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ABSTRACTS OF NEW MINERAL DESCRIPTIONS.

Chloromenite Monoclinic

[Cu.sub.9][O.sub.2][(Se[O.sub.3]).sub.4][CI.sub.6]

Locality: The North Breakthrough of the Great Fissure Tolbachik eruption (1975-1976), Kamchatka Peninsula, Russia. The mineral was found in the "new" (1977) fumarole on the west border of the 2nd North Breakthrough slag cone.

Occurrence: In a fumarole (the temperature of the gases in the fumarole in 1977 was about 700[degrees]C). Associated minerals are: melanothallite (on which chloromenite crystals have grown), an unknown selenite, an unknown scaly green mineral, and white weathering products on sophiite.

General appearance: Elongated plates (up to 0.2 mm long).

Physical, chemical and crystallographic properties: Luster: vitreous, but the indices of refraction indicate adamantine. Diaphaneity: transparent. Color: tobacco-green. Streak: yellowish-green. Luminescence: not mentioned. Hardness. [VHN.sub.5] 62 kg/[mm.sup.2]. Tenacity: plastic. Cleavage. {101} perfect. Fracture: not mentioned. Density: could not be determined, 4.14 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, 12/m, a 14.11, b 6.274, c 13.00 A, [beta] 113.0[degrees], V 1059 [A.sup.3], Z 2, a:b:c = 2.2490:1:2.0720. Morphology: well-developed forms are {001}, {101}, {101}, {110}, {011}, and {312}; poorly-developed forms {301} and {310}; the crystals are flattened on {101} and elongated on [111] (see Comments). Twinning: none mentioned. X-ray powder diffraction data: 11.29 (63) (101), 5.56 (83) (011), 3.643 (25) (301), 3.450 (100) (103), 3.239 (39) (204), 3.133 (25) (020), 2.714 (33) (503), 2.486 (61) (303). Optical data: Biaxial (-), [alpha] 1.87, [beta] 1.92, [gamma] 1.94, 2V(meas.) 66[degrees], 2V(cal c.) 63[degrees]; dispersion not mentioned; pleochroism X = green, Y = light brownish-green, Z = black brownish-green, absorption Z [greater than] X [greater than] Y; Y = b, Z [similar to] c [therefore, X [caret] a [similar to] 23[degrees] in obtuse angle [beta] (J.A.M)]. Chemical analytical data: Means of four sets of electron microprobe data: CuO 46.23, ZnO 5.94, [SeO.sub.2] 34.37, CI 16.57, sum 103.11, less O = C1 3.74, Total 99.37 wt.%. Empirical formula: [([Cu.sub.7.71][Zn.sub.0.97]).sub.[sigma]8.68][O.sub.1.47][([SeO.sub. 3]).sub.4.11][CI.sub.6.20]. Relationship to other species: Chloromenite is the third copper oxide chloroselenite; the others, also found in the Tolbachik fumaroles, are georgbokiite (see abstract) and ilinskite (see abstract in Mineral. Rec 29, 236).

Name: For the Greek [SPECIAL CHARACTERS ARE NOT REPRODUCIBLE IN ASCII TEXT] (green and also indicating chlorine) and [SPECIAL CHARACTERS ARE NOT REPRODUCIBLE IN ASCII TEXT] (moon indicating selenium). Comments: IMA No. 96-048. The crystal drawing in the paper, which is a projection on (100), is reproduced here (see A) from information kindly provided by Dr. Krivovichev. A clinographic drawing also is shown here (see B) and, although the crystal appears to be distorted, this is the result of being elongated on the [111] direction.

VERGASOVA, L., KRIVOVICHEV, S., SEMENOVA, T., FILATOV, S., and ANANIEV, V. (1999) Chloromenite, [Cu.sub.9][O.sub.2][([SeO.sub.3]).sub.4]-[CI.sub.6], a new mineral from the Tolbachik volcano, Kamchatka, Russia. European Journal of Mineralogy 11, 119-123.

Ferrorhodsite Cubic

(Fe,Cu)[(Rh,Pt,Ir).sub.2][S.sub.4]

Locality: In gold-platinum placers in the Chadsky and Kondersky dunite massifs, Yakutia-Saha, Russia.

Occurrence: As inclusions in isoferroplatinum in dunite. Other associated minerals are: laurite, osmium, hollingsworthite and unnamed [Rh.sub.2][(Fe,Ni,Cu).sub.4][S.sub.7].

General appearance: Irregular and equant grains (up to 50 x 70 microns).

Physical, chemical and crystallographic properties: Luster: metallic. Diaphaneity: opaque. Color: black. Streak: black. Hardness: [VHN.sub.25] 507 kg/[mm.sub.2]. Tenacity: fragile. Cleavage: none. Fracture: not mentioned. Density: could not be determined, 5.71 g/[cm.sub.3] (calc.). Crystallography: Cubic, Fd3m, a 9.89 A, V 967.4 [A.sup.3], Z 8. Morphology: no forms were observed. Twinning: none mentioned. X-ray powder diffraction data: 5.72 (7) (111), 2.99(10) (311), 2.471 (8) (400), 1.903 (7) (333, 511), 1.750 (9) (440), 1.674 (3) (531), 1.009 (3) (844). Optical data: In reflected light: grey, isotropic. R: (41.5 %) 480nm, (41.8 %) 540nm, (41.8%) 580nm, (41.7%) 640nm. Chemical analytical data: Means of two sets of electron microprobe data: Rh 41.8, Ir 8.31, Pt 4.40, Fe 7.34, Cu 6.88, Ni 0.02, Co 0.02, S 31.0, Total 99.77 wt.%. Empirical formula: [([Fe.sub.0.55][Cu.sub.0.45]).sub.[sigma]1.00-] [([Rh.sub.l.69][Ir.0.18][Pt.sub.0.09]).sub.[sigma]1.96][S.sub.4.03]. Relationship to other species: The iron-domina nt analogue of cuprorhodsite.

Name: For the composition and relationship to cuprorhodsite. Comments: IMA No. 96-047.

RUDASHEVSKY, N. S., MOCHALOV, A. G., MENSHIKOV, YU. P., and SHUMSKAYA, N. I. (1998) Ferrorhodsite (Fe,Cu)[(Rh,Pt,Ir).sub.2][S.sub.4]--a new mineral. Zapiski Vserossiyskogo mineralogicheskogo obshchestva 127(5), 37-41.

Ferrotitanowodginite Monoclinic

[Fe.sup.2+]Ti[Ta.sub.2][O.sub.8]

Locality: In the San Elias and La Viquita pegmatites (about 300 m apart), Sierra de la Estanzuela, departamento Chacabuco, San Luis province, Argentina (approximately at Lat. 32[degrees]51' S, Long. 65[degrees]06' W).

Occurrence: In pegmatites. Associated minerals are: Ti-rich ferrowodginite, albite ("cleavelandite"), quartz, microlite and ferrotapiolite.

General appearance: Submillimetric domains intergrown with ferrowodginite as an aggregate 0.7 x 0.5 cm.

Physical, chemical and crystallographic properties: Luster: submetallic. Diaphaneity: opaque. Color: very dark brown to black. Streak: dark brown. Hardness: Mobs 51/2. Tenacity: brittle. Cleavage: not observed. Fracture: irregular. Density: could not be determined, 7.37 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/c, a 9.403, b 11.384, c 5.075 A, [beta] 90.55[degrees], V 543.24 [A.sup.3], Z 4, a:b:c = 0,8260:1:0.4458. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 3.626 (70) (220), 2.963 (100) (221), 2.939 (90) (221), 2.484 (45) (041), 1.759 (45) (260), 1.715 (50) (402), 1.711(45) (441), 1.447 (40) (262). Optical data: In reflected light: creamy white in air and gray in oil, abundant internal reflections (yellow, orange and purplish orange), distinct anisotropism, moderate bireflectance, moderate pleochroism. [R.sub.max]. & [R.sub.min].: (18.7, 18.2 %) 470nm, (19.1, 18.1 %) 546nm, (17.9, 16.9 %) 589nm, (16.4, 15.6 %) 650nm. Chemical analytical data: Mean s of eighteen sets of electron microprobe data: MgO 0.01, CaO 0.01, MnO 1.05, FeO 10.26, PbO 0.05, [Fe.sub.2][O.sub.3] 2.19, [As.sub.2][O.sub.3] 0.03, [Sb.sub.2][O.sub.3] 0.02, [Bi.sub.2][O.sub.3] 0.03, Ti[O.sub.2] 7.10, [SnO.sub.2] 1.25, Th[O.sub.2] 0.01, [UO.sub.2] 0.02, [Nb.sub.2][O.sub.5] 6.52, [Ta.sub.2][O.sub.5] 70.68, [WO.sub.3] 0.02, Total 99.25 wt.%. Empirical formula: [([[Fe.sup2+].sub.0.087][[Mn.sup.2+].sub.0.09]).sub.[sigma]]0.96] [([Ti.sub.0.54][Ta.sub.0.54][[Fe.sup.3+].sub.0.17]-[Sn.sub.0.05]).sub .[sigma]]1.00][([Ta.sub.1.70][Nb.sub.0.30]).sub.[sigma].200][O.sub.8. 00]. Relationship to other species: The [Fe.sup.2+]- and Ti-dominant member of the wodginite group.

Name: For the composition and relationship to the wodginite group. Comments: IMA No. 98-028.

GALLISKI, M. A., CERNY, P., MARQUEZ-ZAVALIA, M. F., and CHAPMAN, R. (1999) Ferrotitanowodginite, [Fe.sup.2+][TiTa.sub.2][O.sub.8], a new mineral of the wodginite group from the San Elias pegmatite, San Luis, Argentina American Mineralogist 84, 773-777.

Georgbokiite Monoclinic

[Cu.sub.5][O.sub.2][([SeO.sub.3]).sub.2][Cl.sub.2]

Locality: The cone of the South break of the Large Tolbachik fissure eruption (1975-1986), Kamchatka Peninsula, Russia.

Occurrence: A product of fumarolic activity (Temperature 200[degrees]C). Associated minerals are: halite, Al-, Mg- and Na-sulfates, moissanite, native aluminium (probably) and two Se-containing minerals of unknown composition.

General appearance: Euhedral crystals (0.05 to 0.30 mm).

Physical, chemical and crystallographic properties: Luster: very strong vitreous to adamantine. Diaphaneity: translucent. Color: chestnut to dark brown. Streak: yellowish-brown. Luminescence: non-fluorescent. Hardness: [VHN.sub.10] 215 kg/[mm.sup.2]. Tenacity: sectile. Cleavage: {010} very perfect and {100} perfect. Fracture: not mentioned. Density: could not be determined, but grains sink in Clerici solution which has a density of 4.05 g/[cm.sup.3], 4.84 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, [P2.sub.1]/c, a 6.045, b 13.778, c 5.579 A, [beta] 95.76[degrees], V 462.3 [A.sup.3], Z 2, a:b:c = 0.4387:1:0.4049. Morphology: forms observed {100), {010}, {120}, {011}, {021}, {031}, {111}, {121}, (131}, {251}, {141}, {611}, {211}, {533}, {111}, {121}, {252}, {131}, (132}. See Comments. Twinning: none observed. X-ray powder diffraction data: 6.88 (68) (020), 5.511 (50) (110), 2.990 (100) (140), 2.963 (94) (131), 2.566 (67) (221), 2.296 (95) (060). Optical data: Biaxial (-), [alpha] 2.06, [beta] 2.11, [gamma] 2.15, 2V(meas.) 70[degrees], 2V(calc.) 82[degrees]; dispersion not mentioned; pleochroism distinct, X = yellowish-brown, Y = straw-yellow, Z = dark brown, absorption Z [greater than] X [greater than] Y; orientation X [caret] a = 24[degrees] (in obtuse angle [beta]), Y = b, [therefore, Z [caret] c = 18[degrees] (in acute angle [beta])]. Chemical analytical data: Means of thirteen sets of electron microprobe data: CuO 58.17, ZnO 0.22, [SeO.sub.2] 33.09, Cl 10.96, sum 102.44, less O = Cl 2.48, Total 99.96 wt.%. Empirical formula: [([Cu.sub.4.93][Zn.sub.0.02]).sub.[sigma]4.95][O.sub.1.89][([SeO.sub. 3]).sub.2.01][Cl.sub.2.08]. Relationship to other species: A chloroselenite similar in composition to chloromenite.

Name: For Prof. Dr. Georgiy Borisovich Bokii (1909-) for his contributions to crystal chemistry and mineralogy. Comments: IMA No. 96-015. The crystal drawing which is shown here was produced from the data given in the paper and from information kindly provided by Dr. Sergey Krivovichev to whom I am indebted for other information about the mineral. I have changed the Miller indices of some of the forms to equivalent indices for clarity with respect to the indices shown on the drawing. Details of the crystal structure are given in the paper.

VERGASOVA, L. P., SEMENOVA, T. F., FILATOV, S. K., KRIVOVICHEV, S. V., SHUVALOV, R. R., and ANANIEV, V. V. (1999) Georgbokiite [Cu.sub.5][O.sub.2][([SeO.sub.3]).sub.2][Cl.sub.2]--a new mineral from volcanic sublimates. Doklady Akademia Nauk 364(4), 527-531.

Hexaferrum Hexagonal

(Fe,Ru,Os,Ir)

Locality: The Chirynaisky massif, Koryak Mountains, Kamchatka Peninsula, Russia.

Occurrence: In chromite segregations in dunite. Associated minerals are: "iridosmine," "rutheniridium," laurite, tulameenite, awaruite, iron, copper, zinc, oregonite, pentlandite and other sulfides. The obsolete names "iridosmine" and "rutheniridium" probably refer, respectively, to osmium and iridium.

General appearance: Cubic or octahedral (see Comments) crystals (up to 200 microns).

Physical, chemical and crystallographic properties: Luster: metallic. Diaphaneity: opaque. Color: steel gray with a yellow tint. Streak: black. Hardness: [VHN.sub.50] 810 kg/[mm.sup.2]. Tenacity: not mentioned. Cleavage: none. Fracture: not mentioned. Other properties: magnetic. Density: could not be determined, 12.01 g/[cm.sup.3] (calc.) (ruthenian variety). Crystallography: Hexagonal, [P6.sub.3]/mmc, a 2.64, c 4.20 A, V 25.35 [A.sup.3], Z 2, c:a = 1.5909. Morphology: cubes and octahedra are mentioned, but these are not possible in the hexagonal system. Twinning: none mentioned. X-ray powder diffraction data: 2.28 (5) (100), 2.10 (6) (002), 2.006 (10) (101), 1.549 (3) (102), 1.316 (3) (110), 1.195 (3) (103). Optical data: In reflected light: light gray to white, strong anisotropism, no bireflectance or pleochroism. [R.sub.1] & [R.sub.2]: (49.8, 41.9 %) 480nm, (50.6, 42.0 %) 540nm, (51.4, 42.0%) 580nm, (53.4, 43.0 %) 660nm. Chemical analytical data: Means of three sets of electron microprobe data: Fe 29.40, Cu 0.22, Ni 0.09, Co 0.15, Ru 36.90, Os 20.90, Ir 9.01, Pt 0.28, Total 96.95 wt.%. Empirical formula: [([Fe.sub.0.50][Ru.sub.0.35][Os.sub.0.10][Ir.sub.0.04]).sub.[sigma]0. 99]. Relationship to other species: The hexagonal polymorph of iron.

Name: For the symmetry and composition. Comments: IMA No. 95-032. It is unlikely that a mineral with hexagonal symmetry occurs as cubic or octahedral crystals. A total of eleven sets of chemical analytical data are given by the authors. This abstract contains data for only the ruthenian variety. It is unfortunate that the authors use the nonvalid names "hexaferrum (Fe,Ru)," "hexaferrum (Fe,Os)" and "hexaferrum (Fe,Ir)," for the ruthenian-, osmian- and iridian-varieties of hexaferrum.

MOCHALOV, A. G., DMITRENKO, G. G., RUDASHEVSKY, N. S., ZHERNOVSKY, I. V., and BOLDYREVA, M. M. (1998) Hexaferrum (Fe,Ru)), (Fe,Os), (Fe,Ir)--a new mineral. Zapiski Vserossiyskogo mineralogicheskogo obshchestva 127(5), 41-51.

Hydrowoodwardite Trigonal

[Cu.sub.1-x][A1.sub.x][(OH).sub.2][([SO.sub.4]).sub.x/2][([H.sub.2]O) .sub.n]

with x [less than] 0.67 and n [greater than] [approximately equals] 3x/2

Locality: The St. Briccius mine, Konigswalde near Annaberg, Saxony, Germany. Also found at the following localities in Saxony, Germany: the Gelbe Birke mine, Schwarzenberg; the St, Christoph mine, Barenhecke; the St. Johannes mine, Wolkensten, near Marienberg. The mineral is identical with the incompletely described mineral from Carnarvonshire, Wales, UK (Nickel, 1976).

Occurrence: At St. Briccius it occurs on gneiss; no associated minerals are mentioned. The following information is given about the other occurrences: Gelbe Birke associated with woodwardite, schulenbergite, namuwite, brianyoungite, langite, linarite and others; St. Christoph material is a variety containing carbonate; St. Johannes associated with copper-bearing allophane.

General appearance: Botryoidal, porous crusts.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: translucent. Color: blue to pale blue. Streak: pale blue. Luminescence: not mentioned. Hardness: not mentioned. Tenacity: brittle after losing water. Cleavage: not discernible. Fracture: uneven. Density: 2.33 g/[cm.sup.3] (meas.), 2.47 g/[cm.sup.3] (calc.). Crystallography: Trigonal, probably R3m (by analogy with other hydrotalcite-related minerals), a 3.070, c 31.9 A, V 260 [A.sup.3], Z 3, c:a = 10.3909. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 10.5 (100) (003), 5.26 (17) (006), 3.50 (6) (009), 2.60 (5B) (012), 2.46 (2B) (015), 2.23 (2B) (018), 1.524 (4) (110). Optical data: Uniaxial (presumably, sign is unknown), [n.sub.min]. 1.549, [n.sub.max]. 1.565, nonpleochroic. Chemical analytical data: An analysis by ICP-MS with water by TGA gave: [Na.sub.2]O 0.10, CuO 28.39, ZnO 0.41, [A1.sub.2][O.sub.3] 19.20, [SO.sub.3] 15.50, [SiO.sub.2] 5.60, [H.sub.2]O 30.10. Total 99.30 (given as 99.39) wt.%. The empirical formula is given as: [[Cu.sub.0.48][A1.sub.0.51][Zn.sub.0.01][(OH).sub.1.99]]-[[([SO.sub.4 ]).sub.0.26]][([H.sub.2]O).sub.1.27]. Relationship to other species: It is considered to be the copper-dominant analogue of glaucocerinite and carrboydite and a member of the hydrotalcite group.

Name: For the relationship to woodwardite. Comments: IMA No. 96-038.

WITZKE, T. (1999) Hydrowoodwardite, a new mineral of the hydrotalcite group from Konigswalde near Annaberg, Saxony/Germany and other localities. Neues Jahrbuch fur Mineralogie, Monatshefte 1999, 75-86. NICKEL, E. H. (1976) New data on woodwardite. Mineralogical Magazine 43, 644-647.

Isovite Cubic

[(Cr,Fe).sub.23][C.sub.6]

Locality: The Is River, near the town of Is, Isovsky district, Middle Urals, Russia (Lat. 58[degrees]47' N, Long. 59[degrees]48' E).

Occurrence: In a gold-platinum placer. Associated minerals are: gold, platinum-group minerals, cinnabar, "chromspinels" and unnamed Cr-Fe minerals including other carbides.

General appearance: Equant or irregular grains (up to 0.2 mm).

Physical, chemical and crystallographic properties: Luster: metallic. Diaphaneity: opaque. Color: steel gray. Streak: not given. Hardness: [VHN.sub.50] 1350 kg/[mm.sup.2]. Tenacity: brittle. Cleavage: none observed. Fracture: irregular. Other properties: ferromagnetic. Density. could not be determined, 7.00 g/[cm.sup.3] (calc.). Crystallography: Cubic, Fm3m, a 10.65 A, V 1208 [A.sup.3], Z 4. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 2.38 (3) (024), 2.17 (5) (224), 2.05 (10) (333, 115). Optical data: In reflected light: white, isotropic. R: (46.5 %) 470nm, (43.7 %) 546nm, (43.2 %) 589nm, (43.9 %) 650nm. Chemical analytical data: Thirty-six sets of electron microprobe data are listed, some of which are incomplete. One sample gave: Cr 68.24, Fe 25.12, Ni 0.47, Co 0.04, Cu 0.04, Zn 0.02, Al 0.02, Si 0.02, C 6.06, Total 100.03 wt.%. Empirical formula: [([Cr.sub.16.71][Fe.sub.5.73][Ni.sub.0.10][CO.sub.0.01][Si.sub.0.01][ A1.sub.0.01]- [Cu.sub.0.01]).sub.[sigma]22.5 8][C.sub.6.42]. Relationship to other species: The chromium-dominant analogue of haxonite, [(Fe,Ni).sub.23][C.sub.6].

Name: For the locality. Comments: IMA No. 96-039.

GENERALOV, M. E., NAUMOV, V. A., MOKHOV, A. V., and TRUBKIN, N. V. (1998) Isovite [(Cr,Fe).sub.23][C.sub.6]--a new mineral from the gold-platinum bearing placers of the Urals. Zapiski Vserossiyskogo mineralogicheskogo obshchestva 127(5), 26-37.

Seidite-(Ce) Monoclinic

[Na.sub.4][SrCeTiSi.sub.8][O.sub.22]F [5H.sub.2]O

Locality: In the Yubileinaya pegmatite vein at Mt. Kamarsut, northern part of the Lovozero alkaline massif, Kola Peninsula, Russia.

Occurrence: In hyperagpaltic pegmatites. Associated minerals are: natrolite, microcline, steenstrupine-(Ce), belovite-(Ce), vitusite-(Ce), sazhinite-(Ce), leucosphenite, mangan-neptunite, serandite and sphalerite.

General appearance: Radial aggregates (0.5 to 1.0 cm in diameter) of tiny (0.01 to 0.05 mm wide) fibres.

Physical, chemical and crystallographic properties: Luster: vitreous to silky, also waxy or earthy. Diaphaneity. transparent under microscope. Color: light yellow, pink-yellow or cream. Streak: white. Luminescence: non-fluorescent. Hardness: 3 to 4. Tenacity: brittle. Cleavage: {100} perfect and {001} less perfect. Fracture: fibrous and splintery. Density: 2.76 g/[cm.sup.3] (meas.), 2.65 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/c, a 24.74, b 7.186, c 14.47 A, [beta] 95.25[degrees], V 2561.7 [A.sup.3], Z 4, a:b:c = 3.4428:1:2.0136. Morphology: no forms were observed. Twinning: none observed. X-ray powder diffraction data: 12.32 (100) (200), 3.220 (8b) (513), 3.104 (24) (420), 3.081 (16) (800), 3.058 (12b) (421), 2.705 (10) (620). Optical data: Biaxial (-), [alpha] 1.542, [beta] 1.569, [gamma] 1.571, 2V(meas.) 28[degrees], 2V(calc.) 30[degrees]; dispersion none discernible; orientation X [approximately equals] a, Y [approximately equals] c, Z [approximately equals] b. Chemical analytical data: Means of five sets of electron microprobe data ([H.sub.2]O by the Penfield method and F by wet chemistry): [Na.sub.2]O 9.38, [K.sub.2]O 1.20, CaO 1.04, MnO 0.34, FeO 0.10, SrO 5.20, BaO 1.56, [La.sub.2][O.sub.3] 4.62, [Ce.sub.2][O.sub.3] 6.52, [Pr.sub.2][O.sub.3] 0.54, [Nd.sub.2][O.sub.3] 1.60, [Sm.sub.2][O.sub.3] 0.16, [SiO.sub.2] 45.62, [TiO.sub.2] 6.54, [ThO.sub.2] 2.96, [Nb.sub.2][O.sub.5] 0.78, [H.sub.2]O 10.80, F 1.52, sum 100.48, less O = F 0.64, Total 99.84 wt.%. Empirical formula: [[[Na.sub.3.10][Ca.sub.0.19][([H.sub.3]O).sub.0.71]].sub.[sigma]4.00] -[[[Sr.sub.0.51][K.sub.0.26][Ba.sub.0.10][(H.sub.3]O).sub.0.13]].sub. [sigma]1.00]]([Ce.sub.0.41][La.sub.0.29][Th.sub.0.11][Nd.sub.0.10][Pr .sub.0.03][Sm.sub.0.01]).sub.[sigma]0.95]-[([Ti.sub.0.84][Nb.sub.0.06 ][Mn.sub.0.05][Fe.sub.0.01]).sub.[sigma]0.96][Si.sub.7.79][O.sub.21.3 6][[[F.sub.0.82][(OH).sub.0.18]].sub.[sigma]1.00]. 4.80[H.sub.2]O. Relationship to other species: It acts like a zeolite by readily exchanging cations with solutions of various salts.

Name: For Seid Lake in the Lovozero massif. Comments: IMA No. 93-029.

KHOMYAKOV, A. P., FERRARIS, G., BELLUSO, E., BRITVIN, S. N., NECHELYUSTOV, G. N. and SOBOLEVA, S. V. (1998) Seidite-(Ce), [Na.sub.4]SrCeTi[Si.sub.8][O.sub.22]F.5[H.sub.2]O, a new mineral with zeolitic properties. Zapiski Vserossiyskogo mineralogicheskogo obshchestva 127(4), 94-100.

Shibkovite Hexagonal

K[(Ca,Mn,Na).sub.2][([K.sub.2-x][[].sub.x]).sub.2][Zn.sub.3][Si.sub.1 2][O.sub.30]

Locality: In the moraine of Dara-i-Pioz glacier, Garmskiy District, northern Tadjikistan (Lat. 39[degrees]30' N, Long. 70[degrees]40' E).

Occurrence: In a pegmatite boulder. Associated minerals are: quartz, microcline, albite, aegirine, polylithionite, reedmergnerite, sogdianite, pyrochlore, eudialyte, and turkestanite.

General appearance: Grains (0.01 to 0.05 mm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity. transparent to translucent. Color: colorless to white. Streak: white. Luminescence: fluoresces bright red under short wave UV. Hardness: [VHN.sub.50] 609 kg/[mm.sub.2], Mohs 5 1/2 to 6. Tenacity: brittle. Cleavage: none observed. Fracture. step-like. Density: 2.89 g/[cm.sub.3] (meas.), 2.90 g/[cm.sub.3] (calc.). Crystallography: Hexagonal, P6/mmc, a 10.505, c 14.185 A, V 1355.8 [A.sub.3], Z 2, c:a = 1.3503. Morphology: no forms were mentioned. Twinning: none. X-ray powder diffraction data: 7.11 (35) (002), 3.83 (100) (022), 3.345 (60) (121), 3.304 (40) (014), 2.940 (50) (114), 2.795 (85) (024), 2.627 (35) (220). Optical data: Uniaxial (+), [omega] 1.561, [epsilon] 1.563, nonpleochroic. Chemical analytical data: Means of four sets of electron microprobe data: [Na.sub.2]O 1.03, [K.sub.2]O 8.83, CaO 6.00, MnO 2.43, FeO 0.04, ZnO 20.80, [A1.sub.2][O.sub.3] 0.04, Si[O.sub.2] 62.33, Total 100.50 wt.%. Empirical formula: [K.sub.1.00][([Ca.sub.1.26][Mn.sub.0.40][Na.sub.0.39][Fe.sub.0.01]).s ub.[sigma]2.06][([K.sub.1.21][[].sub.0.79]).sub.[sigma]2.00]-[Zn.sub. 3.01][Si.sub.12.01][O.sub.30.00]. Relationship to other species: A member of the Osumilite group.

Name: For Viktor Sergeevitch Shibkov (1926-1992) and Nikolai Viktorvitch Shibkov (1951-1991), prominent Russian geologists. Comments: IMA No. 97-018.

PAUTOV, L. A., AGAKHANOV, A. A., and SOKOLOVA, E. V. (1998) Shibkovite--the new mineral from the milarite group. Zapiski Vserossiyskogo mineralogicheskogo obshchestva 127(4), 89-94.

Simmonsite Monoclinic

[Na.sub.2][LiA1F.sub.6]

Locality: The Zapot amazonite-topaz-zinnwaldite pegmatite, Gillis Range, approximately 25 km northeast of Hawthorne, Mineral Co., Nevada, USA.

Occurrence: In an alumino-fluoride assemblage in a late-stage breccia pipe structure that cuts the pegmatite. Associated minerals are: cryolite, cryolithionite, pachnolite, weberite, thomsenolite, prosopite, ralstonite, and fluorite.

General appearance: An intergrowth with cryolite and cryolithionite of anhedral to subhedral grains from several microns to two- to three-hundred microns.

Physical, chemical and crystallographic properties: Luster: somewhat greasy. Diaphaneity: translucent to transparent in thin section. Color. pale buff to cream. Streak: white. Luminescence: fluoresces moderate yellow orange in shortwave UV. Hardness: 2 1/2 to 3. Tenacity: not extremely brittle. Cleavage: nothing distinct. Fracture: subconchoidal. Density: 3.05 g/[cm.sub.3] (meas.), 3.06 g/[cm.sub.3] (calc.). Crystallography: Monoclinic, [P2.sub.1] or [P2.sub.1]/m, a 7.5006, b 7.474, c 7.503 A, [beta] 90.847[degrees], V 420.6 [A.sub.3], Z 4, a:b:c = 1.0036:1:1.0039. Morphology: no forms were observed. Twinning: complex polysynthetic. X-ray powder diffraction data: 4.33 (100) (111, 111), 2.65 (60) (220, 202, 022), 2.25 (70) (131, 113, 131, 311), 2.18 (40) (222), 1.877 (90) (400, 004). Optical data: Biaxial but nearly isotropic, birefringence 0.0009, n 1.359. Chemical analytical data: Means of seven sets of electron microprobe data: Na 23.4, Li (3.56), A1 13.9, F 58.6, Total 99.46 wt.%. Li was calculated to give one atom. Empirical formula: [Na.sub.1.98][Li.sub.1.00][A1.sub.1.00][F.sub.6.01]. Relationship to other species: None apparent.

Name: For William B. Simmons (1943-), Professor of Mineralogy and Petrology, University of New Orleans, New Orleans, Louisiana, USA. Comments: IMA No. 97-045.

FOORD, E. E., O'CONNOR, J. T., HUGHES, J. M., SUTLEY, S. J., FALSTER, A. U., SOREGAROLI, A. E., LIGHTE, F. E., and KILE, D. E. (1999) Simmonsite, [Na.sub.2][LiA1F.sub.6], a new mineral from the Zapot amazonite-topaz-zinnwaldite pegmatite, Hawthorne, Nevada, U.S.A. American Mineralogist 84, 769-772.

Turkestanite Tetragonal

Th[(Ca,Na).sub.2]([K.sub.1-x][[].sub.x])[Si.sub.8][O.sub.20].n[H.sub. 2]O

Locality: (1) Dara-i-Pioz massif, Garmskiy region, intersection of the Zerafshan and Alay Ranges of Southern Tien-Shan, Tadzhikistan; and (2) the Djelisu massif, Osh region, upper part of the Khodzha-Ochkan river basin, Kyrgyzstan.

Occurrence: (1) In a glacial boulder. Associated minerals are: microcline, pectolite, quartz, aegirine, calcite, fluorite, fluorapatite, titanite, and albite. (2) In albitized nepheline syenites. Associated minerals are: albite, aegirine, quartz, luorapatite, fluorite, and titanite.

General appearance: Grains and euhedral crystals (up to 50 mm long).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity. translucent. Color. apple-green to dark green and brown. Streak: white. Luminescence: non-fluorescent. Hardness: 5 1/2 to 6. Tenacity: brittle. Cleavage: {111} imperfect. Fracture: conchoidal. Density: 3.36 g/[cm.sup.3] (meas.), 3.39 g/[cm.sup.3] (calc.). Crystallography: Tetragonal, P4/mcc, a 7.592, c 14.824 A, V 854 [A.sup.3], Z 2, c:a = 1.9526. Morphology: forms, {100}, {001}, {101}, rarely {110}. Twinning: none observed. X-ray powder diffraction data: 7.59 (23), 5.36 (40), 5.31 (70), 3.40 (100), 3.33 (65), 2.654 (59), 2.175 (25). Optical data: Uniaxial (-) [omega] 1.611, [epsilon] 1.606, nonpleochroic. Chemical analytical data: Five sets of electron microprobe data are given; three for material from Dara-i-Pioz and two from Djelisu. One set from Dara-i-Pioz gave: [Na.sub.2]O 2.89, [K.sub.2]O 4.54, CaO 7.56, MnO 0.01, PbO 0.94, [Al.sub.2][O.sub.3] 0.03, [Fe.sub.2][O.sub.3] 0.10, [REE.sub.2][O.sub.3] 1.50, [SiO.sub.2] 54.58, [ThO.sub.2] 23.43, [UO.sub.2] 1.93, [H.sub.2]O 1.76, F 0.20, sum 99.47, less O = F 0.08, Total 99.39 wt.%. Empirical formula: [([Th.sub.0.78][REE.sub.0.08][U.sub.0.06]-[Pb.sub.0.04][Fe.sub.0.01]) .sub.[sigma]0.97][([Ca.sub.1.18][Na.sub.0.82]).sub.[sigma]2.00][([K.s ub.0.85][[SQUARE].sub.0.15]).sub.[sigma]1.00][Si.sub.7.98][O.sub.12.00][[[O .sub.7.69]-[(OH).sub.0.22][F.sub.0.09]].sub.[sigma]8.00] 0.75[H.sub.2]O. Relationship to other species: The calcium-dominant analogue of steacyite, Th[(Na,Ca).sub.2][K.sub.1-x][Si.sub.8][O.sub.20].

Name: For the locality; Turkestan is a general term for the Middle Asia region. Comments: IMA No. 96-036.

PAUTOV, L. A., AGAKHANOV, A. A., SOKOLOVA, E. V., and KABALOV, Yu. K (1997) Turkestanite Th[(Ca,Na).sub.2]([K.sub.1-x][[SQUARE].sub.x])-[Si.sub.8][O.sub.20]-n[H.sub .2]O--a new mineral with doubled four-member silicon-oxygen rings. Zapiski Vserossiyskogo mineralogicheskogo obshchestva 126(6), 45-54.

Vuoriyarvite

Monoclinic

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

Locality: The central part of the Vuoriyarvi alkali-ultrabasic massif, Kola Peninsula, Russia.

Occurrence: In dissolution cavities in veins of dolomite-calcite carbonatites which crosscut pyroxenites. Associated minerals are: calcite, dolomite, strontianite, ewaldite, minerals of the serpentine and apatite groups, pyrrhotite, pyrite, chalcopyrite, sphalerite, and pyrochlore.

General appearance: Tabular crystals (up to 0.5 x 1.0 x 3.0 mm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: translucent. Color: white. Streak: white. Luminescence, non-fluorescent. Hardness. 4 1/2. Tenacity: brittle. Cleavage: none observed. Fracture: uneven. Density: 2.95 g/[cm.sup.3] (meas.), 3.02 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, Cm, a 14.692, b 14.164, c 7.859 A, [beta] 117.87[degrees], V 1445.7 [A.sup.3], Z 4, a:b:c = 1.0373:1:0.5549. Morphology: forms, (001)}, {100}, and {h01}. Twinning: on (001). X-ray powder diffraction data: 7.10 (9), 4.98 (6), 3.262 (10), 3.151 (8brd), 2.956 (6), 2.549 (4), 1.723 (4). Optical data: Biaxial (+), [alpha] 1.649, [beta] 1.655, [gamma] 1.759, 2V(meas.) 20[degrees], 2V(calc.) 28[degrees]; dispersion r [less than] v, weak; nonpleochroic; X = b, Z = c (although not stated, Y [caret] a = 28[degrees] in obtuse angle [beta]). Chemical analytical data: Means of three sets of electron microprobe data: [Na.sub.2]O 2.80, [K.sub.2]O 7.30, CaO 0.02, BaO 3.18, [Fe.sub.2][O.sub.3] 0.03, [SiO.sub.2] 36.80, [TiO.sub.2] 0.81, [Nb.sub.2][O.sub.5] 37.50, [H.sub.2]O (11.56), Total (100.00) wt.%. The water content was calculated by difference. Empirical formula: [([K.sub.1.02][Na.sub.0.59][Ba.sub.0.14]).sub.[sigma]1.75][([Nb.sub.1 .867][Ti.sub.0.07]).sub.[sigma]1.93][([Si.sub.2][O.sub.6]).sub.[sigma ]2.01][[[O.sub.1.41][(OH).sub.0.59]].sub.[sigma]2.00]*3.93[H.sub.2]O. Relationship to other species: Structurally related to labuntsovite and nenadkevichite.

Name: For Lake Vuoriyarvi. Comments: IMA No. 95-031.

SUBBOTIN, V. V., VOLOSHIN, A. V., PAKHOMOVSKII, Ya. A., BAKHCHISARAITSEV, A. Yu., PUSHCHAROVSKY, D. Yu., RASTVETAEVA, R. K., and NADEZHINA, T. N. (1998) Vuoriyarvite [(K,Na).sub.2][(Nb,Ti).sub.2][Si.sub.4][O.sub.12][(O,OH).sub.2]*4[H.s ub.2]O--new mineral from carbonatite of the Vuoriyarvi massif (Kola Peninsula). Doklady Akademia Nauk 358(4), 517-519.

Wilhelmkleinite

Monoclinic

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

Locality: Level 44 (about 1,500 meters below the present surface) of the Tsumeb mine, Tsumeb, Namibia.

Occurrence: In an oxidation zone. Associated minerals are: scorodite, gerdtremmelite, and adamite.

General appearance: Aggregates (up to 1 x 1 x 0.5 cm) of closely intergrown spearhead shaped crystals (up to 5 mm).

Physical, chemical and crystallographic properties: Luster: dull, but adamantine on fractures. Diaphaneity: translucent. Color: blackish green. Streak: green. Luminescence: non-fluorescent, Hardness: 4'b. Tenacity: not given. Cleavage.' {232}, perfection not given. Fracture: uneven. Density: could not be determined, 4.36 g/[cm.sup.3] (calc.) (for the ideal composition). Crystallography: Monoclinic, [P2.sub.1]/n, a 6.631, b 7.611, c 7.377 A, [beta] 91.80[degrees], V 372.12 [A.sup.3], Z 2, a:b:c = 0.8712:1:0.9693. Morphology: forms {430}, {311}, {100}. Twinning: interpenetration on (101). X-ray powder diffraction data: 3.385 (100), 3.3 15 (78), 2.939 (47), 2.839 (28), 2.381 (29), 2.331 (29), 1.660 (27), 1.652 (32), 1.621 (34). Optical data: Complete optical data are not given; n is about 1.94; pleochroism strong from olive-green and emerald-green to reddish-brown. Chemical analytical data: Means of five sets of electron microprobe data: ZnO 13.81, [Fe.sub.2][O.sub.3] 33.60, [As.sub.2][O.sub.5] 46.69, [H.sub.2]O (5.90), Total (100.00) wt.%. Water was calculated by difference. Empirical formula: [Zn.sub.0.79][[Fe.sup.3+].sub.1.96][(As[O.sub.4]).sub.1.89][O.sub.2.4 4][H.sub.3.05]. Relationship to other species: It is chemically similar to ojuelaite, Zn[[Fe.sup.3+].sub.2][(As[O.sub.4]).sub.2][(OH).sub.2]*4[H.sub.2]O.

Name: For Wilhelm Klein (1889-1939), manager of the OMEG mines, Namibia, from 1916 to 1939, and discoverer of the mineral germanite described by Pufahl in 1922. Comments: IMA No. 97-034. The mineral was collected by Charles Key in 1994. A short description of the crystal structure is given in the paper; a detailed description of the structure will be published elsewhere. A drawing of a twinned crystal is given in the paper; I am grateful to Dr. R. Peter Richards who kindly redrew it for this abstract. In addition, I have drawn a single crystal in the standard orientation using information which Dr. Schluter was kind enough to provide.

SCHLUTER, J., KLASKA, K.-H., FRIESE, K., ADIWIDJAJA, G., and GEBHARD, G. (1998) Wilhelmkleinite, [[ZnFe.sup.3+].sub.2] [(As[O.sub.4]).sub.2]-[(OH).sub.2], a new mineral from Tsumeb, Namibia. Neues Jahrbuch fur Mineralogie, Monatshefte 1998(12), 558-564.

Wiluite

Tetragonal

[Ca.sub.19] [(Al,Mg,Fe,Ti).sub.13] [(B,Al,[SQUARE]).sub.5] [Si.sub.18] [O.sub.68] [(O,OH).sub.10]

Locality: The Wilui River region, Sakha Republic (Yakutia), Russian Federation. The mineral has been identified also from Templeton Township, Ottawa County, Quebec, Canada, and from the Bill Waley mine, Tulare County, California, USA.

Occurrence: In a serpentinized skarn. Associated minerals are: grossular, fine-grained serpentine minerals, serpentine minerals, carbonate, altered pyrite, "chlorite," and "achtarandite" (a tetrahedral pseudomorph of an unknown mineral (possibly wadalite).

General appearance: Euhedral crystals (up to 3 x 3 x 5 cm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: translucent. Color: dark green. Streak: white. Luminescence: non-fluorescent. Hardness: 6. Tenacity: brittle. Cleavage: {100} poor. Fracture: irregular. Density: 3.36 g/[cm.sup.3] (measured), 3.36 g/[cm.sup.3] (calculated). Crystallography: Tetragonal, P4/nnc, a 15.752, c 11.717 A, V 2907.3 [A.sup.3], Z 2, c:a = 0.7438. Morphology: forms {100} and {101} dominant, {110} and {001} minor. Slightly elongate on [001]. Twinning: none observed. X-ray powder diffraction data: 2.776 (100) (342), 2.617 (61) (252), 2,592 (43) (224), 2.491 (61) (260), 2.121 (20) (135), 1.66 (26) (346), 1.64 (23) (292). Optical data: Uniaxial (+), [omega] 1.721, [epsilon] 1.725, nonpleochroic. The mineral show "anomalous" optical properties with strong optical sector zoning: {001} sectors show a cross-hatched pattern (possibly due to twinning) and {110} and {100} sectors show fine striations. The {001} sector has low birefringence and is slightly biaxial wi th 2V between 0[degrees] and 10[degrees]; the {110} sectors have higher birefringence with 2V between 10[degrees] and 25[degrees]. Chemical analytical data: Means of twenty-five sets of electron microprobe data: MgO 6.48, CaO 35.54, FeO 1.21, [B.sub.2][O.sub.3] 3.06, [Al.sub.2][O.sub.3] 12.03, [Fe.sub.2][O.sub.3] 2.28, [Ce.sub.2][O.sub.3] 0.18, [SiO.sub.2] 36.11, [TiO.sub.2] 0.80, [H.sub.2]O 0.61, F 0.50, sum 98.90, less O = F 0.21, Total 98.59 wt.%. Empirical formula: [([Ca.sub.18.97][Ce.sub.0.03]).sub.[sigma]19.00][([Al.sub.6.55][Mg.su b.4.80][[Fe.sup.3+].sub.0.85][[Fe.sup.2+].sub.0.50][Ti.sub.0.30]).sub .[sigma]13.00]-[([B.sub.2.63][[SQUARE].sub.1.91][Al.sub.46]).sub.[sigma]5.0 0][[([Si.sub.17.96][Al.sub.0.04]).sub.[sigma]18.00][O.sub.68.00][[O.s ub.7.19][(OH).sub.2.02][F.sub.0.79]).sub.[sigma]10.00]. Relationship to other species: A boron-dominant analogue of vesuvianite.

Name: For the locality. Comments: IMA No. 97-026. The mineral has been considered as a variety of vesuvianite for many years and specimens are present in large amounts in museum and private collections throughout the world. The drawing produced for this abstract is based on drawings which have appeared in old textbooks. Note that the new unit cell given by Groat et al. (1998) requires re-indexing of the forms shown in the older drawings. The paper by Groat, Hawthorne and Ercit(1994) gives full details of the crystal structure.

GROAT, L.A., HAWTHORNE, F. C., and ERCIT, T. S. (1994) The incorporation of boron into the vesuvianite structure. Canadian Mineralogist 32, 505-523. GROAT, L. A., HAWTHORNE, F. C., ERCIT, T. S., and GRICE, J. D. (1998) Wiluite, [Ca.sub.19][(Al,Mg,Fe,Ti).sub.13][(B,Al,[SQUARE]).sub.5][Si.sub.18][O.sub.6 8][(O,OH).sub.10], a new mineral species iso-structural with vesuvianite, from the Sakha Republic, Russian Federation. Canadian Mineralogist 36, 1301-1304.

Wooldridgeite

Orthorhombic

[Na.sub.2]Ca[Cu.sub.2][([P.sub.2][O.sub.7]).sub.2]*10[H.sub.2]O

Locality: Judkins Quarry, Nuneaton, Warwickshire, England, United Kingdom (national grid reference SP 346 930).

Occurrence: In a calcite-barite-Cu-sulfide assemblage within 20 meters of an unconformity between Precambrian igneous rocks and overlying Cambrian sediments. Associated minerals are: calcite, chalcopyrite, bornite, and barite.

General appearance: Intergrown crystalline aggregates and isolated well-formed equant crystals (50 to 200 microns in maximum dimension).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: blue-green. Streak: very pale blue. Luminescence: non-fluorescent. Hardness: 2 to 3. Tenacity: brittle. Cleavage: none. Fracture: irregular. Density: could not be determined, 2.26 g/[cm.sub.3] (calculated). Crystallography: Orthorhombic, Fdd2, a 11.938, b 32.854, c 11.017 A, V 4321.2 [A.sup.3], Z 8, a:b:c = 0.3634:1:0.3353. Morphology: no forms were identified, but equant "rhombic dipyramids" are mentioned (see Comments). Twinning: none observed. X-ray powder diffraction data: 8.23 (30) (040), 6.52 (100) (131), 4.05 (40) (260), 3.255 (40) (262), 2.924 (40) (371), 2.807 (25) (173), 2.614 (20) (333, 044). Optical data: (See Comments). Biaxial (+), [alpha] 1.508, [beta] 1.511, [gamma] 1.517, 2V(meas.) 76.2[degrees], 2V(calc.) 71[degrees]; dispersion none; nonpleochroic; orientation, X = b, Y = c, Z = a. Chemical analytical data: Means of an unspecified number of sets of electron microprobe data: [Na.sub.2]O 8.33, [K.sub.2]O 0.17, MgO 0.24, CaO 7.73, CuO 20.24, [P.sub.2][O.sub.5] 39.37, [H.sub.2]O 24.72, Total 100.80 wt.%. Empirical formula: [([Na.sub.1.96][K.sub.0.03]).sub.[sigma]1.99][Ca.sub.1.00][([Cu.sub.1 .85]-[Mg.sub.0.04]).sub.[sigma]1.89][P.sub.4.04][O.sub.14.00]*10[H.su b.2]O. Relationship to other species: It is the second pyrophosphate found in Nature; the other is canaphite.

Name: For James ("Jim") Wooldridge (1923-1995), a keen amateur mineralogist and gemmologist who discovered the mineral. Comments: IMA No. 97-037. The "rhombic dipyramids" mentioned in the paper are not permitted by the crystal class. The pseudo-bipyramidal crystals illustrated in the SEM image probably consist of two rhombic pyramids, possibly {221} and (221}. The mineral is stated to be biaxial (-), but the data show that it is biaxial (+); it has been corrected here. The paper by Cooper and Hawthorne (1990) gives full details of the crystal structure.

COOPER, M. A. and HAWTHORNE, F. C. (1990) The crystal structure of wooldridgeite, [Na.sub.2]Ca[[Cu.sub.2].sup.2+][([P.sub.2][O.sub.7]).sub.2][([H.sub.2 ]O).sub.10], a novel copper pyrophosphate mineral. Canadian Mineralogist 37, 73-81. HAWTHORNE, F. C., COOPER, M. A., GREEN, D. I., STARKEY, R. E., ROBERTS, A. C., and GRICE, J. D. (1999) Wooldridgeite, [Na.sub.2]Ca[[Cu.sub.2].sup.2+][([P.sub.2][O.sub.7]).sub.2][([H.sub.2 ]O).sub.10]:A new mineral from Judkins Quarry, Warwickshire, England. Mineralogical Magazine 63, 13-16.
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Author:Mandarino, J.A.
Publication:The Mineralogical Record
Geographic Code:00WOR
Date:Mar 1, 2000
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