be observed but {001} perfect and {110} distinct are reported on synthetic material. Fracture: conchoidal. Density: 1.93 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/c, a 13.162, b 8.555, c 13.850 [Angstrom], [beta] 117.08[degrees], V 1388.6 [[Angstrom].sup.3], Z 8, a:b:c = 1.5385:1:1.6189. Morphology: forms observed are similar to those reported for synthetic crystals {10[bar.1]}, {01[bar.1]}, {2[bar.1][bar.1]}, {110} and {1[bar.1][bar.2]}; also reported are synthetic {110} tablets with {001} tablets with {001}, {100} and {20[bar.1]}. Twinning: none observed, but butterfly twins have been reported for synthetic crystals. X-ray powder diffraction data: 6.921 (100) (110), 6.176 (14) (002), 5.872 (9) (200), 5.382 (10) (11[bar.2]), 3.592 (11) (22[bar.1]), 3.532 (28) (202), 2.291 (9) (33[bar.3]), 2.278 (10) (402). The data in the paper are indexed on the alternate setting in space group A2/a to compare with the data in PDF 27-145, but have been changed here for the given cell in space group C2/c. Optical data: Biaxial (+), [alpha] 1.533, [beta] 1.541, [gamma] 1.554, 2V(meas.) 85[degrees], 2V(calc.) 77[degrees]; dispersion r < v, medium; pleochroism strong X = blue, Y = pale bluish, Z = pale bluish green, X > Y > Z; orientation unknown. See Comments. Chemical analytical data: Wet chemical analysis by AAS (Ca, Cu, Mg, Zn, Pb and Fe), CHN analyzer (C and H) and O by difference gave: C 23.85, H 3.95, Cu 31.6, Fe 0.4, O (40.2), Total (100.00) wt.%. Empirical formula: [C.sub.4.01][H.sub.7.90][O.sub.5.07][Cu.sub.1.00][Fe.sub.0.01] or [Cu.sub.1.00](C[H.sub.3]COO)[.sub.2.00]*0.95[H.sub.2]O. Relationship to other species: It is an acetate.

Name: For Graham P. Hogan (1957-) of Broken Hill, New South Wales, Australia, a miner and well-known collector of Broken Hill minerals, who originally recovered the material. Comments: IMA No. 2001-029. Due to the very small amount of natural material, the optical properties were determined from ssynthetic crystals grown from aqueous solutions.

HIBBS, D. E., KOLITSCH, U., LEVERETT, P., SHARPE, J. L., and WILLIAMS, P. A. (2002) Hoganite and paceite, two new acetate minerals from the Potosi mine, Broken Hill, Australia. Mineralogical Magazine 66, 459-464.

Ikranite

Trigonal

(Na,[H.sub.3]O)[.sub.15](Ca,Mn,REE)[.sub.6][Fe.sub.2.sup.3+][Zr.sub.3]([square],Zr)([square]Si)[Si.sub.24][O.sub.66](O,OH,Cl)*n[H.sub.2]O

Locality: Karnasurt Mt., Lovozero alkaline massif, Kola Peninsula, Russia.

Occurrence: In peralkaline pegmatites. Associated minerals are: aegirine, microcline, lorenzenite, nepheline, lamprophyllite, murmanite and arfvedsonite.

General appearance: Grains up to 3 cm.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: brownish yellow. Streak: yellowish white. Luminescence: nonfluorescent. Hardness: 5. Tenacity: brittle. Cleavage: none. Fracture: conchoidal. Density: 2.82 g/[cm.sup.3] (meas.), 2.63 g/[cm.sup.3] (calc.). Crystallography: Trigonal, R3m, a 14.167, c 30.081 [Angstrom], V 5228.5 [[Angstrom].sup.3], Z 3, c:a = 2.1233. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 6.41 (41) (104), 4.30 (91) (205), 4.09 (36) (116), 3.521 (57) (027), 3.205 (44) (208), 2.963 (92) (315), 2.841 (100) (404), 2.588 (37) (039). Optical data: Uniaxial (+), [omega] 1.612, [epsilon] 1.615, pleochroism colorless to yellow, weak. Chemical analytical data: Means of three sets of electron microprobe data: [Na.sub.2]O 7.95, [K.sub.2]O 0.44, CaO 6.29, MnO 3.40, FeO 0.38, SrO 1.61, [Fe.sub.2][O.sub.3] 4.80, [La.sub.2][O.sub.3] 0.62, [Ce.sub.2][O.sub.3] 1.53, [Nd.sub.2][O.sub.3] 0.19, Si[O.sub.2] 48.91, Ti[O.sub.2] 0.37, Zr[O.sub.2] 13.94, Hf[O.sub.2] 0.28, [Nb.sub.2][O.sub.5] 0.28, [H.sub.2]O 7.70, F 0.10, Cl 0.89, sum 99.68, less O = F + Cl 0.24, Total 99.44 wt.%. Empirical formula: [Na.sub.7.12][K.sub.0.26][Ca.sub.3.11][Sr.sub.0.43][Ce.sub.0.26][La.sub.0.11][Nd.sub.0.03][Mn.sub.1.33][Fe.sub.0.15.sup.2+][Fe.sub.1.67.sup.3+][Zr.sub.3.14][Ti.sub.0.13][Hf.sub.0.04][Nb.sub.0.06][Cl.sub.0.70][F.sub.0.15][Si.sub.22.58][H.sub.23.71][O.sub.75.15]. Relationship to other species: It is a member of the eudialyte group.

Name: For the Russian acronym IKRAN (Institut Kristallgrafii Rossiskoy Akadameii Nauky). Comments: IMA No. 2000-010.

CHUKANOV, N. V., PEKOV, I. V., ZADOV, A. E., KOROVUSHKIN, V. V., EKIMENKOVA, I. A., and RASTSVETAEVA, R. K. (2003) Ikranite, (Na,[H.sub.3]O)[.sub.15](Ca,Mn,REE)[.sub.6][Fe.sub.2.sup.3+][Zr.sub.3]([square],Zr)([square]Si)[Si.sub.24][O.sub.66](O,OH,Cl)*n[H.sub.2]O and raslakite, [Na.sub.15][Ca.sub.3][Fe.sub.3](Na,Zr)[.sub.3][Zr.sub.3](Si,Nb)([Si.sub.25][O.sub.73])(OH,[H.sub.2]O)[.sub.3](Cl,OH), the new eudialyte group minerals from Lovozero massif, Kola Peninsula. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 132(5), 22-33.

Karupmollerite-Ca

Monoclinic

(Na,Ca,K)[.sub.2]Ca(Nb,Ti)[.sub.4]([Si.sub.4][O.sub.12])[.sub.2](O,OH)[.sub.4]*7[H.sub.2]O

Locality: In the Mellemelv stream valley, Kangerluarsuk area, Ilimaussaq alkaline complex, South Greenland.

Occurrence: In a naujaite pegmatite. Associated minerals are: aegirine, arfvedsonite, eudialyte, potassic feldspar, sodalite, albite, carbonate-fluorapatite, lueshite, natrolite, and tuperssuatsiaite.

General appearance: Pseudomorphs after rectangular lamellae (up to 2 X 1.5 X 0.1 cm) of epistolite replacing vuonnemite. The pseudomorphs are fine-grained aggregates with minor relics of epistolite.

Physical, chemical and crystallographic properties: Luster: vitreous to dull. Diaphaneity: translucent. Color: white with grayish and pinkish tints. Streak: not given but probably white. Luminescence: not mentioned. Hardness: 5. Tenacity: brittle. Cleavage: parting along the perfect {001} cleavage of the original vuonnemite/epistilite crystals. Fracture: not given. Density: 2.71 g/[cm.sup.3] (meas.), 2.75 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/m, a 14.641, b 14.214, c 7.9148 [Angstrom], [beta] 117.36[degrees], V 1463 [[Angstrom].sup.3], Z 2, a:b:c = 1.0300:1:0.5568. Morphology: no forms were observed; particles about 0.01 mm are irregular, platy. Twinning: none observed. X-ray powder diffraction data: 7.104 (73) (020), 7.026 (100) (001), 6.482 (45) (20[bar.1]), 4.996 (74) (021), 3.253 (38) (42[bar.1]), 3.250 (36) (400), 3.242 (34) (40[bar.2]), 3.171 (56) (041), 3.150 (38) (022). Optical data: Biaxial (+), [alpha] 1.656, [beta] 1.662, [gamma] 1.755, 2V(meas.) 30[degrees], 2V(calc.) 30[degrees]; dispersion not observed: nonpleochroic; orientation not given. Chemical analytical data: Means of twelve sets of electron microprobe data ([H.sub.2]O by TGA): [Na.sub.2]O 2.17, [K.sub.2]O 1.74, CaO 6.00, MnO 0.31, ZnO 0.06, SrO 0.08, BaO 0.28, [Al.sub.2][O.sub.3] 0.25, [Fe.sub.2][O.sub.3] 0.47, Si[O.sub.2] 39.85, Ti[O.sub.2] 8.51, [Nb.sub.2][O.sub.5] 29.92, [H.sub.2]O 11.31, Total 100.95 wt.%. Empirical formula: ([Na.sub.0.84][Ca.sub.0.64][K.sub.0.44][Ba.sub.0.02][Sr.sub.0.01])[.sub.[SIGMA]1.95]([Ca.sub.0.64][Mn.sub.0.05][Zn.sub.0.01])[.sub.[SIGMA]0.70]([Nb.sub.2.70][Ti.sub.1.28][Fe.sub.0.07.sup.3+])[.sub.[SIGMA]4.05]([Si.sub.7.97][Al.sub.0.06])[.sub.[SIGMA]8.03][O.sub.24.09][O.sub.2.75](OH)[.sub.1.25]][.sub.[SIGMA]4.00].6.92[H.sub.2]O. Relationship to other species: It is a member of the labuntsovite group with Ca dominant in the D-site.

Name: For Svend Karup-Moller (1936-), Associate Professor at the Technical University of Denmark; the suffix denotes the dominance of Ca in the D-site. Comments: IMA No. 2001-028. In the table giving the X-ray powder diffraction data, twelve entries have redundant indices; all those with Okl (where l is negative) are equivalent to Okl.

PEKOV, I. V., CHUKANOV, N. V., PETERSEN, O. V., ZADOV, A. E., YAMNOVA, N. A., KABALOV, Y. K., and SCHNEIDER, J. (2002) Karupmollerite-Ca, (Na,Ca,K)[.sub.2]Ca(Nb,Ti)[.sub.4]([Si.sub.4][O.sub.12][.sub.2](O,OH)[.sub.4].7[H.sub.2]O, a new mineral of the labuntsovite group from the Ilimaussaq alkaline complex, South Greenland. Neues Jahrbuch fur Mineralogie, Monatshefte 2002, 433-444. CHUKANOV, N. V., PEKOV, I. V., and KHOMYAKOV, A. P. (2002) Recommended nomenclature for labuntsovite-group minerals. European Journal of Mineralogy 14, 165-173.

Keilite Cubic

(Fe,Mg)S

Localities: The Abee enstatite chondrite meteorite found near Abee, Alberta, Canada (Lat. 53[degrees]50' N, Long. 113[degrees]15' W). The mineral also is present in the following meteorites: Adhi-Kot, Saint-Sauveur, LEW 88180, RKP A80259, LEW 87119, LEW 88714, Y-791790, Y-791811, Y-86760 and Y8404.

Occurrence: Associated minerals are: niningerite, enstatite, kamacite and troilite.

General appearance: Small grains up to several hundred [micro]m across.

Physical, chemical and crystallographic properties: Luster: metallic. Diaphaneity: opaque. Color: not observed. Streak: not observed. Hardness: could not be measured. Tenacity: not determined. Cleavage: not observed. Fracture: not observed. Density: could not be measured, 3.59 to 3.67 g/[cm.sup.3] (calc.). Crystallography: Cubic, Fm3m, a 5.20 [Angstrom], V 140.6 [[Angstrom].sup.3], Z 4. Morphology: no forms were observed. Twinning: none observed. X-ray powder diffraction data: Only two spacings were measured: 2.584 and 1.829 (indexed as 200 and 220, respectively). Calculated spacings and indices are: 2.985 (111), 2.585 (200), 1.828 (220), 1.492 (222), 1.292 (400), 1.156 (420), 1.055 (422), 0.914 (440), 0.862 (600), 0.817 (620), 0.779 (622). Optical data: In reflected light: gray, isotropic. R: (27.2 %) 470nm, (26.7 %) 546nm, (26.4 %) 589nm, (26.3 %) 650nm. Chemical analytical data: Six sets of electron microprobe data are given. The data for the grain which gave the reflectance data above are: Fe 39.57, Mg 10.36, Mn 3.43, Ca 1.86, Cr 1.98, Zn 0.30, Ti 0.09, Ni --, Cu 0.01, S 41.46, Total 99.06 wt.%. Empirical formula: ([Fe.sub.0.55][Mg.sub.0.33][Mn.sub.0.05][Ca.sub.0.04][Cr.sub.0.03])[.sub.[SIGMA]1.00][S.sub.1.00]. Relationship to other species: It is the Fe-dominant analogue of niningerite, (Mg,Fe)S.

Name: For Dr. Klaus Keil (1934-), Hawaii Institute of Geophysics and Planetology, University of Hawaii, Honolulu, Hawaii, USA. Comments: IMA No. 2001-053. Because of the small grain size, many of the usual physical properties could not be determined.

SHIMIZU, M., YOSHIDA, H., and MANDARINO, J. A. (2002) The new mineral species keilite, (Fe,Mg)S, the iron-dominant analogue of niningerite. Canadian Mineralogist 40, 1687-1692.

Kochite

Triclinic

[Na.sub.2](Na,Ca)[.sub.4][Ca.sub.4](Mn,Ca)[.sub.2][Zr.sub.2]([Si.sub.2][O.sub.7])[.sub.4](O,F)[.sub.4][F.sub.4]

Locality: The northern side of Hvide Ryg in the mountain range of Werner Bjerge on the eastern coast of Greenland (Lat. 72[degrees] N. Long. 24[degrees] W).

Occurrence: In a loose block of nepheline syenite between the Sirius Glacier and Hvide Ryg. Associated minerals are: nepheline, alkali-feldspar and lavenite.

General appearance: Lath-shaped to acicular grains in parallel to subparallel aggregates up to 0.3 X 1.0 mm.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: pale brown. Streak: not given. Luminescence: not given. Hardness: 5. Tenacity: brittle. Cleavage: {100} perfect. Fracture: uneven. Density: 3.32 g/[cm.sup.3] (meas.), 3.35 g/[cm.sup.3] (calc.). Crystallography: Triclinic, P[bar.1], a 10.032, b 11.333, c 7.202 [Angstrom], [alpha] 90.192[degrees], [beta] 100.334[degrees], [gamma] 111.551[degrees], V 747.1 [[Angstrom].sup.3], Z 1, a:b:c = 0.8852:1:0.6355. Morphology: no forms were observed, crystals are elongated along [010]. Twinning: none mentioned. X-ray powder diffraction data: 3.951 (3) (120, 2[bar.2]1), 3.028 (6) (211), 2.908 (10) (1[bar.2]2, 2[bar.2][bar.2]), 2.600 (8) (040), 2.462 (2) (3[bar.4]0, 22[bar.2], 122, 4[bar.2]0), 1.868 (6) (4[bar.2]2, 5[bar.2][bar.2], 420), 1.670 (5) (340), 1.554 (2) (5[bar.4]2, 6[bar.4][bar.2]). Optical data: Biaxial (+), [alpha] 1.684, [beta] 1.695, [gamma] 1.718, 2V(meas.) 73[degrees], 2V(calc.) 70[degrees]; dispersion not given; pleochroism weak with X = colorless and Z = pale yellow; X = c, Z ^ [100] ~ 20[degrees]. Chemical analytical data: Means of four sets of electron microprobe data: [Na.sub.2]O 10.33, MgO 0.01, CaO 21.39, MnO 4.92, FeO 1.08, SrO 0.12, [Al.sub.2][O.sub.3] 0.05, [V.sub.2][O.sub.3] 0.03, [Y.sub.2][O.sub.3] 0.39, [La.sub.2][O.sub.3] 0.25, [Ce.sub.2][O.sub.3] 0.57, Si[O.sub.2] 31.55, Ti[O.sub.2] 8.44, Zr[O.sub.2] 12.12, Hf[O.sub.2] 0.09, [Nb.sub.2][O.sub.5] 1.86, [Ta.sub.2][O.sub.5] 0.02, F 6.83, sum 100.05, less O = F 2.88, Total 97.17 wt.%. Empirical formula: ([Na.sub.1.92][Sr.sub.0.02])[.sub.[SIGMA]1.94]([Na.sub.2.77][Ca.sub.1.23])[.sub.[SIGMA]4.00]([Ca.sub.3.52][Na.sub.0.48])[.sub.[SIGMA]4.00]([Mn.sub.1.07][Ca.sub.0.81][Y.sub.0.05][Ce.sub.0.05][La.sub.0.02])[.sub.[SIGMA]2.00]([Zr.sub.1.41][Fe.sub.0.23][Ca.sub.0.35][Hf.sub.0.01])[.sub.[SIGMA]2.00]([Ti.sub.1.64][Nb.sub.0.22][Zr.sub.0.11][Al.sub.0.02][V.sub.0.01][.sub.[SIGMA]2.00]([Si.sub.2][O.sub.7])[.sub.4.07][F.sub.4.00]([O.sub.1.94][F.sub.1.57])[.sub.[SIGMA]3.51]. Relationship to other species: It is a member of the rosenbuschite group.

Name: For Lauge Koch (1892-1964), Danish geologist who made significant contributions to the knowledge of the geology of Greenland and mapped the geology of the type locality of this mineral. Comments: IMA No. 2002-012.

CHRISTIANSEN, C. C., GAULT, R. A., GRICE, J. D., and JOHNSEN, O. (2003) Kochite, a new member of the rosenbuschite group from Werner Bjerge alkaline complex, East Greenland. European Journal of Mineralogy 15, 551-554.

Kozoite-(La)

Orthorhombic

La(C[O.sub.3](OH)

Locality: Mitsukoshi, Hizen-cho, Saga Prefecture, Japan.

Occurrence: In cavities of alkali olivine basalt. Associated minerals are: kozoite-(Nd), lanthanite-(Nd), kimuraite-(Y), lokkaite-(Y), calcite, aragonite and opal (variety, hyalite).

General appearance: Spherical aggregates less than 1 mm in diameter.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: presumably transparent. Color: extremely pale purple to white. Streak: white. Luminescence: nonfluorescent. Hardness: could not be determined. Tenacity: could not be determined. Cleavage: could not be determined. Fracture: not given. Density: could not be determined, 4.16 g/[cm.sup.3] (calc.). Crystallography: Orthorhombic, Pmcn, a 4.986, b 8.513, c 7.227 [Angstrom], V 306.7 [[Angstrom].sup.3], Z 2, a:b:c = 0.5857:1:0.8489. Morphology: no forms were observed. Twinning: none mentioned. X-ray powder diffraction data: 5.54 (32) (011), 4.31 (100) (110, 020), 3.69 (72) (111, 021), 2.93 (57) (121, 102), 2.33 (50) (131), 2.06 (48) (221), 1.994 (35) (212). Optical data: could not be determined, but the abstractor calculated the mean index of refraction from the Gladstone-Dale relationship as 1.730. Chemical analytical data: Means of four sets of electron microprobe data with (C[O.sub.2] and [H.sub.2]O calculated): CaO 6.30, SrO 1.36, [La.sub.2][O.sub.3] 35.55, [Ce.sub.2][O.sub.3] 0.00, [Pr.sub.2][O.sub.3] 4.68, [Nd.sub.2][O.sub.3] 17.60, [Sm.sub.2][O.sub.3] 1.15, [Eu.sub.2][O.sub.3] 0.00, [Gd.sub.2][O.sub.3] 1.49, [Tb.sub.2][O.sub.3] 0.00, [Dy.sub.2][O.sub.3] 0.09, [Er.sub.2][O.sub.3] 0.04, [Y.sub.2][O.sub.3] 3.88, C[O.sub.2] (23.17), [H.sub.2]O (5.87), Total (101.19) wt.%. Empirical formula: ([La.sub.0.41][Ca.sub.0.21][Nd.sub.0.20][Y.sub.0.07][Pr.sub.0.05][Sr.sub.0.02][Gd.sub.0.02][Sm.sub.0.01])[.sub.[SIGMA]0.99](C[O.sub.3])[.sub.1.00][(OH)[.sub.0.74]([H.sub.2]O)[.sub.0.25]][.sub.0.99]. Relationship to other species: It is a member of the ancylite group, specifically the La-dominant analogue of kozoite-(Nd).

Name: For the relationship with kozoite-(Nd). Comments: IMA No. 2002-054.

MIYAWAKI, R., MATSUBARA, S., YOKOYAMA, K., IWANO, S., HAMASAKI, K., and YUKINORI, I. (2003) Kozoite-(La), La(C[O.sub.3])(OH), a new mineral from Mitsukoshi, Hizen-cho, Saga Prefecture, Japan. Journal of Mineralogical and Petrological Sciences 98, 137-141.

Kristiansenite

Triclinic

[Ca.sub.2]ScSn([Si.sub.2][O.sub.7])([Si.sub.2][O.sub.6]OH)

Locality: The Heftetjern pegmatite, Tordal area, Telemark, Norway.

Occurrence: In a granite pegmatite. Closely associated minerals are: quartz, albite, apatite and stilpnomelane. Other associated minerals are: scandiobabingtonite, scandian ixiolite, hingganite-(Y), cerian epidote, titanite, plumbomicrolite and other microlite minerals, bazzite, milarite cassiterite and two unidentified tantalum minerals (rynersonite? and tantite?).

General appearance: Tapering crystals rarely up to 2 mm long and a massive aggregate nearly 2 mm across.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: translucent to transparent. Color: colorless, white or slightly yellowish. Streak: white. Luminescence: nonfluorescent. Hardness: 5 1/2 to 6. Tenacity: brittle. Cleavage: {001} inferred from preferred orientation in the X-ray powder diffraction pattern. Fracture: uneven. Density: could not be measured but sinks in di-iodmethane (3.3 g/[cm.sup.3] (meas.), 3.64 g/[cm.sup.3] (calc.). Crystallography: Triclinic, Cl, a 10.028, b 8.408, c 13.339 [Angstrom], [alpha] 90.01[degrees], [beta] 109.10[degrees], [gamma] 90.00[degrees], V 1062.7 [[Angstrom].sup.3], Z 4, a:b:c = 1.1927:1:1.5865. Morphology: no forms could be measured but {010} is present. Twinning: polysynthetic on {010} with twin striations. X-ray powder diffraction data: 5.18 (53) (1[bar.1]1), 3.898 (12) ([bar.1][bar.1]3), 3.146 (100) (004), 3.089 (63) ([bar.2]22), 2.901 (19) (221), 2.595 (34) (222), 2.142 (17) ([bar.3][bar.3]1), 1.433 (12) (137). Optical data: Because of intensive twinning no optical data could be determined except for a mean index of refraction of 1.74. Chemical analytical data: Forty-nine sets of electron microprobe data were measured from several grains in three laboratories. The means of eleven sets of electron microprobe data ([H.sub.2]O by difference) for the grain used for the crystal structure study are: [Na.sub.2]O 0.41, [K.sub.2]O 0.06, CaO 18.45, [Al.sub.2][O.sub.3] 0.35, [Sc.sub.2][O.sub.3] 8.11, [Fe.sub.2][O.sub.3] 1.98, Si[O.sub.2] 40.76, Ti[O.sub.2] 0.08, Zr[O.sub.2] 0.43, Sn[O.sub.2] 27.33, [H.sub.2]O (2.04), Total (100.00) wt.%. Empirical formula: ([Ca.sub.0.96][Na.sub.0.04])[.sub.[SIGMA]1.00]([Sn.sub.0.53][Sc.sub.0.34][Fe.sub.0.07][Al.sub.0.02][Zr.sub.0.01)[.sub.[SIGMA]0.97][Si.sub.1.98][[O.sub.6.34](OH)[.sub.0.66]][.sub.[SIGMA]7.00]. Taking into consideration the crystal structure data, the ideal formula is [Ca.sub.2]ScSn([Si.sub.2][O.sub.7])([Si.sub.2][O.sub.6]OH). Relationship to other species: None apparent.

Name: For Mr. Roy Kristiansen (1943-), a well-known amateur mineralogist from Norway who first noticed the new mineral and (with K. Eldjarn, A. Haugen and H. V. Ellingsen) provided samples for the study. Comments: IMA No. 2000-051. Note that the crystal structure has been solved.

RAADE, G., FERRARIS, G., GULA, A., IVALDI, G., and BERNHARD, F. (2002) Kristiansenite, a new calcium-scandiumtin sorosilicate from granite pegmatite in Tordal, Telemark, Norway. Mineralogy and Petrology 75, 89-99.

Kukharenkoite-(La)

Monoclinic

[Ba.sub.2](La,Ce)(C[O.sub.3])[.sub.3]F

Locality: Kirovsky mine, Kukisvumchorr Mt., Khibiny massif, Kola Peninsula, Russia.

Occurrence: In late hydrothermal assemblages in cavities of two pegmatites. In the Hilairitovoye pegmatite, holotype material is associated with: microcline, albite, calcite, nenadkevichite, hilairite, catapleiite, strontianite, donnayite-(Y), synchysite-(Ce), pyrite, etc.; in a pectolite-aegirine-microcline vein other associated minerals are: natrolite, calcite, neodymian ewaldite, etc.

General appearance: Flattened prismatic to needle-like crystals up to 0.5 mm long.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: colorless, white, pale green. Streak: white. Luminescence: nonfluorescent. Hardness: about 4. Tenacity: brittle. Cleavage: not observed. Fracture: uneven. Density: could not be measured, 4.60 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, P[2.sub.1]/m, a 13.396, b 5.111, c 6.672 [Angstrom], [beta] 106.628[degrees], V 437.7 [[Angstrom].sup.3], Z 2, a:b:c = 2.6210:1:1.3054. Morphology: {010}, {[bar.2]01}, {100} and {001}. Twinning: rotation about [100] forming trillings. X-ray powder diffraction data: 4.01 (100) (11[bar.1], 201), 3.27 (100) (310, 40[bar.1], 20[bar.2]), 2.54 (50) (020, 112), 2.14 (80) (221, 51[bar.2], 600), 1.998 (80) (42[bar.1], 22[bar.2], 511, 31[bar.3]), 1.370 (20) (910, 42[bar.4], 712, 71[bar.4]). Optical data: Biaxial (-), [alpha] 1.581, [beta] 1.715, [gamma] 1.715, 2V(meas.) 5[degrees], 2V(calc.) 0[degrees]: dispersion not observed; nonpleochroic; X ^ a = 9[degrees] in acute angle [beta], Y = b, Z ^ c = 26[degrees] in obtuse angle [beta]; the drawing of the optical orientation given in the paper does not appear to be correct. Chemical analytical data: Means of nine sets of electron microprobe data (with C[O.sub.2] calculated to give 3C[O.sub.3] (actually, 2.97): [Na.sub.2]O 0.23, [K.sub.2]O 0.27, CaO 0.99, SrO 2.38, BaO 44.10, [La.sub.2][O.sub.3] 11.18, [Ce.sub.2][O.sub.3] 5.36, [Pr.sub.2][O.sub.3] 0.87, [Nd.sub.2][O.sub.3] 0.76, C[O.sub.2] (21.30), Th[O.sub.2] 9.41, F 3.38, sum (100.23), less O = F 1.42, Total (98.81) wt.%. Empirical formula: ([Ba.sub.1.76][Sr.sub.0.14][K.sub.0.04])[.sub.[SIGMA]1.94]([La.sub.0.42][Th.sub.0.22][Ce.sub.0.20][Ca.sub.0.11][Na.sub.0.05][Pr.sub.0.03][Nd.sub.0.03])[.sub.[SIGMA]1.06](C[O.sub.3])[.sub.2.97][F.sub.1.09]. Relationship to other species: It is the La-dominant analogue of kukharenkoite-(Ce).

Name: For the relationship to kukharenkoite-(Ce). Comments: IMA No. 2002-019. The empirical formula derived here differs slightly from that given in the paper.

PEKOV, I. V., CHUKANOV, N. V., KONONKOVA, N. N., ZADOV, A. E., and KRIVOVICHEV, S. V. (2003) Kukharenkoite-(La), [Ba.sub.2](La,Ce)(C[O.sub.3])[.sub.3]F, a new mineral from Khibiny Massif, Kola Peninsula. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 132(3), 55-64.

Kupcikite

Monoclinic

[Cu.sub.3.4][Fe.sub.0.6][Bi.sub.5][S.sub.10]

Locality: In orebodies K7 and K8 of the Felbertal scheelite deposit, Tauern Window of the Alps, Austria.

Occurrence: Associated minerals are: quartz, chalcopyrite, pyrrhotite, molybdenite, sphalerite, bismuth, makovickyite, cupromakovickyite, hodrushite, cuprobismutite and derivatives of the bismuthinite-aikinite series.

General appearance: Elongate aggregates up to 0.5 mm.

Physical, chemical and crystallographic properties: Luster: metallic. Diaphaneity: opaque. Color: grey. Streak: not given, but presumably grey. Hardness: VH[N.sub.50] 192 kg/[mm.sup.2], corresponding to about 3 1/2 Mohs. Tenacity: brittle. Cleavage: not observed. Fracture: uneven. Density: could not be measured, 6.42 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/m, a 17.512, b 3.9103, c 12.869 [Angstrom], [beta] 108.56[degrees], V 835.4 [[Angstrom].sup.3], Z2, a:b:c = 4.4784:1:3.2911. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 6.028 (4) (201), 3.596 (7) (401), 3.213 (4) ([bar.2]04), 3.128 (10) (112), 3.071 (7) ([bar.3]12), 2.683 (5) (113). Optical data: In reflected light: greyish white, anisotropism moderate in air and strong in oil, bireflectance perceptible in air and moderate in oil, pleochroism weak in air white with bluish tints and enhanced in oil. [R.sub.1] & [R.sub.2] in air: (33.55, 40.56 %) 470nm, (33.92, 41.14 %) 546nm, (34.16, 41.35 %) 589nm, (34.20, 41.32 %) 650nm. Chemical analytical data: Means of six sets of electron microprobe data: Cu 13.22, Ag 0.04, Cd 0.14, Pb 0.09, Fe 2.09, Sb 0.08, Bi 64.64, S 19.94, Total 100.24 wt.%. Empirical formula: ([Cu.sub.3.35][Fe.sub.0.60])[.sub.[SIGMA]3.95]([Bi.sub.4.98][Cd.sub.0.02][Sb.sub.0.01][Pb.sub.0.01][Ag.sub.0.01])[.sub.[SIGMA]5.03][S.sub.10.02]. Relationship to other species: Closely structurally related to cuprobismutite and hodrushite.

Name: For Professor Vladimir Kupcik (1934-1990) of the University of Bratislava and the University of Gottingen for his outstanding contributions to the crystal chemistry of sulfosalts. Comments: IMA No. 2001-017. The crystal structure has been solved.

TOPA, D., MAKOVICKY, E., BALIC-ZUNIC, T., and PAAR, W. H. (2002) Kupcikite, [Cu.sub.3.4][Fe.sub.0.6][Bi.sub.5][S.sub.10], a new Cu-Bi sulfosalt from Felbertal, Austria, and its crystal structure. Canadian Mineralogist 41, 1155-1166.

Kurgantaite

Triclinic

CaSr([B.sub.3][O.sub.9])Cl*[H.sub.2]O

Localities: Inder borate deposit, Kazakhstan. Also from the Chelkar borate deposit, Kazakhstan and the Nepskoe potassium deposit, Siberia, Russia.

Occurrence: Associated minerals are: sylvite, halite, boracite, anhydrite, magnesite and quartz.

General appearance: Fine-grained nodules up to 4 cm across, spherulites up to 0.7 mm in diameter (made up of individual crystals with pyramidal or wedge-shaped terminations) and poorly formed triangular plates up to 0.5 mm.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: colorless to white. Streak: white. Luminescence: probably nonfluorescent. Hardness: 6 to 6 1/2. Tenacity: brittle. Cleavage: given as medium for two unspecified directions. Fracture: uneven. Density: 2.99 g/[cm.sup.3] (meas.), 3.04 g/[cm.sup.3] (calc.). Crystallography: Triclinic, P1, a 6.573, b 6.445, c 6.369 [Angstrom], [alpha] 60.995[degrees], [beta] 61.257[degrees], [gamma] 77.191[degrees], V 206.9 [[Angstrom].sup.3], Z 1, a:b:c = 1.0199:1:0.9882. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 5.69 (8) (010), 3.22 (9) (112, 1[bar.1][bar.1], 201), 3.13 (7) (01[bar.1], 121), 2.92 (10) (200), 2.84 (9) (020), 2.79 (8) (122), 2.14 (7) (312, 20[bar.1]), 2.07 (7) (113). Optical data: Biaxial (+). [alpha] 1.637, [beta] 1.638, [gamma] 1.675, 2V(meas.) < 10[degrees], 2V(calc.) 19[degrees], dispersion not given; nonpleochroic; orientation not given. Chemical analytical data: Seven sets of electron microprobe data are given. One set from Inder material consists of the following: CaO 14.69, SrO 26.43, [B.sub.2][O.sub.3] 45.31, [H.sub.2]O 4.69, Cl 9.58, sum 100.70, less O = Cl 2.17, Total 98.53 wt.%. Empirical formula: [Ca.sub.1.01][Sr.sub.0.98]([B.sub.5.00][O.sub.8.96])[Cl.sub.1.04]*1.00[H.sub.2]O. Relationship to other species: Related to hilgardite, [Ca.sub.2]([B.sub.5][O.sub.9])Cl*[H.sub.2]O.

Name: For the type locality. Comments: The mineral was originally described by Yarzhemskiy in 1952 but was discredited by von Hodenberg and Kuhn in 1982 as "strontium hilgardite." Dr. Igor Pekov kindly assisted with this abstract.

PEKOV, I. V., LOVSKAYA, E. V., CHUKANOV, N. V., ZADOV, A. E., APPOLONOV, V. N., PUSHCHAROVSKY, D. YU., FERRO, O., and VINOGRADOVA, S. A. (2001) Kurgantaite CaSr[[B.sub.5][O.sub.9]]Cl*[H.sub.2]O: revalidation of the mineral species and new data. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 130(3), 71-79.

Kuzmenkoite-Zn

Monoclinic

[K.sub.2]Zn(Ti,Nb)[.sub.4](S[I.sub.4][O.sub.12])[.sub.2](OH,O)[.sub.4]*6-8[H.sub.2]O

Localities: (1) Kedykverpakhk Mt., Lovozero massif, Kola Peninsula, Russia. (2) Lepkhe-Nelm Mt., Lovozero massif, Kola Peninsula, Russia. (3) Karnasurt Mt., Lovozero massif, Kola Peninsula, Russia.

Occurrence: In alkaline pegmatites. (1) Associated with natrolite, microcline, albite, aegirine, nepheline, arfvedsonite, sodalite, eudialyte, lorenzenite and others. (2) Associated with microcline, aegirine, nepheline, magnesioarfvedsonite, eudialyte, lorenzenite, lamprophyllite, catapleiite, titanite, vinogradovite, tundrite-(Ce), apatite, neptunite, other labuntsovite group minerals and others. (3) Associated with natrolite, microcline, albite, aegirine, nepheline, arfvedsonite, sodalite, eudialyte, organovaite, beryllite, rancieite, elpidite, strontiopyrochlore, catapleiite, yofortierite, mangan-neptunite, nontronite and others.

General appearance: (1) Pseudomorphs after murmanite. (2) Coarse prismatic crystals (up to 7 X 0.5 mm). (3) Rough crystals (up to 3 X 0.5 X 0.3 mm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: translucent. Color: pink, pinkish-brown, gray, white. Streak: white. Luminescence: not mentioned. Hardness: ~5. Tenacity: brittle. Cleavage: not observed. Fracture: rough. Density: 2.78 to 2.87 g/[cm.sup.3] (meas.), 2.94 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, Cm, a 14.400, b 13.851, c 7.781 [Angstrom], [beta] 117.33[degrees], V 1379 [[Angstrom].sup.3], Z 2, a:b:c = 1.0396:1:0.5618. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 6.92 (75) (020, 001), 6.40 (60) (20[bar.1], 200), 4.89 (29) (021), 3.19 (100) (42[bar.1], 40[bar.2]), 3.09 (91) (041, 022), 2.58 (35) (241), 2.49 (35) (44[bar.1], 40[bar.3]). Optical data: Biaxial (+), [alpha] 1.680 to 1.683, [beta] 1.686 to 1.688, [gamma] 1.783 to 1.787, 2V(meas.) 25[degrees], 2V(calc.) 28[degrees]; dispersion not mentioned; nonpleochroic; Y = b. Chemical analytical data: Three sets of electron microprobe data are given. The set for material from Kedykverpakhk (with [H.sub.2]O determined by TGA) is: [Na.sub.2]O 0.49, [K.sub.2]O 5.69, MgO 0.03, CaO 2.19, MnO 2.07, FeO 0.54, ZnO 3.73, SrO 0.19, BaO 2.00, [Al.sub.2][O.sub.3] 0.10, Si[O.sub.2] 38.56, Ti[O.sub.2] 17.68, [Nb.sub.2][O.sub.5] 12.54, [H.sub.2]O 13.80, Total 99.61 wt.%. Empirical formula: ([K.sub.1.48][Ca.sub.0.48][Na.sub.0.19][Ba.sub.0.16][Sr.sub.0.02])[.sub.[SIGMA]2.33]([Zn.sub.0.56][Mn.sub.0.36][Fe.sub.0.09][Mg.sub.0.01])[.sub.[SIGMA]1.02]([Ti.sub.2.71][Nb.sub.1.16])[.sub.[SIGMA]3.87][([Si.sub.3.94][Al.sub.0.01])[.sub.[SIGMA]3.95][O.sub.11.85][.sub.2.00][(OH)[.sub.2.19][O.sub.1.81]][.sub.[SIGMA]4.00]*8.30[H.sub.2]O. Relationship to other species: It is a member of the labuntsovite group with Zn dominant in the D-site.

Name: For Maria V. Kuz'menko (1918-1995). Russian geochemist and mineralogist, a specialist in the geochemistry of rare elements who studied the Lovozero massif; the suffix denotes the dominance of Zn in the D-site. Comments: IMA No. 2001-037. The subscripts in the empirical formula given here are quite different from those given by the authors.

CHUKANOV, N. V., PEKOV, I. V., ZADOV, A. E., AZAROVA, YU. V., and SEMENOV, E. I. (2002) Kuzmenkoite-Zn [K.sub.2]Zn(Ti,Nb)[.sub.4](S[I.sub.4][O.sub.12])[.sub.2](OH,O)[.sub.4]*6-8[H.sub.2]O, a new mineral of the labuntsovite group from the Lovozero massif, Kola Peninsula. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 131(2), 45-50. CHUKANOV, N. V., PEKOV, I. V., and KHOMYAKOV, A. P. (2002) Recommended nomenclature for labuntsovite-group minerals. European Journal of Mineralogy 14, 165-173.

Magnesiotantalite

Orthorhombic

(Mg,Fe)(Ta,Nb)[.sub.2][O.sub.6]

Locality: Lipovka pegmatite field, Rezh district, Central Urals, Russia.

Occurrence: Intergrowths of magnesiotantalite, ferrotantalite, ferrocolumbite and uranium-bearing microlite form rims on manganotantalite crystals in andesine-calcite nests in a deeply desilicated granite pegmatite which cross-cuts serpentinite near its contact with marble. Other associated minerals are: dravite-uvite series, chrysoberyl, phlogopite, magnesiohornblende-edenite series, cordierite, phenakite, clinochlore, and others.

General appearance: Flattened irregular grains up to 0.4 mm and segregations up to 0.7 mm.

Physical, chemical and crystallographic properties: Luster: semimetallic to metallic. Diaphaneity: opaque. Color: black. Streak: brown-red. Hardness: VH[N.sub.50] 489 kg/[mm.sup.2], Mohs 5 1/2. Tenacity: brittle. Cleavage: not observed. Fracture: uneven. Density: 6.7 g/[cm.sup.3] (meas.), 6.79 g/[cm.sup.3] (calc.). Crystallography: Orthorhombic, Pbcn, a 14.335, b 5.735, c 5.058 [Angstrom], V 415.8 [[Angstrom].sup.3], Z 4, a:b:c = 2.4996:1:0.8820. Morphology: no forms were observed, flattened on {010}?. Twinning: none observed. X-ray powder diffraction data: 3.67 (60) (310, 111), 2.96 (100) (311), 1.774 (60) O330, 1.746 (50) (602), 1.728 (70) (621), 1.545 (50) (910), 1.462 (90) (911, 332). Optical data: In reflected light: light gray, weak anisotropism, very weak bireflectance, nonpleochroic. [R.sub.max.], [R.sub.min.]:
(15.20, 14.02) 400 nm  (15.18, 13.69) 410 nm  (15.05, 13.49) 420 nm
(14.79, 13.27) 430 nm  (14.53, 12.95) 440 nm  (14.28, 12.76) 450 nm
(13.97, 12.82) 460 nm  (13.75, 12.95) 470 nm  (13.58, 13.05) 480 nm
(13.44, 13.13) 490 nm  (13.33, 13.20) 500 nm  (13.25, 13.22) 510 nm
(13.23, 13.19) 520 nm  (13.25, 13.18) 530 nm  (13.32, 13.20) 540 nm
(13.41, 13.19) 546 nm  (13.47, 13.28) 550 nm  (13.67, 13.45) 560 nm
(13.94, 13.67) 570 nm  (14.25, 13.94) 580 nm  (14.57, 14.24) 589 nm
(14.58, 14.25) 590 nm  (14.90, 14.58) 600 nm  (15.18, 14.90) 610 nm
(15.41, 15.16) 620 nm  (15.56, 15.32) 630 nm  (15.61, 15.31) 640 nm
(15.55, 15.15) 650 nm  (15.41, 14.83) 660 nm  (15.22, 14.48) 670 nm
(15.00, 14.12) 680 nm  (14.88, 13.93) 690 nm  (14.76, 13.76) 700 nm


Chemical analytical data: Means of five sets of electron microprobe data: MgO 5.27, MnO 0.82, FeO 6.71, Ti[O.sub.2] 0.38, [Nb.sub.2][O.sub.5] 24.19, [Ta.sub.2][O.sub.5] 61.86, Total 99.23 wt.%. Empirical formula: ([Mg.sub.0.56][Fe.sub.0.40][Mn.sub.0.05])[.sub.[SIGMA]1.01]([Ta.sub.1.20][Nb.sub.0.78])[.sub.[SIGMA]1.98][O.sub.6.00]. Relationship to other species: It is the Mg- and Ta-dominant member of the columbite group.

Name: For the relationship to ferrotantalite and manganotantalite. Comments: IMA No. 2002-018.

PEKOV, I. V., YAKUBOVICH, O. V., SHCHERBACHEV, D. K., and KONONKOVA, N. N. (2003) Magnesiotantalite, (Mg,Fe)-(Ta,Nb)[.sub.2][O.sub.6], the new columbite-tantalite group mineral from desilicated granite pegmatites of Lipovka (the central Urals) and its genesis. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 132, 49-59.

Magnesiostaurolite

Monoclinic

[[square].sub.4][Mg.sub.4][Al.sub.16]([Al.sub.2][[square].sub.2])[Si.sub.8][O.sub.40][(OH)[.sub.2][O.sub.6]]

Locality: The Dor-Maira massif, especially in the Vallone di Gilba, Val Varaita, Italian Western Alps, Italy.

Occurrence: As inclusions in pyrope megablasts from coesitebearing metamorphic terrane. Associated minerals are: pyrope, talc, clinochlore, kyanite, rutile, magnesiodumortierite, corundum, magnesiochloritoid, ellenbergerite, chlorite.

General appearance: Anhedral isolated grains from a few tens to 250 [micro]m.

Physical, chemical and crystallographic properties: Most of the following properties refer to the mineral in thin-section or are inferred. Luster: probably vitreous to resinous. Diaphaneity: transparent. Color: colorless. Streak: probably white. Luminescence: nonfluorescent. Hardness: probably 7 to 7 1/2. Tenacity: probably brittle. Cleavage: not observed. Fracture: not observed. Density: could not be measured, 3.54 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/m, a 7.8706, b 16.5411, c 5.6323 [Angstrom], [beta] 90.007[degrees], V 733.3 [[Angstrom].sup.3], Z 1, a:b:c = 0.4758:1:0.3405. Morphology: no forms were mentioned. Twinning: none, but a "tweed" texture was observed between crossed nicols. X-ray powder diffraction data: 4.139 (23.6) (040), 3.516 (21.6) (131), 3.001 (20.3) (221), 2.678 (38.0) (151), 2.390 (50.4) (132), 2.370 (32.8) (330), 2.356 (24.0) (311), 1.968 (100.0) (062), 1.511 (23.3) (192), 1.407 (23.0) (004), 1.391 (81.8) (246), 1.377 (21.8) (0.12.0). Optical data: Biaxial (sign unknown), mean n 1.709, 2V(meas.) close to 90[degrees]; nonpleochroic; orientation unknown. Chemical analytical data: Means of three sets of electron microprobe data: [Li.sub.2]O 0.90, MgO 7.77, FeO 0.72, ZnO 0.10, [Al.sub.2][O.sub.3] 57.45, Si[O.sub.2] 30.66, Ti[O.sub.2] 0.18, [H.sub.2]O 2.30, Total 100.08 wt.%. Empirical formula ([[square].sub.3.12][Mg.sub.0.72][Fe.sub.0.16])[.sub.[SIGMA]4.00]([Mg.sub.1.85][Li.sub.0.94][Zn.sub.0.02][[square].sub.1.19])[.sub.[SIGMA]4.00]([Al.sub.15.96][Ti.sub.0.04])[.sub.[SIGMA]16.00]([Al.sub.1.58][Mg.sub.0.45][[square].sub.1.97])[.sub.[SIGMA]4.00]([Si.sub.7.96][Al.sub.0.04])[.sub.[SIGMA]8.00][O.sub.40.04][(OH)[.sub.3.98][O.sub.4.02]][.sub.8.00]. Relationship to other species: It is the Mg-dominant analogue of staurolite and zincostaurolite.

Name: For the relationship to staurolite. Comments: IMA No. 1992-035.

CHOPIN, C., GOFFE, B., UNGARETTI, L., and OBERTI, R. (2003) Magnesiostaurolite and zincostaurolite: mineral description with a petrogenetic and crystal-chemical update. European Journal of Mineralogy 15, 167-176.

Mallestigite

Hexagonal

[Pb.sub.3]Sb(S[O.sub.4])(As[O.sub.4])(OH)[.sub.6]*3[H.sub.2]O

Locality: The dump of a copper-lead-zinc mine, 1 km NW of the Mallestiger Mittagskogel, Westkarawanken, Carinthia, Austria (Lat. 46[degrees]31'45" N, Long. 13[degrees]52'24" E, altitude 1200 m above sea level).

Occurrence: In narrow fractures of limestones where it formed during weathering of primary galena and tetrahedrite. Associated minerals are: anglesite, brochantite, langite, linarite and schultenite.

General appearance: Idiomorphic to hypidiomorphic crystals up to 2 mm long and 0.4 mm thick. Also in radial aggregate up to 3 mm in diameter.

Physical, chemical and crystallographic properties: Luster: adamantine. Diaphaneity: transparent to translucent. Color: colorless. Streak: white. Luminescence: nonfluorescent. Hardness: VH[N.sub.10] 176 kg/[mm.sup.2], Mohs 4. Tenacity: brittle. Cleavage: none. Fracture: splintery. Density: could not be measured, 4.91 g/[cm.sup.3] (calc.). Crystallography: Hexagonal, P[6.sub.3], a 8.938, c 11.098 [Angstrom], V 767.8 [[Angstrom].sup.3], Z 2, c:a = 1.2417. Morphology: {100} and {101}; elongated on [001]. Twinning: none observed. X-ray powder diffraction data: 7.74 (25) (100) 6.35 (44) (101), 3.655 (100) (201), 3.481 (80) (112), 3.175 (31) (202), 2.675 (62) (203), 2.235 (35) (220), 1.741 (24) (224). Optical data: Uniaxial (+), [omega] 1.760, [epsilon] 1.801, nonpleochroic. Chemical analytical data: Means of fourteen sets of electron microprobe data (given as elements and converted here to oxides with [H.sub.2]O calculated to give 12H): PbO 65.67, [Sb.sub.2][O.sub.5] 14.68, [As.sub.2][O.sub.5] 9.71, S[O.sub.3] 8.64, [H.sub.2]O (10.38), Total (1009.08) wt.%. Empirical formula: [Pb.sub.3.06][Sb.sub.0.95][(S[O.sub.4])[.sub.1.12](As[O.sub.4])[.sub.0.88]][.sub.[SIGMA]2.00](OH)[.sub.5.99]*3.01[H.sub.2]O. Relationship to other species: It is the Sb-dominant analogue of fleischerite, [Pb.sub.3][Ge.sup.4+](S[O.sub.4])[.sub.2](OH)[.sub.6]*3[H.sub.2]O.

Name: For the locality. Comments: IMA No. 1996-043. Only an extended abstract of this description has been published (see below), but Prof. Dr. Franz Walter (Universitat Graz) kindly supplied additional information. The crystal structure has been solved.

SIMA, I. (2002) Mallestigite, [Pb.sub.3]Sb(S[O.sub.4])(As[O.sub.4])(OH)[.sub.6]*3[H.sub.2]O, ein neues Mineral von einer Halde des ehemaligen Cu-Pb-Zn-Bergbaues NW des Mallestiger Mittagskogels in den Westkarawanken, Karnten, Osterreich. Mitteilungen der Osterreichische Mineralogischen Gessellschaft 143, 200-201. WALTER, F. (2003) personal communication.

Manganlotharmeyerite

Monoclinic

Ca([Mn.sup.3+],[square],Mg)[.sub.2]{As[O.sub.4],[As[O.sub.2](OH)[.sub.2]]}[.sub.2](OH,[H.sub.2]O)[.sub.2]

Locality: The Starlera Fe-Mn deposit, Val Ferrera, Eastern Alps, Switzerland.

Occurrence: In carbonate-hosted manganese ore. Associated minerals are: calcite, tilasite and sailaufite (in press).

General appearance: Elongate platy crystals and aggregates up to 1 mm long.

Physical, chemical and crystallographic properties: Luster: adamantine. Diaphaneity: transparent to translucent. Color: brown-red to dark reddish orange. Streak: light brown. Luminescence: not given. Hardness: about 3. Tenacity: brittle. Cleavage: {001} distinct. Fracture: irregular. Density: 3.77 g/[cm.sup.3] (meas.), 3.75 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/m, a 9.043, b 6.2314, c 7.3889 [Angstrom], [beta] 116.392[degrees], V 372.99 [[Angstrom].sup.3], Z 2, a:b:c = 1.4512:1:1.1858. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 4.93 (80) (110), 3.182 (100) ([bar.1]12), 2.927 (70) (201), 2.822 (70) (021), 2.718 (80) ([bar.3]11), 2.555 (100) ([bar.2]21, [bar.3]12), 2.134 (70) (202, 221). Optical data: Biaxial (+), [alpha] 1.785, [beta] 1.814, [gamma] 1.854, 2V(meas.) 85[degrees], 2V(calc.) 82[degrees]; dispersion r < v, weak; pleochroism not mentioned; orientation unknown. Chemical analytical data: Means of six sets of electron microprobe data ([H.sub.2]O calculated to give 10 oxygen atoms): [Na.sub.2]O 0.08, MgO 3.95, CaO 12.42, ZnO 0.58, SrO 0.20, NiO 1.07, CoO 0.19, [Al.sub.2][O.sub.3] 0.27, [Fe.sub.2][O.sub.3] 0.91, [Mn.sub.2][O.sub.3] 16.70, [V.sub.2][O.sub.5] 0.67, [As.sub.2][O.sub.5] 53.41, [H.sub.2]O (8.84), Total (99.29) wt.%. Empirical formula: ([Ca.sub.0.94][Sr.sub.0.01][Na.sub.0.01])([Mn.sub.0.45.sup.3+][[square].sub.0.26][Mg.sub.0.20][Ni.sub.0.03][Fe.sub.0.02][Zn.sub.0.02][Al.sub.0.01][Co.sub.0.01])[.sub.2]([As.sub.0.98][V.sub.0.02])[.sub.2][O.sub.10.00][H.sub.4.16]. Relationship to other species: It is the manganese-dominant member of the lotharmeyerite subgroup of the tsumcorite group.

Name: For the relationship to lotharmeyerite. Comments: IMA No. 2001-026. The crystal structure has been solved and is the basis for the given formula.

BRUGGER, J., KRIVOVICHEV, S. V., KOLITSCH, U., MEISSER, N., ANDRUT, M., ANSERMET, S., and BURNS, P. C. (2002) Description and crystal structure of manganlotharmeyerite, Ca([Mn.sup.3+],[square],Mg)[.sub.2]{As[O.sub.4],[As[O.sub.2](OH)[.sub.2]]}[.sub.2](OH,[H.sub.2]O)[.sub.2], from the Starlera Mn deposit, Swiss Alps, and a redefinition of lotharmeyerite. Canadian Mineralogist 40, 1597-1608.

Marecottite

Triclinic

[Mg.sub.3]([H.sub.2]O)[.sub.18][(U[O.sub.2])[.sub.4][O.sub.3](OH)(S[O.sub.4])[.sub.2]]([H.sub.2]O)[.sub.10]

Locality: La Creusaz uranium prospect near Les Marecottes village, Canton Valais, Western Alps, Switzerland.

Occurrence: In hydrothermal breccia veins. Associated minerals are: uraninite, gypsum, rabejacite, johannite and some other new uranium species.

General appearance: Diamond-shaped platelets up to 500 [micro]m long grouped into rosettes.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: yellow-orange. Streak: white. Luminescence: nonfluorescent. Hardness: about 3. Tenacity: very brittle. Cleavage: {011} perfect. Fracture: not given. Density: the mineral sinks in Clerici solution with a density of 4.03 g/[cm.sup.3], 3.86 g/[cm.sup.3] (calc.). Crystallography: Triclinic, P[bar.1], a 10.815, b 11.249, c 13.851 [Angstrom], [alpha] 66.224[degrees], [beta] 72.412[degrees], [gamma]69.955[degrees], V 1422.1 [[Angstrom].sup.3], Z1, a:b:c = 0.9614:1:1.2313. Morphology: {011} is the prominent form. Twinning: results in two twinned individuals with the composition plane corresponding to the long axis of the crystal and perpendicular to {011}. X-ray powder diffraction data: 9.46 (100) (0[bar.1]1), 8.63 (20) (101), 4.73 (80) (022), 3.44 (80) (01[bar.3], 310), 3.39 (70) (321, 0[bar.2]2), 2.88 (30) (303) and several other spacings with intensity 20. Optical data: Biaxial (sign not given), the indices of refraction measured in the (011) face range from 1.735 to 1.750, pleochroism fair from pale-yellow to orange-yellow in the (011) face. Chemical analytical data: Means of eight sets of electron microprobe data (with [H.sub.2]O calculated): MgO 2.03, MnO 1.15, S[O.sub.3] 8.95, U[O.sub.3] 66.36, [H.sub.2]O (14.73), Total (93.22) wt.%. Empirical formula: ([Mg.sub.1.79][Mn.sub.0.58])[.sub.[SIGMA]2.37](U[O.sub.2])[.sub.8.24](S[O.sub.4])[.sub.3.97](OH)[.sub.2.00][O.sub.5.64]*28.02[H.sub.2]O. Relationship to other species: It is related to magnesium-zippeite.

Name: For the locality. Comments: IMA No. 2001-056. The paper gives the species name without an acute accent on the first "e"; it has been corrected here.

BRUGGER, J., BURNS, P. C., and MEISSER, N. (2003) Contributions to the mineralogy of acid drainage of uranium minerals: marecottite and the zippeite-group. American Mineralogist 88, 676-685.

J. A. Mandarino

Chairman Emeritus of the Commission on New Minerals and Mineral Names of the International Mineralogical Association and Curator Emeritus Department of Mineralogy Royal Ontario Museum 100 Queen's Park Toronto, Ontario, Canada M5S 2C6
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Author:Mandarino, J.A.
Publication:The Mineralogical Record
Geographic Code:4EXRU
Date:Jul 1, 2004
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