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ABSTRACTS OF NEW MINERAL DESCRIPTIONS.

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

Belloite Monoclinic

Cu(OH)Cl

Locality: An abandoned mine about 3 km west southwest of the village of Sierra Gorda, northeast of Antofagasta, 2nd region, northern Chile.

Occurrence: In a quartz, feldspar, tourmaline rock. Other associated minerals are: nitratine, montmorillonite, paratacamite, atacamite, gunningite, alunite and natrojarosite.

General appearance: Thin encrustations of tiny crystals (about 30 [micro]m, rarely up to 100 [micro]m).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: translucent to transparent. Color: yellowish green to olive green. Streak: yellowish green. Luminescence: nonfluorescent. Hardness: soft. Tenacity: not given. Cleavage: not given. Fracture: not given. Density: not measured, 3.79 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, [P2.sub.1]/a (Effenberger, 1984 for synthetic material), a 5.552, b 6.668, c 6.124 A, [beta] 115.00[degrees], V 205.47 [A.sup.3], Z 4, a:b:c = 0.8326:1:0.9184. Morphology: no forms were observed. Twinning: none mentioned. X-ray powder diffraction data: 5.553 (100) (001), 2.785 (14) (120, 002, 201), 2.758 (52) (112, 121), 2.516 (18) (200), 2.241 (27) (122), 1.851 (21) (213, 003), 1.769 (16) (311, 122), 1.607 (15) (321), 1.499 (13) (113, 320). Optical data: Pleochroic from yellowish green to pale yellowish green. The mean index of refraction calculated from the Gladstone-Dale relationship is 1.84. Chemical analytical data: Means of five sets of electron microprob e data: CuO 68.84, Cl 26.35, [H.sub.2]O 7.47, sum 102.66, less O = Cl 5.96, Total 96.70 wt.%. [H.sub.2]O was analyzed as H by CHN analyzer and recalculated to [H.sub.2]O. OH was confirmed by IR. Empirical formula: [Cu.sub.1.05][(OH).sub.1.00][Cl.sub.0.90][O.sub.0.10]. Relationship to other species: The natural analogue of synthetic Cu(OH)Cl.

Name: For Andres Bello (1780-1865), founder and first rector of the Universidad de Chile, Santiago, Chile. Comments: IMA No. 1998-054. In the presence of water belloite converts within minutes to botallackite and atacamite. The crystal structure of synthetic Cu(OH)Cl was solved by Effenberger (1984).

SCHLUTER, J., KLASKA, K.-H., and GEBHARD, G. (2000) Belloite, Cu(OH)Cl, a new mineral from Sierra Gorda, Antofagasta, Chile. Neues Jahrbuch fur Mineralogie, Monatshefte 2000, 67-73. EFFENBERGER, H. (1984) Verfeinerung der Kristallstruktur von Kupfer(II)-hydroxichlorid, Cu(OH)Cl. Monatshefte fur Chemie 115, 725-730.

Biehlite Monoclinic

[(Sb,As).sub.2][MoO.sub.6]

Locality: The Tsumeb mine, Tsumeb, Namibia (probably from the third oxidation zone).

Occurrence: Associated minerals are: anglesite and wulfenite.

General appearance: Irregular aggregates and felted masses of fibrous crystals (up to 1 cm long and only some [micro]m in diameter).

Physical, chemical and crystallographic properties: Luster: silky (but probably adamantine). Diaphaneity: translucent. Color: white. Streak: white. Luminescence: nonfluorescent. Hardness: soft. Tenacity: flexible. Cleavage: not mentioned. Fracture: not mentioned. Density: could not be measured, 5.23 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/c, a 18.076, b 5.920, c 5.083 A, [beta] 96.97[degrees], V 539.91 [A.sup.3], Z 4, a:b:c = 3.0534:1:0.8586. Morphology: no forms were mentioned; fibers are elongated [001]. Twinning: none mentioned. X-ray powder diffraction data: 5.622 (65) (110), 3.376 (39) (311), 3.104 (61) (311), 2.990 (100) (600), 2.960 (100) (020), 2.104 (42) (620), 1.962 (32) (130). Optical data: no data could be measured, but the mean index of refraction calculated from the Gladstone-Dale relationship is 2.13. Chemical analytical data: Means of five sets of electron microprobe data: [Sb.sub.2][O.sub.3] 60.99, [As.sub.2][O.sub.3] 4.95, Mo[O.sub.3] 33.76, Total 99.70 wt.%. Empirical formula: [([Sb.s ub.1.79][As.sub.0.21]).sub.[sigma]2.00]-[Mo.sub.1.00][O.sub.6.00]. Relationship to other species: None apparent.

Name: For Dr. Friedrich Karl Biehl (1887-), a mineralogist from Munster Germany, who first did research on Tsumeb species. Comments: IMA No. 1999-019a.

SCHLUTER, J., KLASKA, K.-H., ADIWIDJAJA, G., FRIESE, K., and GEBHARD, G. (2000) Biehlite, [(Sb,As).sub.2][MoO.sub.6], a new mineral from Tsumeb, Namibia. Neues Jahrbuch fur Mineralogie, Monatshefte 2000, 234-240.

Bismutopyrochlore Cubic

[(Bi,U,Ca,Pb).sub.1+x][(Nb,Ta).sub.2][O.sub.6](OH)*n[H.sub.2]O

Locality: The pegmatite vein Mika, the eastern Pamirs, Tadjikistan.

Occurrence: In pegmatite. Associated minerals are: lepidolite, microcline, elbaite, topaz, beryl, quartz, fluorapatite, barite, calcite, pyrochlore, uranpyrochlore, uranmicrolite, bismuth, ustarasite, kaolinite and hisingerite.

General appearance: Octahedral crystals (up to 1 cm).

Physical, chemical and crystallographic properties: Luster: shiny adamantine. Diaphaneity: translucent. Color: greenish-brown to black. Streak: yellow. Luminescence: nonfluorescent. Hardness: 5. Tenacity: brittle. Cleavage: none. Fracture: conchoidal. Density: 4.97 g/[cm.sup.3] (meas.), 6.98 g/[cm.sup.3] (calc.). Crystallography: Cubic, Fd3m, a 10.41 A, V 1128 [A.sup.3], Z 8. Morphology: {111} {110}, {211}. Twinning: none observed. X-ray powder diffraction data: 5.98 (4) (111), 2.967 (10) (111), 2.614 (7) (224), 1.848 (9) (044), 1.569 (9) (262), 1.500 (4) (444), 1.195 (8B) (662), 1.145 (5) (735). Optical data: Isotropic, n 2.10. Chemical analytical data: A set of electron microprobe data: [Na.sub.2]O 0.33, [K.sub.2]O 0.48, MgO 0.28, CaO 2.57, MnO 0.16, PbO 5.99, [Al.sub.2][O.sub.3] 0.42, [Fe.sub.2][O.sub.3] 1.74, [Sb.sub.2][O.sub.3] 1.23, [La.sub.2][O.sub.3] 0.18, [Ce.sub.2][O.sub.3] 0.27, [Bi.sub.2][O.sub.3] 14.61, [TiO.sub.2] 0.32, [ThO.sub.2] 0.37, [UO.sub.2] 14.02, [Nb.sub.2][O.sub.5] 34.17, [Ta.sub.2][O.sub.5] 8.55, [H.sub.2]O 14.60, Total 100.29 wt.%. Empirical formula: [([Bi.sub.0.37][U.sub.0.31][Ca.sub.0.27][Pb.sub.0.16][Na.sub.0.06][K. sub.0.06][Sb.sub.0.05][Mn.sub.0.01][Ce.sub.0.01][La.sub.0.01]-[Th.sub .0.01]).sub.[sigma]1.32][([Nb.sub.1.52][Ta.sub.0.23][Fe.sub.0.13][Al. sub.0.05][Mg.sub.0.04][Ti.sub.0.02]).sub.[sigma]1.99][O.sub.6.10][(OH ).sub.0.90]*4.33[H.sub.2]O. Relationship to other species: A member of the pyrochlore group.

Name: For the relationship with pyrochlore. Comments: IMA No. 1998-059. The mineral is metamict and the unit cell parameter and the X-ray powder diffraction data were obtained after heating at 700[degrees]C for four hours. The large difference between the measured and calculated densities probably is a function of the heat treatment.

CHUKANOV, N. V., SKRIGITIL, A. M., KUZMINA, O. V. and ZADOV, A. E. (1999) Bismutopyrochlore [(Bi,U,Ca,Pb).sub.1+x]-[(Nb,Ta).sub.2][O.sub.6](OH)*n[H.sub.2]O, a new mineral from the pegmatite vein Mika, the Eastern Pamirs. Zapiski Vserossiyskogo mineralogicheskogo obshchestva 128(4), 36-41.

Bleasdaleite Monoclinic

[(Ca,[Fe.sup.3+]).sub.2][Cu.sub.5](Bi,Cu)[([PO.sub.4]).sub.4][([H.sub .2]O,OH,CI).sub.13]

Locality: A granite quarry 10 km SSW of the township of Lake Boga, northern Victoria, Australia (Lat. 35[degrees]28' S, Long. 143[degrees]38' E).

Occurrence: In a pegmatite. Associated minerals are: orthoclase, chalcocite, covellite, pseudomalachite, chalcosiderite/turquoise, ulrichite, libethenite, torbernite and iodargyrite.

General appearance: Thin, scaly crusts and hemispherical clusters (up to about 0.1 mm across) composed of individual crystals (up to about 20 [micro]m and less than 1 [micro]m thick).

Physical, chemical and crystallographic properties: Luster: resinous. Diaphaneity: transparent in thin sections. Color: dark brown. Streak: pale brown. Luminescence: not given. Hardness: estimated to be about 2. Tenacity: not given. Cleavage. {001} well-developed. Fracture: not given. Density: could not be determined, 2.77 g/[cm.sup.3] (calc.). Crystallography: Monoclinic (pseudotetragonal), space group unknown, a 14.200, b 13.832, c 14.971 A, [beta] 102.08[degrees], V 2875 [A.sup.3] Z 4, a:b:c = 1.0266:1:1.0823. Morphology: only (001) was observed; platy on {001}. Twinning: none mentioned. X-ray powder diffraction data: 14.57 (100) (001), 6.95 (40) (200), 6.28 (40) (112, 021), 3.469 (30b) (312, 400), 3.104 (30) (402), 2.816 (40) (043), 2.507 (30) (152, 243), 2.452 (30) (440). Optical data: Biaxial (-) pseudouniaxial (-), [alpha] 1.718, [beta] 1.748, [gamma] 1.748, 2V could not be measured, 2V(calc.) 0[degrees]; dispersion not given; pleochroism medium strong, X = pale yellow-brown, Y = Z = dark yellow-brown, absorption X [less than] Y = Z; X = c, Y/Z = a/b (See Comments). Chemical analytical data: Means of twenty-four sets of electron microprobe data: CaO 7.59, CuO 34.79, [Fe.sub.2][O.sub.3] 3.04, [Al.sub.2][O.sub.3] 0.13, [Bi.sub.2][O.sub.3] 15.53, [P.sub.2][O.sub.5] 21.70, [As.sub.2][O.sub.5] 0.34, [H.sub.2]O (16.10), Cl 1.01, sum (100.23), less O = Cl 0.23, Total (100.00) wt.%. [H.sub.2]O calculated by difference. Empirical formula: [([Ca.sub.1.63][[Fe.sup.3+].sub.0.46][Al.sub.0.03]).sub.[sigma]2.12][ Cu.sub.5.00][([Bi.sub.0.80][Cu.sub.0.26]).sub.[sigma]1.06][[[([PO.sub .4]).sub.3.67][(As[O.sub.4]).sub.0.04]].sub.[sigma]3.71][[[(OH).sub.5 .18]-[Cl.sub.0.34]].sub.[sigma]5.52]*7.98[H.sub.2]O. Relationship to other species: There are some similarities with richelsdorfite, [Ca.sub.2][Cu.sub.5][Sb.sup.5+][([AsO.sub.4]).sub.4]Cl-[(OH).sub.6]*6 [H.sub.2]O.

Name: For the Reverend John Ignatius Bleasdale (1822-1884), an enthusiastic proponent of minerals from Victoria. Comments: IMA No. 1998-003A. Robin and Gordon Sharp found the mineral and provided samples for the study. The optical orientation is strangely expressed for a monoclinic mineral with [beta] 102.08[degrees]; something appears to be wrong.

BIRCH, W. D., PRING. A., and KOLITSCH, U. (1999) Bleasdaleite [(Ca,[Fe.sup.3+]).sub.2][Cu.sub.5](Bi,Cu)[([PO.sub.4]).sub.4][([H.sub .2]O,OH,Cl).sub.13] a new mineral from Lake Boga, Victoria, Australia. Australian Journal of Mineralogy 5, 69-75.

Brandholzite Trigonal

Mg[[Sb[(OH).sub.6]].sub.2]*6[H.sub.2]O

Locality: The former Brandholz-Goldkronach mining district in the western part of the Fichtelgebirge, Bavaria, Germany. Specifically, it was found in the Schmidten-Schacht and Jakobi-Schacht (pits) of the master lode.

Occurrence: An alteration product of stibnite in the oxidation zone in a stibnite matrix with "antimony-ochers."

General appearance: Tabular hexagonal crystals up to [sim] 1 mm in diameter (most are [less than] 0.5 mm) forming rose-like aggregates.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: colorless. Streak: white. Luminescence: nonfluorescent. Hardness: VHN (load not specified) 60 kg/[mm.sup.2], Mohs 2 to 3. Tenacity: brittle. Cleavage: none. Fracture: conchoidal. Density: 2.65 g/[cm.sup.3] (meas.), 2.57 g/[cm.sup.3] (calc.). Crystallography: Trigonal, P3, a 16.119, c 9.868 A, V 2220.4 [A.sup.3], Z 6, c:a = 0.6122. Morphology: the forms are listed as {100} and {001}, but the tabular hexagonal habit requires {010} and {001} also. Twinning: on {100}. X-ray powder diffraction data: No table of data are given, but the strongest lines are listed as 4.636 (100) (300), 3.392 (70) (302), 4.946 (50) (002), 2.356 (40) (332). Optical data: Uniaxial (-), [omega] 1.570, [epsilon] 1.569, nonpleochroic. Chemical analytical data: There was insufficient material for a complete analysis but the synthetic equivalent was analyzed for Sb (by atomic absorption spectroscopy), Mg (by flame emission spectroscopy) and [H.sub.2]O (by TGA) and gave: MgO 6.7, [Sb.sup.2][O.sub.5] 55.0, [H.sub.2]O 39.0, Total 100.7 wt.%. Empirical formula: [Mg.sub.0.94][[Sb[(OH).sub.6]].sub.1.92]*6.49[H.sub.2]O. Relationship to other species: It is the Mg-dominant analogue of bottinoite, Ni[[Sb[(OH).sub.6]].sub.2]*6[H.sub.2]O.

Name: For the locality. Comments: IMA No. 1998-017. It is unfortunate that the complete set of X-ray powder diffraction data was not published.

FRIEDRICH, A., WILDNER, M., TILLMANNS, E., and MERZ, P. L. (2000) Crystal chemistry of the new mineral brandholzite, Mg[([H.sub.2]O).sub.6][[Sb[(OH).sub.6]].sub.2], and of the synthetic analogues [M.sup.2+][([H.sub.2]O).sub.6-][[Sb[(OH).sub.6]].sub.2] ([M.sup.2+] = Mg, Co). American Mineralogist 85, 593-599.

Cabalzarite Monoclinic

Ca[(Mg,Al,Fe).sub.2][([AsO.sub.4]).sub.2][([H.sub.2]O,OH).sub.2]

Locality: The abandoned manganese mine near Falotta, Graubunden, Switzerland.

Occurrence: In manganese ore consisting of braunite, rhodonite, spessartine, tinzenite, parsettensite, sursassite and strontian piemontite in radiolarites. Associated minerals are: quartz, sursassite, adularia, kutnohorite, tilasite, grischunite, arseniosiderite, tripuhyite, rancieite-takenalite and arsenogoyazite.

General appearance: Isolated crystals (up to 1 mm), polycrystalline aggregates (up to 2 mm), fibrous to tabular crystals (up to 3 mm) forming radiating aggregates (up to 5 mm in diameter) and aggregates of parallel needles (up to 2 mm thick).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: light brownish to brownish pink, orange-brown. Streak: white. Luminescence: non-fluorescent. Hardness: [VHN.sub.50] 429 kg/[mm.sup.2], Mohs [sim] 5. Tenacity: not given. Cleavage: none observed. Fracture: irregular. Density: 3.89 g/[cm.sup.3] (meas.), 3.73 g/[cm.sup.3] (calc.) (for the analytical data given here). Crystallography: Monoclinic, C2/m, a 8.925, b 6.143, c 7.352 A, [beta] 115.25[degrees], V 364.6 [A.sup.3], Z 2, a:b:c = 1.4529:1:1.1968. Morphology: only {001} was recognized. Twinning: none mentioned. X-ray powder diffraction data: 4.895 (59) (110), 4.544 (35) (111), 3.373 (54) (202), 3.159 (100) (112), 2.942 (67) (201), 2.684 (55) (311), 2.519 (81) (221). Optical data: Because of inhomogeneity, data were difficult to measure; n [parallel to] to fiber elongation 1.76, n [perpendicular] to fiber elongation 1.70; mean n calculated from the Gladstone-Dale relationship 1.77; nonpleochroic. Chemical analytical data: M eans of four sets of electron microprobe data: MgO 7.54, CaO 13.64, SrO 0.49, [Al.sub.2][O.sub.3] 9.84, [Mn.sub.2][O.sub.3] 0.55, [Fe.sub.2][O.sub.3] 4.38, [SiO.sub.2] 0.05, [As.sub.2][O.sub.5] 55.57, [H.sub.2]O 7.11, Total 99.17 wt.%. Empirical formula: [([Ca.sub.1.00][Sr.sub.0.02]).sub.[sigma]1.02][([Al.sub.0.80][Mg.sub. 0.77][Fe.sub.0.23][Mn.sub.0.03]).sub.[sigma]1.83][([AsO.sub.4]).sub.2 -][[[([H.sub.2]O).sub.1.24][(OH).sub.0.76]].sub.[sigma]2.00]. Relationship to other species: A member of the tsumcorite group with Mg and Al in the M2 site.

Name: For Walter Cabalzar (1919-), an amateur mineralogist of Chur, Switzerland, who contributed to the mineralogy of the Graubunden canton. Comments: IMA No. 1997-012. Note that the crystal structure has been solved.

BRUGGER, J., MEISSER, N., SCHENK, K., BERLEPSCH, P., BONIN, M., ARMBRUSTER, T., NYFELER, D., and SCHMIDT, S. (2000) Description and crystal structure of cabalzarite Ca[(Mg,Al,Fe).sub.2][(As[O.sub.4]).sub.2][([H.sub.2]O,OH).sub.2], a new mineral of the tsumcorite group. American Mineralogist 85, 1307-1314.

Carmichaelite Monoclinic

(Ti,Cr)[O.sub.1.5][(OH).sub.0.5]

Locality: Garnet Ridge, Navajo volcanic field, Colorado Plateau, Arizona, USA.

Occurrence: In pyrope crystals in an ultramafic diatreme. Associated minerals are: rutile and srilankite. Other minerals in the pyrope host crystals are: ilmenite, crichtonite group minerals, spinel and olivine.

General appearance: Anhedral to subhedral elongated platy crystals (up to 30 [micro]m).

Physical, chemical and crystallographic properties: Luster: metallic. Diaphaneity: opaque; translucent under high magnification. Color: black but cinnamon brown in transmitted light. Streak: not given. Hardness: [sim] 6, based on its similar polishing quality to rutile. Tenacity: brittle. Cleavage: none observed. Fracture: not given. Density: not measured, 4.13 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, [P2.sub.1]/c, a 7.706, b 4.5583, c 20.187 A, [beta] 92.334[degrees], V 708.5 [A.sup.3] Z 22, a:b:c = 1.6905:1:4.4286. Morphology: no forms were mentioned. Twinning: none observed. X-ray powder diffraction data: 3.773 (94) (013), 2.842 (100) (115), 2.664 (70) (213), 1.688 (54) (322), 1.679 (44) (226), 1.661 (44) (128), 1.648 (34) (1.1.11). Optical data: In reflected light: gray to white. R about 18%. Chemical analytical data: Means of six sets of electron microprobe data: [TiO.sub.2] 62.16, [Cr.sub.2][O.sub.3] 18.43, [Al.sub.2][O.sub.3] 1.88, FeO 7.61, MgO 2.80, [Nb.sub.2][O.sub.5] 0.37, [V.sub.2][O.sub.3] 0.87, [H.sub.2]O (5.76), Total (99.88) wt.%. [H.sub.2]O calculated by stoichiometry and confirmed by IR spectroscopy. Empirical formula: [([Ti.sub.0.62][Cr.sub.0.19][Fe.sub.0.08][Mg.sub.0.06][Al.sub.0.03][V .sub.0.01]).sub.[sigma]0.99][O.sub.1.49][(OH).sub.0.51]. Relationship to other species: None apparent.

Name: For Prof. Ian S. E. Carmichael (1930-), University of California, Berkeley, for his contributions to petrology. Comments: IMA No. 1996-062. Details of the crystal structure are given in the paper.

WANG, L., ROUSE, R. C., ESSENE, E. J., PEACOR, D. R., and ZHANG, Y. (2000) Carmichaelite, a new hydroxyl-bearing titanate from Garnet Ridge, Arizona. American Mineralogist 85, 792-800.

Cerchiaraite Tetragonal

[Ba.sub.4][Mn.sub.4][Si.sub.6][O.sub.18][(OH).sub.7]Cl

Locality: The Cerchiara mine, near Faggiona village, val di Vara (La Spezia, northern Apennines, Eastern Liguria, Italy.

Occurrence: Filling microfractures and veins (from 0.1 to some millimeters in width) in Jurassic cherts of the "Diaspra di Monte Alpe" formation. Associated minerals are: quartz, pectolite, orientite and calcite. Other new minerals found at the locality are mozartite, CaMn(OH)Si[O.sub.4] and caoxite, Ca[C.sub.2][O.sub.4].3[H.sub.2]O.

General appearance: Scattered individual prismatic to acicular crystals elongated along [001] (up to 2 mm x 0.1 mm) and as a few radiating aggregates (up to about 3 mm in diameter).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: deep green. Streak: pale green. Luminescence: nonfluorescent. Hardness: [VHN.sub.50] 296 kg/[mm.sup.2]. Tenacity: brittle. Cleavage: none. Fracture: uneven. Density: 3.62 g/[cm.sup.3] (meas.), 3.69 g/[cm.sup.3] (calc.). Crystallography: Tetragonal, 14/mmm, a 14.223, c 6.141 A, V 1242.3 [A.sup.3], Z 2, c:a = 0.4318. Morphology: tetragonal prisms are present but not identified. Twinning: none mentioned. X-ray powder diffraction data: 10.15 (M) (110), 5.63 (M) (101), 4.417 (M) (211), 3.319 (S) (321), 3.011 (VS) (411), 2.619 (S) (222), 2.577 (M) (501) plus five other lines with intensities of M. Optical data: Uniaxial (+), [omega] 1.745, [epsilon] 1.765. Chemical analytical data: Means of 42 sets of electron microprobe data: BaO 43.29, [Al.sub.2][O.sub.3] 1.02, [Fe.sub.2][O.sub.3] 2.09, [Mn.sub.2][O.sub.3] 19.57, Si[O.sub.2] 26.18, [H.sub.2]O (4.81), Cl 3.93, sum 100.89, less O = Cl 0.89, Total (100.00) wt.%. [H .sub.2]O was calculated by difference. Empirical formula: [Ba.sub.3.83][([[Mn.sup.3+].sub.3.36][[Fe.sup.3+].sub.0.35][Al.sub.0. 27]).sub.[sigma]3.98][Si.sub.5.91][O.sub.17.26][[[(OH).sub.7.24][Cl.s ub.1.50]].sub.[sigma]8.74]. Relationship to other species: It is a cyclosilicate.

Name: For the locality. Comments: IMA No. 1999-012. Some of the subscripts derived here for the empirical formula differ from those given by the authors.

BASSO, R., LUCCHETTI, G., ZEFIRO, L., and PALENZONA A. (2000) Cerchiaraite, a new natural Ba-Mn-mixed-anion silicate chloride from the Cerchiara mine, northern Apennines, Italy. Neues Jahrbuch fur Mineralogie, Monatshefte 2000, 373-384.

Chromceladonite Monoclinic

KCrMg[[Si.sub.4][O.sub.10]][(OH).sub.2]

Locality: Srednyaya Padma uranium-vanadium deposit, south Karelia, Russia.

Occurrence: In a metasomatite. Associated minerals are: dolomite, quartz, roscoelite, chromphyllite, calcite, hematite, uraninite, zincochromite, vanadium oxides, etc.

General appearance: Aggregates of thin lamellae (up to 1 cm) and as spherulites and veinlets.

Physical, chemical and crystallographic properties: Luster: vitreous to silky. Diaphaneity: transparent. Color: emerald green to dark green. Streak: light green. Luminescence: nonfluorescent. Hardness: 1 1/2 to 2. Tenacity: flexible but not elastic. Cleavage: {00l} perfect. Fracture: platy. Density: 2.90 g/[cm.sup.3] (meas.), 2.97 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2, a 5.267, b 9.101, c 10.162 A, [beta] 100.67[degrees], V 479 [A.sup.3], Z 2, a:b:c = 0.5787:1:1.1166. Morphology: probably only {00l}. Twinning: none observed. X-ray powder diffraction data: 4.54 (93) (020), 4.36 (40) (111), 3.638 (64) (112), 3.097 (51) (112), 2.588 (100) (131), 2.409 (87) (132), 1.518 (56) (331). Optical data: Biaxial (-), [alpha] 1.605, [beta] 1.648, [gamma] 1.654, 2V(meas.) 12[degrees], 2V(calc.) 40[degrees]; dispersion not observed; pleochroism X = colorless to pale green, Y = Z = green; X "" (001) [less than] 5[degrees]. Chemical analytical data: Ten electron microprobe analyses were carried out with Li, [Fe .sup.2+] and [Fe.sup.3+] determined by wet chemical means. Data for the holotype specimen are: [Li.sub.2]O 0.13, [Na.sub.2]O 0.14, [K.sub.2]O 10.42, MgO 7.82, MnO 0.19, FeO 0.73, ZnO 0.22, [Al.sub.2][O.sub.3] 3.25, [V.sub.2][O.sub.3] 1.79, [Cr.sub.2][O.sub.3] 17.01, [Fe.sub.2][O.sub.3] 0.58, Si[O.sub.2] 53.20, Ti[O.sub.2] 0.16, [H.sub.2]O 3.38, F 0.57, sum 99.59, less O = F 0.24, Total 99.35 wt.%. Empirical formula: [([K.sub.0.95][Na.sub.0.02]).sub.[sigma]0.97][([Cr.sub.0.97][V.sub.0. 10][Al.sub.0.09][[Fe.sup.3+].sub.0.03][Ti.sub.0.01]).sub.[sigma]1.20] [([Mg.sub.0.84-][[Fe.sup.2+].sub.0.04][Li.sub.0.04][Zn.sub.0.01] [Mn.sub.0.01]).sub.[sigma]0.94][[([Si.sub.3.82][Al.sub.0.18]).sub.[si gma]4.00][O.sub.10.00][[[(OH).sub.1.62][O.sub.0.25-][F.sub.0.13]].sub .[sigma]2.00]. Relationship to other species: A member of the mica group.

Name: For the relationship to celadonite. Comments: IMA No. 1999-024.

PEKOV, I. V., CHUKANOV, N. V., RUMIANTSEVA, E. V., KABALOV, Yu. K., SCHNEIDER, Yu. and LEDENEVA, N. V. (2000) Chromceladonite KCrMg[[Si.sub.4][O.sub.10]][(OH).sub.2]--a new mineral of the mica group. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 129(1), 38-44.

Coskrenite-(Ce) Triclinic

[(Ce,Nd,La).sub.2][([SO.sub.4]).sub.2]([C.sub.2][O.sub.4])*8[H.sub.2] O

Locality: Alum Cave Bluff, Great Smoky Mountains National Park, Tennessee, U.S.A.

Occurrence: In soil under an overhanging steep cliff. Associated minerals are: epsomite, members of the "hair salt" family (the most abundant of which is apjohnite), gypsum, jarosite, tschermigite, diadochite and four other new species: levinsonite-(Y), zugshunstite-(Ce), the probable ammonium analogue of slavikite and an iron phosphate. See Comments.

General appearance: Aggregates of tabular, wedge-shaped, euhedral crystals (up to about 0.7 mm wide) embedded within epsomite or "hair salt" or in cavities bounded by these minerals.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: pale pink to cream-colored in incandescent light; the pink material is pale blue under fluorescent lighting. Streak: white. Luminescence: nonfluorescent. Hardness: could not be determined. Tenacity: brittle. Cleavage: {00l} perfect. Fracture: not given. Density: could not be determined, 2.90 g/[cm.sup.3] (calc.) (given as 2.881 g/[cm.sup.3]). Other properties: readily soluble in water. Crystallography: Triclinic, P1, a 6.007, b 8.368, c 9.189 A, [alpha] 99.90[degrees], [beta] 105.55[degrees], [gamma] 107.71[degrees], V 407.4 [A.sup.3] Z 1, a:b:c = 0.7179:1:1.0981. Morphology: {100}, {010), {001}, flattened on {100}. Twinning: none mentioned. X-ray powder diffraction data: 8.52 (70) (001), 6.72 (60) (011), 5.48 (100) (110), 4.26 (50) (002, 012), 3.84 (60) (020, 110), 3.35 (40) (022), 2.744 (40) (122, 212, 130, 220). Optical data: Biaxial (-), [alpha] 1.544, [beta] 1.578, [gamma] 1.602, 2V(meas.) 65[degrees], 2V(calc.) 79[degrees] (erroneously given as 690); dispersion r [greater than] v, medium; nonpleochroic; Z' [wedge] c = 21[degrees] in plane of cleavage. Chemical analytical data: Means of three sets of electron microprobe data: [C.sub.2][O.sub.3] 10.2, [Y.sub.2][O.sub.3] 0.1, [La.sub.2][O.sub.3] 4.6, [Ce.sub.2][O.sub.3] 25.9, [Pr.sub.2][O.sub.3] 2.1, [Nd.sub.2][O.sub.3] 13.3, [Sm.sub.2][O.sub.3] 1.0, [Eu.sub.2][O.sub.3] 0.8, [Gd.sub.2][O.sub.3] 0.3, [SO.sub.3] 22.6, [H.sub.2]O 20.4, F 0.3, sum 101.6, less O = F 0.1, Total 101.5 wt.% (given as 100.0). Empirical formula: [([Ce.sub.1.11][Nd.sub.0.56][La.sub.0.20][Pr.sub.0.09][Sm.sub.0.04][E u.sub.0.03][Gd.sub.0.01][Y.sub.0.01]).sub.[sigma]2.05][([SO.sub.4]).s ub.1.98][([C.sub.2][O.sub.4]).sub.1.00][F.sub.0.11]*7.95[H.sub.2]O. Relationship to other species: It is the first rare-earth oxalate mineral.

Name: For Dr. T. Dennis Coskren (1942-), geochemist and geologist from Columbia, Maryland, U.S.A., whose efforts to characterize the minerals from Alum Cave Bluff led to the discovery of the new minerals. Comments: IMA No. 1996-056. Note that the crystal structure has been solved. The authors list destinezite ("diadochite") among the associated minerals; the accepted name for this species is diadochite and "destinezite" is an obsolete synonym for the species. Terms such as "hair salt" also should be avoided.

PEACOR, D. R., ROUSE, R. C., ESSENE, E. J. and LAUF, R. J. (1999) Coskrenite-(Ce), [(Ce,Nd,La).sub.2][([SO.sub.4]).sub.2]([C.sub.2][O.sub.4])*8[H.sub.2] O, a new rare-earth oxalate mineral from Alum Cave Bluff, Tennessee: characterization and crystal structure. Canadian Mineralogist 37, 1453-1462.

Edgarite Hexagonal

Fe[Nb.sub.3][S.sub.6]

Locality: Khibina alkaline complex, Kola Peninsula, Russia (Lat. 67[degrees]43' N, Long. 33[degrees]47' W).

Occurrence: In a fenitized xenolith (approximately 0.2 km across) enclosed by nepheline syenite. Associated minerals are: pyrrhotite (Ti- and V-rich), ferroan alabandite, marcasite (Ti- and V-rich), wurtzite-2H (Mn- and Fe-rich), corundum, phlogopite, rutile, monazite-(Ce) and a graphite-like mineral.

General appearance: Platy inclusions (up to 0.15 mm) in pyrrhotite and alabandite and as aggregates of platy grains on pyrrhotite.

Physical chemical and crystallographic properties: Luster: metallic. Diaphaneity: opaque. Color: dark gray. Streak: not given. Hardness: [VHN.sub.5] 135 kg/[mm.sup.2] and [VHN.sub.10] 205 kg/[mm.sup.2], soft. Tenacity: not given. Cleavage: {001} perfect. Fracture: not given. Density: not measured, 4.99 g/[cm.sup.3] (calc.). Crystallography: Hexagonal, most probably [P6.sub.3]22, a 5.771, c 12.190 A, V 351.6 [A.sup.3], Z 2, c:a = 2.1123. Morphology: no forms were observed. Twinning: none mentioned. X-ray powder diffraction data: 6.11 (8) (002), 3.04 (6) (004), 2.606 (8) (112), 2.096 (10) (114), 1.665 (8) (300), 1.524 (6) (008), 1.126 (7) (322), 1.027 (6) (414). Optical data: In reflected light: gray, strong anisotropism from almost white to dark brown, distinct bireflectance, pleochroic from light gray with a bluish tint to gray. [R.sub.1], [R.sub.2]; [[blank].sup.im][R.sub.1], [[blank].sup.im][R.sub.2]: (28.1, 40.2; 13.0, 24.2 %) 470nm, (27.4, 39.3; 12.3, 22.2 %) 546nm, (27.0, 38.5; 12.2, 21.7 %) 589nm, (27.0, 36.9; 12.4, 20.3 %) 650nm. Chemical analytical data: Means of four sets of electron microprobe data: Nb 52.87, Fe 10.12, V 0.36, Mn 0.10, Ti 0.04, S 35.86, Total 99.35 wt.%. Empirical formula: [([Fe.sub.0.96][V.sub.0.04][Mn.sub.0.01]).sub.[sigma]1.01][Nb.sub.3.0 3][S.sub.5.95]. Relationship to other species: It is the natural analogue of synthetic [FeNb.sub.3][S.sub.6].

Name: For Prof. Alan D. Edgar (1935-1998), University of Western Ontario, London, Ontario, Canada, in recognition of his important contributions to the petrology and mineralogy of alkaline rocks. Comments: IMA No. 1995-017.

BARKOV, A. Y., MARTIN, R. F., MEN'SHIKOV, Y. P., SAVCHENKO, Y. E., THIBAULT, Y., and LAAJOKI, K. V. O. (2000) Edgarite, Fe[Nb.sub.3][S.sub.6], first natural niobium-rich sulfide from the Khibina alkaline complex, Russian Far North: evidence for chalcophile behavior of Nb in a fenite. Contributions to Mineralogy and Petrology 138, 229-236.

Ferrokinoshitalite Monoclinic

Ba[[Fe.sup.2+].sub.3]([Si.sub.2][Al.sub.2])[O.sub.10][(OH).sub.2]

Locality: Broken Hill mine near Aggeneys, northern Cape Province, South Africa (Lat. 29[degrees]l4' S, Long. 18[degrees]48' E).

Occurrence: In the garnet- and amphibole-rich manganiferous silicate facies of a banded iron-formation. Associated minerals are: quartz, magnetite, spessartine-rich garnet, "apatite," sillimanite, ferroan gahnite, sulfides, Mn-rich grunerite (in places manganogrunerite), manganoan fayalite and Mn-rich pyroxferroite.

General appearance: Tabular, individual crystals (up to 0.2 mm across).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: translucent. Color: dark green. Streak: green. Luminescence: nonfluorescent under short- or long-wave ultraviolet light; noncathodoluminescent. Hardness: 3. Tenacity: brittle. Cleavage: (001} perfect. Fracture: none. Density: 3.69 g/[cm.sup.3] (meas.), 3.47 g/[cm.sup.3] (calc.) (given as 3.59 g/[cm.sup.3]). Crystallography: Monoclinic, C2/m, a 5.389, b 9.337, c 10.054 A, [beta] 100.53[degrees], V 497.37 [A.sup.3], Z 2, a:b:c = 0.5772:1:1.0768; these data are for the 1M polytype. Morphology: no forms were mentioned but crystals probably are tabular on (001}. Twinning: none mentioned. X-ray powder diffraction data: 3.655 (15) (112), 2.651 (100) (131, 200), 2.447 (15) (132, 201), 2.176 (40) (133, 202), 1.659 (25) (135, 313, 204, 311, 006), 1.551 (30) (060, 331), 1.529 (25) (206), 1.520 (15) (135). Optical data: Complete optical data could not be determined. Biaxial (-), [beta] 1.680, 2V(meas.) [sim] 20[degrees], pleochroism strong X = grass green, Y = dark brown green, Z = dark greenish gray-brown, absorption X [much less than] Z [less than] Y; orientation not given. Chemical analytical data: Means of seven sets of electron microprobe data: [Na.sub.2]O 0.26, [K.sub.2]O 3.18, MgO 5.84, MnO 1.14, FeO 24.27, SrO 0.07, BaO 14.14, [Al.sub.2][O.sub.3] 15.80, [Fe.sub.2][O.sub.3] 2.35, Si[O.sub.2] 28.86, [TiO.sub.2] 2.68, [H.sub.2]O (2.40), F 2.43, sum (103.42), less O = F 1.02, Total (102.40) wt.%. Water was calculated to give F + OH = 2.00 in the formula. Empirical formula: [([Ba.sub.0.47][K.sub.0.34][Na.sub.0.04]).sub.[sigma]0.85][([[Fe.sup. 2+].sub.1.71]-[Mg.sub.0.74][Ti.sub.0.17][[Fe.sup.3+].sub.0.15][Mn.sub .0.08]).sub.[sigma]2.85][([Si.sub.2.44][Al.sub.1.57]).sub.[sigma]4.01 ][O.sub.10.00][[[(OH).sub.1.35][F.sub.0.65]].sub.[sigma]2.00]. Relationship to other species: A member of the mica group, specifically, the [Fe.sup.2+]-dominant analogue of kinoshitalite and a trioctahedral brittle mica. Only the - 1M polytype is known.

Name: For the relationship with kinoshitalite. Comments: IMA No. 1999-026. Prof. A. E. Lalonde, University of Ottawa, assisted in the preparation of this abstract.

GUGGENHEIM, S. and FRIMMEL, H. E. (1999) Ferrokino-shitalite, a new species of brittle mica from the Broken Hill mine, South Africa: structural and mineralogical characterization. Canadian Mineralogist 37, 1445-1452.

Florenskyite Orthorhombic

FeTiP

Locality: The Kaidun meteorite, South Yemen.

Occurrence: In a chondritic meteorite. Associated minerals are: ferroan serpentine, pentlandite and an uncharacterized Fe-Cr phosphide.

General appearance: Four dispersed grains (up to 14 [micro]m).

Physical, chemical and crystallographic properties: Luster: metallic. Diaphaneity: opaque. Color: Megascopic color unknown. Streak: not given. Hardness: not given. Tenacity: not given. Cleavage: not given. Fracture: not given. Density: could not be measured, calculated density not given but was calculated here as 6.08 g/[cm.sup.3] (calc.). Crystallography: Orthorhombic, Pnma, a 6.007, b 3.602, c 6.897 A, V 149.23 [A.sup.3], Z 4, a:b:c = 1.6677:1:1.9148. Morphology: no forms were observed. Twinning: none mentioned. X-ray powder diffraction data: 2.307 (47) (210), 2.301 (100) (112), 2.188 (88) (211), 2.147 (31) (103), 1.938 (45) (013), 1.923 (34) (301), 1.801 (45) (020), 1.115 (38) (230). The pattern was calculated from structural data. Optical data: In reflected light: creamy white. Other optical properties could not be determined. Chemical analytical data: Means of three sets of electron microprobe data: Ti 30.08, Cr 0.93, Fe 40.52, Co 0.60, Ni 5.47, V 0.91, Si 0.59, P 21.69, Total 100.79 wt.%. Empirical form ula: [([Fe.sub.0.98][Ni.sub.0.13]-[Co.sub.0.01]).sub.[sigma]1.12][([Ti.sub .0.85][Cr.sub.0.02][V.sub.0.02]).sub.[sigma]0.89][([P.sub.0.95][Si.su b.0.03]).sub.[sigma]0.98]. Relationship to other species: One of the four known natural phosphides (See Comments).

Name: For Cyrill P. Florensky (1915-1982). Russian geochemist and one of the founders of planetology. Comments: IMA No. 1999-013. The authors state that there are three other natural phosphides: schreibersite, [(Fe,Ni).sub.3]P, barringerite, [(Fe,Ni).sub.2]P, and perryite, [(Ni,Fe).sub.8][(Si,P).sub.3]. However, strictly speaking, perryite cannot be considered a phosphide because the phosphorus is not dominant. There is another phosphide not mentioned by the authors: nickelphosphide, [(Ni,Fe).sub.3]P, described in 1999 (See abstract in the Mineralogical Record 31, 369). Florenskyite has the anti-Pb[Cl.sub.3] structure and is isostructural with synthetic FeZrP.

IVANOV, A. V., ZOLENSKY, M. E., SAITO, A., OHSUMI, K., YANG, S. V., KONONKOVA, N. N., and MIKOUCHI, T. (2000) Florenskyite, FeTiP, a new phosphide from the Kaidun meteorite. American Mineralogist 85, 1082-1086.

Henrymeyerite Tetragonal

BaFe[Ti.sub.7][O.sub.16]

Locality: The Kovdor alkaline ultramafic complex, Kola Peninsula, Russia ([sim] Lat. 67[degrees]3' N, [sim] Long. 30[degrees]3' E).

Occurrence: In a late-stage mineral assemblage associated with carbonatitic rocks. Associated minerals are: tetra-ferriphlogopite, calcite, dolomite, fluorapatite, niobian anatase (?), rimkorolgite, catapleiite, collinsite and pyrite.

General appearance: Well-developed acicular crystals (up to 0.2 mm x several tens of [micro]m).

Physical, chemical and crystallographic properties: Luster: adamantine. Diaphaneity: opaque. Color: black. Streak: reddish brown. Hardness: 5 to 6. Tenacity: very brittle. Cleavage: not mentioned. Fracture: not mentioned. Density: 4.0 g/[cm.sup.3] (meas.), 4.23 g/[cm.sup.3] (calc.). Crystallography: Tetragonal, I4/m, a 10.219, c 2.963 A, V 309.4 [A.sup.3], Z 1, c:a = 0.2900. Morphology: probably {100}, {110} and {101}. Twinning: none mentioned. X-ray powder diffraction data: 3.232 (100) (310), 2.486 (34) (211), 2.236(40) (301), 1.901 (31) (411), 1.703 (22) (600), 1.598 (33) (521), 1.405 (26) (541). Optical data: In reflected light: grayish brown, weak bireflectance in shades of brown. [R.sub.[omega]], [R.sub.[epsilon]]: (12.0, 13.0 %) 460nm, (11.6, 12.6 %) 540nm, (11.4, 12.7 %) 580nm, (11.3, 13.8 %) 660nm. Chemical analytical data: Means of eight sets of electron microprobe data: [Na.sub.2]O 0.40, [K.sub.2]O 0.05, CaO 0.02, FeO 9.20, BaO 18.25, [La.sub.2][O.sub.3] 0.50, [Ce.sub.2][O.sub.3] 0.56, [SiO.sub.2] 0.37, [TiO.sub. 2] 67.78, [Nb.sub.2][O.sub.5] 1.00, Total 98.13 wt.%. Empirical formula: [([Ba.sub.0.96][Na.sub.0.10][K.sub.0.01].sub.[sigma]1.07][Fe.sub.1.03 ][([Ti.sup.6.81][Nb.sub.0.06][Si.sub.0.05][Ce.sub.0.03-][La.sub.0.02] .sub.[sigma]6.97][O.sub.16.00]. Relationship to other species: A member of the cryptomelane group, specifically the Ba-Fe dominant member.

Name: For Prof. Henry 0. A. Meyer (1937-1995) for his contributions to the petrology and mineralogy of mantle-derived xenoliths and kimberlitic rocks and for his services to the mineralogical community.

Comments: IMA No. 1999-016. The crystal drawing presented here was produced from the crystallographic data and the SEM image given in the paper.

MITCHELL, R. H., YAKOVENCHUK, V. N., CHAKHMOURADIAN, A. R., BURNS, P. C., and PAKHOMOVSKY, Y. A. (2000) Henrymeyerite, a new hollandite-type Ba-Fe titanate from the Kovdor complex, Russia. Canadian Mineralogist 38, 617-626.

Hydroxylclinohumite Monoclinic

[Mg.sub.9][(Si[O.sub.4]).sub.4][(OH,F).sub.2]

Locality: The ilmenite/magnetite mine of Zelentsovskaya near Magnitka, Zlatoust district, southwestern Urals, Russia.

Occurrence: In magnesium skarn at the contacts between a metagabbro and xenoliths of dolomite marbles. Associated minerals are: calcite, ferroan spinel and clinochlore.

General appearance: Small grains (0.1 to 5 mm) in cavities up to 5 cm in diameter in calciphires.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: yellow-orange. Streak: white. Luminescence: nonfluorescent. Hardness: [VHN.sub.60] 745 kg/[mm.sup.2], Mohs 6 1/2. Tenacity: brittle. Cleavage: not observed. Fracture: uneven. Density: 3.13 g/[cm.sup.3] (meas.), 3.16 g/[cm.sup.3] (calc.). Crystallography: See Comments. Monoclinic, [P2.sub.1]/c, a 13.6894, b 4.7480, c 10.2730 A, [beta] 100.721[degrees], V 656.06 [A.sup.3] Z 2, a:b:c = 2.8832:1:2.1636. Morphology: no forms were observed, prismatic [100]. Twinning on {00l}. X-ray powder diffraction data: 5.05 (70) (002, 102), 3.72 (95) (202), 2.772 (70) (113), 2.551 (80) (411), 2.516 (93) (313), 2.269 (100) (512), 2.259 (95) (114), 1.747 (79) (422, 522, 124). Optical data: Biaxial (+), [alpha] 1.631, [beta] 1.641, [gamma] 1.664, 2V(meas.) 70[degrees], 2V(calc.) 68[degrees]; dispersion weak; pleochroism X = yellow, Y = light yellow, Z = colorless; Y = b, X = c, Z [wedge] a = 11 [degrees] (in obtuse angle [beta]). Chem ical analytical data: Means of two sets of wet chemical analytical data: MgO 57.56, MnO 0,12, FeO 0.70, Si[O.sub.2] 38.97, Ti[O.sub.2] 0.67, [H.sub.2]O 2.72, F 0.49, sum 101.23, less 0 = F 0.21, Total 101.02 wt.%. Empirical formula: [([Mg.sub.8.81][Fe.sub.0.06-][Ti.sub.0.05][Mn.sub.0.01]).sub.[sigma]8 .93][[Si.sub.4.00][O.sub.15.98]][[[(OH).sub.1.86][F.sub.0.16]].sub.[s igma]2.02]. Relationship to other species: A member of the humite group.

Name: For the relationship with clinohumite. Comments: IMA No. 1998-065. In order to compare monoclinic members of the humite group with orthorhombic members, some mineralogists use a monoclinic unit cell which has its a and b parameters equivalent to the a and b parameters of the orthorhombic cell. This nonstandard orientation, adopted by the authors, has the two-fold axis (also referred to as the "unique axis") as a instead of b. The data given here are for the standard orientation. The data for the nonstandard orientation are: space group [P2.sub.1]/b, a 4.7480, b 10.2730, c 13.6894 A, a 100.7210, V 656.06 [A.sup.3] Z 2, a:b:c = 0.4622:1:1.3326. The elongation is [001] and twinning is on {010}. Prof. Stefano Merlino (Pisa, Italy) kindly transformed some of the crystallographic data from the nonstandard to the standard orientation.

GEKIMYANTS, V. M., SOKOLOVA, E. V., SPIRIDONOV, E. M., FERRARIS, G., CHUKANOV, N. V., PRENCIPE, M., AVDONIN, V. N. and POLENOV, Yu. A. (1999) Hydroxylclinohumite [Mg.sub.9][(Si[O.sub.4])].sub.4][(OH,F).sub.2]--a new mineral of the humite group. Zapiski Vserossiyskogo mineralogicheskogo obshchestva 128(5), 64-70.

Johntomaite Monoclinic

Ba[[Fe.sup.2+].sub.2][[Fe.sup.3+].sub.2][([PO.sub.4].sub.3][(OH).sub. 3]

Locality: On the dumps of the Spring Creek copper mine near Wilmington, southern Flinders Ranges, South Australia, Australia (Lat. 32[degrees]41' S, Long. 138[degrees]07' E).

Occurrence: From a heavily brecciated hydrothermal vein. Associated minerals are: quartz, libethenite, pseudomalachite, mitridatite, goethite, cuprite and copper.

General appearance: Clusters of radiating to subparallel prismatic crystals (0.3 to 1 mm long).

Physical, chemical and crystallographic properties: Luster: given as vitreous, greasy to subadamantine, but the optical data indicate adamantine. Diaphaneity: opaque. Color: greenish black. Streak: dark grayish green. Luminescence: nonfluorescent. Hardness: 4 1/2. Tenacity: brittle. Cleavage: {100} perfect. Fracture: irregular. Density: 4.05 g/[cm.sup.3] (meas.), 4.08 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, [P2.sub.1]/m, a 9.199, b 12.359, c 5.004 A, [beta] 100.19[degrees], V 559.9 [A.sup.3], Z 2, a:b:c = 0.7443:1:0.4049. Morphology: {001}, {101}, {021} and {131}. Twinning: none observed. X-ray powder diffraction data: 3.159 (100) (031, 221), 2.983 (50) (211), 2.749 (50b) (221, 311), 4.573 (40) (011), 3.091 (40) (131). Optical data: Biaxial (-), [alpha] 1.817, [beta] 1.829, [gamma] 1.837, 2V(meas.) 85[degrees], 2V(calc.) 78[degrees]; dispersion r [much less than] v, strong; pleochroism strong, X = bluish green, Y = dark brownish green, Z = brownish, absorption Y [greater than] X [greater than or equal to] Z; Z = b. Chemical analytical data: Means of ten sets of electron microprobe data: [Na.sub.2]O 0.07, MgO 0.05, CaO 3.28, MnO 2.67, FeO 13.34, CuO 0.07, ZnO 0.06, BaO 21.96, [Al.sub.2][O.sub.3] 0.25, [Fe.sub.2][O.sub.3] 22.62, Si[O.sub.2] 0.13, [P.sub.2][O.sub.5] 30.45, [H.sub.2]O 3.73, F 0.36, sum 99.04, less O = F 0.15, Total 98.89 wt.%. Empirical formula: [Ba.sub.1.00][([Fe.sub.1.29][Ca.sub.0.41][Mn.sub.0.26][Na.sub.0.02][M g.sub.0.01][Cu.sub.0.01][Zn.sub.0.01]).sub.[sigma]2.01][([[Fe.sup.3+] .sub.1.97][Al.sub.0.03]).sub.[sigma]2.00][[([P.sub.2.99][Si.sub.0.02] )[O.sub.4]].sub.3.00][[[(OH).sub.2.88][F.sub.0.13]].sub.[sigma]3.01]. Relationship to other species: A member of the bjarebyite group, specifically the ferric-dominant analogue of kulanite, Ba[[Fe.sup.2+].sub.2][Al.sub.2][([PO.sub.4]).sub.3][(OH).sub.3].

Name: For John Toma (1954-) the amateur mineralogist who found the mineral and provided the type specimen. Comments: IMA No. 1999-009.

KOLITSCH, U., PRING, A., and TIEKINK, E. R. T. (2000) Johntomaite, a new member of the bjarebyite group of barium phosphates: description and structure refinement. Mineralogy and Petrology 70, 1-14.

Juanitaite Tetragonal

[(Cu,Ca,Fe).sub.10]Bi[(As[O.sub.4]).sub.4][(OH).sub.11]*[H.sub.2]O

Locality: The Gold Hill mine, Tooele Co., Utah, USA.

Occurrence: On the 30-foot level coating surface and filling thin fractures in limonitic gossan; associated with calcian mixite, conichalcite, chrysocolla, azurite, gold and quartz. On the 150-foot level in as fine-grained coatings on cavity walls in quartz veins; associated with connelite, tyrolite and azurite.

General appearance: Square crystal plates (25 to 150 [micro]m across and 1 [micro]m thick) with rounded corners; also as sheaf-like subparallel aggregates and rosettes.

Physical, chemical and crystallographic properties: Luster: resinous to dull. Diaphaneity: translucent. Color: olive-green to grass-green; reflections from {001} often appear bronzy. Streak: pale greenish yellow. Luminescence: nonfluorescent. Hardness: very soft estimated at about 1. Tenacity: flexible but not elastic. Cleavage: {001} and {110} perfect, {100} good. Fracture: not observed. Density: 3.61 g/[cm.sup.3] (meas.), 3.56 g/[cm.sup.3] (calc.). Crystallography: Tetragonal, [P4.sub.2]/nnm, a 9.961, c 29.19 A, V 2896 [A.sup.3], Z 4, c:a = 2.9304. Morphology: {001}, {110} and {310}. Twinning: none observed. X-ray powder diffraction data: 14.6 (100) (002), 7.04 (50) (110), 6.34 (70) (112), 5.07 (50) (114), 3.146 (60) (310, 303), 2.535 (50) (228). Optical data: Uniaxial (-), subparallel aggregates show an anomalous biaxial figure with 2V [congruent] 20[degrees], [omega] 1.785, [epsilon] 1.705, pleochroism O = olive-brown, E = olive-green. Chemical analytical data: Means of seven sets of electron microprobe data: CaO 8.64, FeO 2.32, CuO 35.97, [Bi.sub.2][O.sub.3] 14.82, [As.sub.2][O.sub.5] 29.35, [H.sub.2]O (8.90), Total (100.00) wt.%. Empirical formula: [([Cu.sub.7.03][Ca.sub.2.39][Fe.sub.0.50]).sub.[sigma]9.92][Bi.sub.0. 99][(As[O.sub.4]).sub.3.97][(OH).sub.10.90]*2.22[H.sub.2]O. Relationship to other species: It is chemically similar to mixite, [Cu.sub.6]Bi[(As[O.sub.4]).sub.3][(OH).sub.6]*3[H.sub.2]O.

Name: For Juanita Curtis (1917-) who found the mineral. Comments: IMA No. 1992-022.

KAMPF, A. R., WISE, W. S., and ROSSMAN, G. R. (2000) Juanitaite--a new mineral from Gold Hill, Utah. Mineralogical Record 31, 301-305.

Kozoite-(Nd) Orthorhombic

Nd([CO.sub.3])(OH)

Locality: Niikoba, Hizen-cho, Higashi Matsuura-gun, Saga Prefecture, Japan.

Occurrence: In cavities and fissures in an alkali olivine basalt. Associated minerals are: lanthanite-(Nd) and/or lanthanite-(La), hyalite-type amorphous silica and kimuraite-(Y).

General appearance: Rhombic bipyramidal crystals (up to 10 [micro]m).

Physical, chemical and crystallographic properties: Luster: vitreous to dull. Diaphaneity: not given. Color: pale pinkish purple to white. Streak: not given. Luminescence: nonfluorescent. Hardness: could not be determined. Tenacity: not given. Cleavage: could not be determined. Fracture: not given. Density: could not be measured, 4.40 g/[cm.sup.3] (calc.). See Comments. Crystallography: Orthorhombic, Pmcn, a 4.9829, b 8.5188, c 7.2570 A, V 308.05 [A.sup.3], Z 4, a:b:c = 0.5849:1:0.8519. Morphology: no forms were mentioned, but the form on the crystals shown in the SEM image probably is {112}. Twinning: none mentioned. X-ray powder diffraction data: 4.29 (100) (110), 3.69 (72) (111), 2.93 (89) (102), 2.640 (59) (031), 2.333 (78) (131), 2.060 (78) (221), 1.994 (75) (212). Optical data: Biaxial (sign unknown), [alpha] 1.698, [gamma] 1.780, high birefringence, 2V not measured, no other properties could be determined. Chemical analytical data: Means of six sets of electron microprobe data: CaO 0.49, [La.sub.2][O.sub.3] 21.39, [Ce.sub.2][O.sub.3] 0.26, [Pr.sub.2][O.sub.3] 6.25, [Nd.sub.2][O.sub.3] 30.66, [Sm.sub.2][O.sub.3] 5.39, [Eu.sub.2][O.sub.3] 1.84, [Gd.sub.2][O.sub.3] 2.99, [Tb.sub.2][O.sub.3] 0.11, [Dy.sub.2][O.sub.3] 0.24, [Y.sub.2][O.sub.3] 0.70, [CO.sub.2] 21.10, [H.sub.2]O 5.44, Total 96.86 wt.%. [CO.sub.2] and [H.sub.2]O by CHN analyzer for C and H. Empirical formula: [([Nd.sub.0.38][La.sub.0.28][Pr.sub.0.08][Sm.sub.0.07][Gd.sub.0.03][E u.sub.0.02][Ca.sub.0.02][Y.sub.0.01]).sub.[sigma]0.89][([CO.sub.3]).s ub.1.01][(OH).sub.0.63][([H.sub.2]O).sub.0.32]. Relationship to other species: Kozoite-(Nd) is dimorphous with hydroxylbastnasite-(Nd) and is isostructural with ancylite-(Ce), calcio-ancylite-(Ce), calcio-ancylite-(Nd), ancylite-(La) and gysinite-(Nd).

Name: For Kozo Nagashima (1925-1985), chemist and pioneer in the study of the chemistry of rare earth minerals in Japan, in recognition of his contributions to the mineralogy, chemistry and crystallography of rare earth minerals. Comments: IMA No. 1998-063. The authors give the calculated density as 4.77 g/[cm.sup.3]; this is the value based on the ideal composition. The value 4.40 g/[cm.sup.3] given above is for the empirical formula. The crystal drawing given here is based on the SEM image.

MIYAWAKI, R., MATSUBARA, S., YOKOYAMA, K., TAKEUCHI, K., TERADA, Y., and NAKAI, I. (2000) Kozoite-(Nd), Nd([CO.sub.3])(OH) a new mineral in an alkali olivine basalt from Hizen-cho, Saga Prefecture, Japan. American Mineralogist 85, 1076-1081.

Kuzmenkoite Monoclinic

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

Locality: Flora Mountain, Lovozero alkaline massif, Kola Peninsula, Russia.

Occurrence: In hydrothermally altered lujavrite. Associated minerals are: labuntsovite, natrolite, calciohilairite, aegirine, eudialyte, lorenzenite, murmanite, potassic feldspar, etc.

General appearance: Prismatic crystals (up to 1.5 mm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: yellow. Streak: white. Luminescence: nonfluorescent. Hardness: 5. Tenacity: brittle. Cleavage: imperfect (direction not given). Fracture: rough. Density: 2.67 g/[cm.sup.3] (meas.), 2.65 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/m, a 14.369, b 13.906, c 7.812 A, [beta] 117.09[degrees], V 1389.8 [A.sup.3], Z 2, a:b:c = 1.0333:1:0.5618. Morphology: {010}, {100}, {001}, {201}, {301}, {110}, {021}, elongated on [010]. Twinning: none observed. X-ray powder diffraction data: 7.00 (9) (001, 020), 6.33 (8) (201), 4.86 (7) (021, 111), 3.17 (10) (421, 402), 3.08 (5) (022, 041), 2.58 (4) (242, 203, 051), 2.47 (4) (403, 042), 1.551 (4) (843, 173, 824). Optical data: Biaxial (+), [alpha] 1.683, [beta] 1.687, [gamma] 1.775, 2V(calc.) 25[degrees]; dispersion r [greater than] v, medium; pleochroism X = Z = colorless, Y yellow. Chemical analytical data: Means of ten sets of electron microprobe data: [Na.sub.2]O 0. 64, [K.sub.2]O 7.33, MgO 0.31, MnO 4.06, FeO 1.18, BaO 1.17, [SiO.sub.2] 43.61, [TiO.sub.2] 25.78, [Nb.sub.2][O.sub.5] 4.82, [H.sub.2]O 10.93, Total 99.83 wt.% (given as 99.90). [H.sub.2]O was determined by TGA. Empirical formula: [([K.sub.1.73][Na.sub.0.23][Ba.sub.0.09]).sub.[sigma]2.05]-[([Mn.sub. 0.64][Fe.sub.0.18][Mg.sub.0.08)].sub.[sigma]0.90][([Ti.sub.3.58][Nb.s ub.0.40]).sub.[sigma]3.98][[[Si.sub.4.03][O.sub.12.09].sub.2]][(OH).s ub.4.14].4.67[H.sub.2]O. Relationship to other species: Structurally related to labuntsovite.

Name: For M. V. Kuz'menko (1918-1995), a specialist in geochemistry and mineralogy of rare elements and a researcher of the Lovozero massif. Comments: IMA No. 1998-058. The empirical formula derived here is slightly different from that given in the paper. Details of the crystal structure are given.

CHUKANOV, N. V., PEKOV, I. V., GOLOVINA, N. I. and ZADOV, A. E. (1999) Kuzmenkoite [K.sub.2](Mn,Fe)[(Ti,Nb).sub.4][([Si.sub.4][O.sub.12]).sub.2-][(OH).s ub.4].5[H.sub.2]O, a new mineral. Zapiski Vserossiyskogo mineralogicheskogo obshchestva 128(4), 42-50.

Lemmleinite Monoclinic

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

Locality: Mount Koashva, Khibina alkaline massif, Kola Peninsula, Russia.

Occurrence: In hyperagpaitic pegmatites. Associated minerals are: K-feldspar, natrolite, aegirine, sodium amphibole, pectolite, shcherbakovite, lamprophyllite, catapleiite, sazykinaite-(Y), sitinakite, lomonosovite, rhabdophane-(Ce), sphalerite and galena.

General appearance: Fibrous pseudo-orthorhombic crystals (0.3 to 0.5 mm, rarely up to 1 mm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent to translucent. Color: colorless. Streak: white. Luminescence: nonfluorescent. Hardness: 5. Tenacity: brittle. Cleavage: none. Fracture: conchoidal. Density: 2.80 g/[cm.sup.3] (meas.), 2.83 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/m, a 14.39, b 13.90, c 7.825 A, [beta] 117.6[degrees], V 1387 [A.sup.3], Z 4, a:b:c = 1.0353:1:0.5629. Morphology: {100}, {041}, {201}, elongated on [001]. Twinning: on (001) and (041). X-ray powder diffraction data: 6.94 (61) (020), 6.39 (43b) (201, 200), 3.186 (100) (402, 421, 400), 3.100 (96) (041, 022), 2.600 (28) (242, 203), 2.586 (28) (241, 202), 2.489 (24) (401). Optical data: Biaxial (+), [alpha] 1.667, [beta] 1.677, [gamma] 1.802, 2V(meas.) 32[degrees], 2V(calc.) 33[degrees]; nonpleochroic; X = b, Z = a, Y [wedge] c = 27[degrees] (in obtuse angle [beta]). Chemical analytical data: Means of four sets of electron microprobe data: [Na.sub.2]O 5.30, [K.sub.2]O 14,92, CaO 0.02, MnO 0.06, FeO 0.04, SrO 0.02, [Al.sub.2][O.sub.3] 0.06, Si[O.sub.2] 39.78, Ti[O.sub.2] 18.42, [Nb.sub.2][O.sub.5] 13.52, [Ta.sub.2][O.sub.5] 0.16, [H.sub.2]O 7.23, Total 99.53 wt.%. Empirical formula: [Na.sub.1.02][K.sub.1.88][([Ti.sub.1.37][Nb.sub.0.61][Mn.sub.0.01]).s ub.[sigma]1.99]-[([Si.sub.3.94][Al.sub.0.01]).sub.[sigma]3.95][O.sub. 12.00][[[O.sub.1.24][(OH).sub.0.76]].sub.[sigma]2.00]*2.00[H.sub.2]O. Relationship to other species: Crystallochemically related to nenadkevichite and labuntsovite.

Name: For Georgy G. Lemmlein (1901-1962), prominent Russian mineralogist and crystallographer. Comments: IMA No. 1997-003.

KHOMYAKOV, A. P., NECHELYUSTOV, G. N., RASTSVETAEVA, R. K., and DOROKHOVA, G. I. (1999) Lemmleinite Na[K.sub.2][(Ti,Nb).sub.2][Si.sub.4][O.sub.12][(O,OH).sub.2].2[H.sub. 2]O--a new mineral of the labuntsovite-nenadkevichite family. Zapiski Vserossiyskogo mineralogicheskogo obshchestva 128(5), 54-63.

Litvinskite Monoclinic

[Na.sub.2]([square],Na,Mn)Zr[[Si.sub.6][O.sub.12][(OH,O).sub.6]]

Locality: The Umbozero mine, Alluaiv Mt., Lovozero alkaline massif, Kola peninsula, Russia.

Occurrence: In the aegirine zone of a hyperagpaitic pegmatite. Associated minerals are: microcline, nepheline, sodalite, eudialyte, lomonosovite, ussingite, mangan-neptunite, terskite and gaidonnayite.

General appearance: Equant irregular grains (up to 7 cm) and aggregates (up to 15 cm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: dark cherry red to reddish brown. Streak: white. Luminescence: nonfluorescent. Hardness: [sim]5. Tenacity: brittle. Cleavage: probably (110) imperfect. Fracture: conchoidal. Density: 2.61 g/[cm.sup.3] (meas.), 2.55 g/[cm.sup.3] (calc.) given as 2.63 g/[cm.sup.3]. Crystallography: Monoclinic, Cm, a 10.589, b 10.217, c 7.355 A, [beta] 92.91[degrees], V 794.6 [A.sup.3], Z 2, a:b:c = 1.0364:1:0.7199. Morphology: no forms were observed. Twinning: none observed. X-ray powder diffraction data: 7.37 (44) (110, 001), 5.29 (100) (111, 200), 3.674 (32) (220, 002), 3.329 (74) (112, 112, 310), 3.238 (100) (130, 221, 112), 2.981 (39) (131, 022, 311), 2.642 (32) (222, 400), 2.553 (37) (040, 222). Optical data: Biaxial (-), [alpha] 1.546, [beta] 1.574, [gamma] 1.575, 2V(meas.) [less than]10[degrees], 2V(calc.) 21[degrees]; dispersion not observed; nonpleochroic; orientation not given. Chemical analytical data: Electron microprobe data: [Na.sub.2]O 12.43, [K.sub.2]O 0.11, CaO 0.13, MnO 1.61, FeO 0.09, [Ce.sub.2][O.sub.3] 0.09, [SiO.sub.2] 57.67, [TiO.sub.2] 0.19, [ZrO.sub.2] 18.85. [HfO.sub.2] 0.22. [Nb.sub.2][O.sub.5] 0.07, [H.sub.2]O 8.90, Total 100.36 wt. %. Empirical formula: [([Na.sub.1.99][K.sub.0.01]).sub.[sigma]2.00][([Na.sub.0.45][Mn.sub.0 .14]-[Ca.sub.0.01][Fe.sub.0.01]).sub.[sigma]0.61][([Zr.sub.0.93][Ti.s ub.0.01][Hf.sub.0.01]).sub.[sigma]0.95][Si.sub.5.84][O.sub.11.99][(OH ).sub.6.01]. Relationship to other species: A member of the lovozerite group.

Name: For Galina P. Litvinskaya (1920-1994), a crystallographer at Moscow State University. Comments: IMA No. 1999-017.

PEKOV, I. V., EKIMENKOVA, I. A., CHUKANOV, N. V., ZADOV, A. E., YAMNOVA, N. A., and EGOROV-TISMENKO, Yu. K. (2000) Litvinskite [Na.sub.2]([square],Na,Mn)Zr[[Si.sub.6][O.sub.12][(OH,O).sub.6]]--a new mineral of the lovozerite group. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 129(1), 45-53.

Lulzacite Triclinic

[Sr.sub.2][Fe.sup.2+][([Fe.sup.2+],Mg).sub.2][Al.sub.4][([PO.sub.4]). sub.4][(OH).sub.10]

Locality: A quartzite quarry near Saint-Aubin-des-Chilteaux, about 8 km west of Chateaubriant, Loire-Atlantique, France.

Occurrence: In veinlets at the contact between quartzite and pyrite-rich limestone. Associated minerals are: goyazite, "apatite," siderite, quartz, calcite, marcasite, pyrrhotite and pyrite.

General appearance: Anhedral aggregates (up to several cm long); rarely as pseudo-pyramidal euhedral crystals (up to 4 mm).

Physical, chemical and crystallographic properties: Luster: probably vitreous. Diaphaneity: transparent to translucent. Color: dark grayish-green to yellowish-green. Streak: not given. Luminescence: nonfluorescent. Hardness: 5 1/2 to 6. Tenacity: not given. Cleavage: not given. Fracture: not given. Density: 3.55 g/[cm.sup.3] (meas.), 3.56 g/[cm.sup.3] (calc.). Crystallography: Triclinic, P1, a 5.457, b 9.131, c 9.769 A, [alpha] 108.47[degrees], [beta] 91.72[degrees], [gamma] 97.44[degrees] V 465.5 [A.sup.3], Z 1, a:b:c = 0.5976:1:1.0699. Morphology: No forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 4.47 (41) (021), 3.591 (50) (111), 3.218 (100) (122), 3.132 (62) (120), 3.016 (56) (122), 2.878 (42) (032), 2.8119 (58) (113), 2.6526 (44) (132), 2.6635 (43) (013). Optical data: Biaxial (-), [alpha] 1.654, [beta] 1.674, [gamma] 1.684, 2V(meas.) 45[degrees] to 65[degrees], 2V(calc.) 70[degrees], dispersion r [less than] v, distinct; pleochroism distinct from brown-yellow to pale blue -violet; orientation not given. Chemical analytical data: Means of fifteen sets of electron microprobe data: MgO 2.97, SrO 21.79, BaO 1.20, FeO 16.13, MgO 2.97, [Al.sub.2][O.sub.3] 19.16, [P.sub.2][O.sub.5] 28.50, [V.sub.2][O.sub.5] 0.64, [H.sub.2]O 10.29, Total 100.68 wt. %. Empirical formula: [([Sr.sub.2.05][Ba.sub.0.08]).sub.[sigma]2.13]-[[Fe.sup.2+].sub.1.00] [([[Fe.sup.2+].sub.1.18][Mg.sub.0.71]).sub.[sigma]1.89][Al.sub.3.66][ [[([PO.sub.4]).sub.3.91][([VO.sub.4]).sub.0.07].sub.[sigma]3.98][(OH) .sub.11.11]. The ideal formula requires: MgO 3.31, FeO 16.20, SrO 2l.25, [Al.sub.2][O.sub.3] 20.91, [P.sub.2][O.sub.5] 29.09, [H.sub.2]O 9.24, Total 100.00 wt.%. Relationship to other species: It is isotypic with jamesite whose revised formula is [Pb.sub.2]Zn[[Fe.sup.3+].sub.2]([[Fe.sup.3+].sub.2.8][Zn.sub.1.2])[([ AsO.sub.4]).sub.4][(OH).sub.8][[(OH).sub.1.2][O.sub.0.8]].

Name: For Y Lulzac (1934-), mining geologist of the BRGM who discovered the mineral. Comments: IMA No. 1998-039. Note that the crystal structure has been solved and published.

LEONE, P., PALVADEAU, P. and MOELO, Y (2000) Structure cristalline d'un nouvel hydroxyphosphate naturel de strontium, fer et aluminium (lulzacite), [Sr.sub.2]Fe[([Fe.sub.0.63][Mg.sub.0.37]).sub.2][Al.sub.4][([PO.sub.4 ]).sub.4][(OH).sub.10]. MOELO, Y, LASNIER, B., PALVADEAU, P., LEONE, P., and FONTAN, F. (2000) La lulzacite, [Sr.sub.2][Fe.sup.2+][([Fe.sup.2+],Mg).sub.2][Al.sub.4][([PO.sub.4]). sub.4]-[(OH).sub.10], un nouveau phosphate de strontium (Saint-Aubin-des-Chateaux, Loire-Atlantique, France). Comptes Rendu Academie des Sciences de la terres et des planetes 330, 317-324.

Magnesiofoitite Trigonal

[square]([Mg.sub.2]Al)[Al.sub.6]([Si.sub.6][O.sub.18])[([BO.sub.3]).sub.3][ (OH).sub.4]

Locality: The Kyonosawa area, Mitomi-mura, Higashi-Yamanashigun, Yamanashi-ken Prefecture, Honshu, Japan (approximately 100 km west of Tokyo).

Occurrence: In highly altered andesitic to dacitic rocks. Associated minerals are: quartz, dumortierite, kaolinite and rutile.

General appearance: Felted masses of fibrous crystals; individual crystals average [sim] 5 [micro]m wide by 50 [micro]m long with the largest about 15 [micro]m wide by 1 mm long.

Physical, chemical and crystallographic properties: Luster: presumably vitreous. Diaphaneity: not given. Color: pale bluish gray. Streak: not given. Luminescence: not given. Hardness: [sim] 7. Tenacity: brittle. Cleavage: none. Fracture: not given. Density: could not be measured, 3.00 g/[cm.sup.3] (calc.). Crystallography: Trigonal, R3m, a 15.884, c 7.178 A, V 1568.0 [A.sup.3], Z 3, c:a = 0.4519. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 6.366 (6) (101), 4.211 (9) (211), 3.969 (10) (220), 3.470 (6) (012), 2.949 (7) (122), 2.567 (10) (051), 2.037 (5) (152). Optical data: Uniaxial (+) erroneously given as (-), [omega] 1.624, [epsilon] l.650, pleochroism O = gray-blue, E = pale lavender, absorption O [greater than] E. Chemical analytical data: An electron microprobe analysis gave: [Na.sub.2]O 0.70, MgO 6.15, FeO 0.97, [B.sub.2][O.sub.3] (11.09), [Al.sub.2][O.sub.3] 40.17, [SiO.sub.2] 38.27, [H.sub.2]O (3.82), Total 101.17 wt.%. [B.sub.2][O.sub.3] and [H.sub.2]O were calculated to give B = 3 and OH = 4 in the formula. Empirical formula: [([[square].sub.0.79][Na.sub.0.21]).sub.[sigma]1.00][([Mg.sub.1.42][Al.sub. 1.35][Fe.sub.0.13]).sub.[sigma]1.90][Al.sub.6.00]-[Si.sub.5.94][O.sub .18.13][([BO.sub.3]).sub.2.97][(OH).sub.3.96]. After adjustment to B = 3.00 and OH = 4.00, this becomes: .sub.[([[square].sub.0.79][Na.sub.0.21).sub.[sigma]1.00]([Mg.sub.1.44][Al.s ub.1.42][Fe.sub.0.13]).sub.[sigma]1.99]-[Al.sub.6.00][Si.sub.6.00][O. sub.18.00][([BO.sub.3]).sub.3.00][(OH).sub.4.00]. Relationship to other species: A member of the tourmaline group.

Name: For the relationship with foitite. Comments: IMA No. 1998-037.

HAWTHORNE, F. C., SELWAY, J. B., KATO, A., MATSUBARA, S., SHIMIZU, M., GRICE, J. D., and VAJDAK, J. (1999) Magnesiofoitite, [square]([Mg.sub.2]Al)[Al.sub.6]([Si.sub.6][O.sub.18])[([BO.sub.3]).sub.3][ (OH).sub.4], a new alkali-deficient tourmaline. Canadian Mineralogist 37, 1439-1443.

Mozgovaite Orthorhombic

[PbBi.sub.4][(S,Se).sub.7]

Locality: La Fossa crater of Volcano, one of the Aeolian Islands, north of Sicily, Italy.

Occurrence: A sublimate in a fumarole. Associated minerals are: bismuthinite (dominant), galenobismutite, cannizzarite and lillianite.

General appearance: Acicular crystals (up to 0.2 mm long x 0.02 mm wide).

Physical, chemical and crystallographic properties: Luster: metallic. Diaphaneity: opaque. Color: silvery gray. Streak: not given but probably gray to black. Hardness: [VHN.sub.10] 116 kg/[mm.sup.2]. Tenacity: not given. Cleavage: not given. Fracture: not given. Density: could not be measured, 6.29 g/[cm.sup.3] (calc.) (given as 6.26 g/[cm.sup.3]). Crystallography: Orthorhombic, Bbmm, a 13.18, b 37.4, c 4.05 A, V 1996.4 [A.sup.3] Z 6, a:b:c = 0.3524:1:0.1083. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 3.80 (10) (280, 121), 3.58 (3) (141), 3.40 (2) (151), 3.30 (3) (400), 3.11 (2) (430), 2.95 (4B) (321), 2.81 (2) (191, 470), 2.34 (4B) (0.16.0). Optical data: In reflected light: white, rather strong anisotropism, very weak bireflectance, nonpleochroic. [R.sub.1], [R.sub.2]: (40.2, 35.8 %) 460nm, (40.6, 35.3 %) 540nm, (40.6, 35.0 %) 580nm, (40.1, 34.9 %) 660nm. Chemical analytical data: Means of four sets of electron microprobe data: Cu 0.01, Pb 13.90, Fe 0.02, Cd 0.26, Se 1.63, As 0.05, Bi 64.79, S 16.91, Total 97.57 wt.%. Empirical formula: [(Pb.sub.0.87][Cd.sub.0.03]).sub.[sigma]0.90] [(Bi.sub.4.01][As.sub.0.01]).sub.[sigma]4.02][(S.sub.6.82][Se.sub.0.2 7].sub.[sigma]7.09]. Relationship to other species: It is the natural analogue of synthetic [PbBi.sub.4][S.sub.7].

Name: For Dr. Nadezhda Nikolaevna Mozgova (1931-), mineralogist of IGEM, Academy of Sciences, Moscow, Russia, in recognition of her important contributions to the knowledge of ore mineralogy and, particularly, sulfosalt minerals. Comments: IMA No. 1998-060.

VURRO, F., GARAVELLI, A., GARBARINO, C., MOELO, Y, and BORODAEV, Yu. S. (1999) Rare sulfosalts from Vulcano, Aeolian Islands, Italy. II. Mozgovaite, Pb[Bi.sub.4][(S,Se).sub.7], a new mineral species. Canadian Mineralogist 37, 1499-1506.

Niobokupletskite Triclinic

[K.sub.2]Na[(Mn,Zn,Fe).sub.7][(Nb,Zr,Ti).sub.2][Si.sub.8][O.sub.26][( OH).sub.4](O,F)

Locality: Poudrette Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada.

Occurrence: In nepheline syenite pegmatites. There are three distinct types of material, each with its own suite of associated minerals. Type-I: kupletskite, aegirine, albite, microcline and pyrochlore. Type-II: kupletskite, aegirine, albite, calcio-ancylite(Ce), catapleiite, microcline, natrolite, pyrochlore and rhodochrosite. Type-III: kupletskite, aegirine, albite, analcime, calcio-ancylite-(Ce), calcite, catapleiite, epididymite, fluorite, genthelvite, microcline, natrolite, pyrochlore, rhodochrosite and wurtzite.

General appearance: Type-I: anhedral to subhedral, platy to tabular epitaxic growths on kupletskite. Type-II: dense, fibrous overgrowth on kupletskite. Type-III: very fine-grained acicular crystals in sheaf-like aggregates (originally described as "witch's broom astrophyllite"). Size varies from zones up to 0.5 mm, grains up to 1 mm in diameter and aggregates 5.0 x 2.0 mm of acicular crystals 1.0 x 0.05 mm.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: light beige to yellow (Type-I), light yellow-brown (Type-II), bronze to silvery brown (Type-III). Streak: light brown. Luminescence: nonfluorescent. Hardness: 3 to 4. Tenacity: brittle. Cleavage: {001} perfect. Fracture: uneven to splintery. Density: greater than 3.325 g/[cm.sup.3] (meas.), 3.46 g/[cm.sup.3] (calc.). Crystallography: Triclinic, P1, a 5.4303, b 11.924, c 11.747 A, [alpha] 112.927[degrees], [beta] 94.750[degrees], [gamma] 103.175[degrees], V 669.5 [A.sup.3] Z 1, a:b:c = 0.4554:1:0.9852. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 10.707 (100) (001), 4.405 (20) (111), 3.536 (50) (003), 3.294 (20) (113), 2.793 (40) (131), 2.677 (30) (211), 2.587 (40) (130), 2.503 (20) (212). Optical data: Biaxial (+), [alpha] 1.718, [beta] 1.733, [gamma](calc.) 1.750, 2V(meas.) 87[degrees]; pleochroism X [approximate] Y =

light orange-yellow, Z = red-brown; X and Y in the (001) plane, Z = c. Chemical analytical data: Analytical data for all three types are given. Means of three sets of electron microprobe data for Type-I: [Na.sub.2]O 2.62, [K.sub.2]O 5.97, [Rb.sub.2]O 0.82, [Cs.sub.2]O 0.12, MgO 0.15, MnO 26.37, FeO 2.64, ZnO 4.08, [Al.sub.2][O.sub.3] 1.14, [SiO.sub.2] 31.85, [TiO.sub.2] 1.34, [ZrO.sub.2] 3.43, [Nb.sub.2][O.sub.5] 12.13, [Ta.sub.2][O.sub.5] 0.63, [H.sub.2]O 2.48, F0.14, sum 95.91, less O = F 0.06, Total 95.85 wt.%. Empirical formula: [(K.sub.1.84][Rb.sub.0.13][Cs.sub.0.01]).sub.[sigma]1.98][Na.sub.0.95 ]-[(Mn.sub.5.40][Zn.sub.0.73][Fe.sub.0.53][Na.sub.0.28][Mg.sub.0.05). sub.[sigma]6.99] [(Nb.sub.1.33][Zr.sub.0.40][Ta.sub.0.04]).sub.[sigma]2.01] [([Si.sub.7.71]-[Al.sub.0.33]).sub.[sigma]8.03] [O.sub.26.00] [(OH).sub.4.00] [([O.sub.0.89][F.sub.0.11]).sub.[sigma]1.00]. Relationship to other species: It is a member of the astrophyllite group, specifically the K-Mn-Nb-dominant member.

Name: For the relationship to kupletskite. Comments: IMA No. 1999-032.

PULONEN, P. C., LALONDE, A. E., McDONALD, A. M., and GAULT, R. A. (2000) Niobokupletskite, a new astrophyllite-group mineral from Mont Saint-Hilaire, Quebec, Canada: description and crystal structure. Canadian Mineralogist 38, 627-639.

Obertiite Monoclinic

Na[Na.sub.2]([Mg.sub.3][Fe.sup.3+][Ti.sup.4+])[Si.sub.8][O.sub.22][O. sub.2]

Locality: The Bellerberg quarry, Laacher See district, Eifel region, Germany.

Occurrence: In cavities with basaltic flows. Associated minerals are: tridymite, fluororichterite, hematite, rutile, aegirine-augite, kinoshitalite and fluorapatite.

General appearance: Elongated blades (up to 10 x 40 x 200 [micro]m) and divergent aggregates.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: presumably transparent to translucent. Color: pale pink. Streak: white. Luminescence: nonfluorescent. Hardness: 5. Tenacity: brittle. Cleavage: {110} perfect. Fracture: conchoidal. Density: could not be measured, 3.17 g/[cm.sum.3] (calc.). Crystallography: Monoclinic, C2/m, a 9.776, b 17.919, c 5.292 A, [beta] 104.05[degrees], V 899.3 [A.sup.3], Z 2, a:b:c = 0.5456:1:0.2953. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 8.414 (10) (110), 4.467 (5) (040), 3.39 (6) (131), 3.117 (5) (310), 2.705 (7) (331, 151), 2.531 (5) (202). Optical data: Biaxial (-), [alpha] 1.643, [beta] 1.657, [gamma] 1.670, 2V(meas.) 81[degrees], 2V(calc.) 87[degrees] (given as 93[degrees]); dispersion not visible; pleochroism slight in shades of pink to red-orange, absorption X [sim] Y [sim] Z; X [wedge] a = 2[degrees] (in obtuse angle [beta]), Y [wedge] c = 12[degrees] (in obtuse angle [beta]), Z = b. Chemical analyti cal data: Means of ten sets of electron microprobe data: [Li.sup.2]O 0.05, [Na.sub.2]O 9.51, [K.sub.2]O 0.98, MgO 14.13, CaO 0.52, FeO 3.36, ZnO 0.08, [Al.sub.2][O.sub.3] 0.15, [Mn.sub.2][O.sub.3] 3.27, [Fe.sub.2][O.sub.3] 2.61, [SiO.sub.2] 54.53, [TiO.sub.2] 7.75, [H.sub.2]O 0.20, F 0.55, sum 97.69, less O = F 0.23, Total 97.46 wt.%. The [Mn.sup.3+]:[Mn.sup.2+] and [Fe.sup.3+]:[Fe.sup.2+] ratios are not known so calculations were carried out expressing all manganese as [Mn.sup.3+] and also as [Mn.sup.2+]. [Fe.sup.3+] and [Fe.sup.2+] were adjusted for each of these assumed valence states of manganese and the site occupancies are based on the crystal structure refinement. The empirical formula derived in this manner is: [([Na.sub.0.82][K.sub.0.18]).sub.[sigma]1.00] [([Na.sub.1.84][Ca.sub.0.08]-[[Fe.sup.2+].sub.0.06]).sub.[sigma]1.98] [([Mg.sub.3.09][Ti.sub.0.86][[Mn.sup.3+].sub.0.37][[Fe.sup.2+].sub.0. 35][[Fe.sup.3+].sub.0.30][Al.sub.0.03]).sub.[sigma]5.00][Si.sub.8.00] [O.sub.22.00][[[O.sub.1.54][F.sub.0.26]-[(OH).sub.0.20]].sub.[sigma]2 .00]. Relationship to other species: It is the second anhydrous member of the amphibole group; the first is ungarttite.

Name: For Dr. Roberta Oberti (1951-), Pavia, Italy, for her contributions to the understanding of the crystal chemistry of the amphibole group. Comments: IMA No. 1998-046.

HAWTHORNE, F. C., COOPER, M. A., GRICE, J. D., and OTTOLINI, L.(2000) A new anhydrous amphibole from the Eifel region, Germany: Description and crystal structure of obertiite, Na[Na.sub.2]([Mg.sub.3][Fe.sup.3+][Ti.sup.4+])[Si.sub.8][O.sub.22][O. sub.2]. American Mineralogist 85, 236-241.

Orlandiite Triclinic

[Pb.sub.3][Cl.sub.4](Se[O.sub.3])*[H.sub.2]O

Locality: The Baccu Locci mine near Villaputzu, Cagliari, at the northern border of the Sarrabus-Gerrei mining region, Sardinia, Italy.

Occurrence: In the oxidation zone of an old lead and arsenic mine. Associated minerals are: a second new selenite, [Pb.sub.4]Cu[Cl.sub.3]-[(Se[O.sub.3]).sub.3](OH), chalcomenite (up to 2 cm long!), atacamite, pseudoboleite, chlorargyrite, olsacherite, mandarinoite, schmiederite, francisite, clausthalite-galena, galena, covellite and arsenopyrite.

General appearance: Elongate tabular crystals (up to 150 [micro]m long).

Physical, chemical and crystallographic properties: Luster: given as vitreous to silky, but the optical data indicate adamantine. Diaphaneity: translucent. Color: colorless to white. Streak: not given but presumably white. Luminescence: nonfluorescent. Hardness: not given. Tenacity: brittle. Cleavage: {010} perfect. Fracture: not given. Density: could not be measured, 5.60 g/[cm.sup.3] (calc.) given as 5.66 g/[cm.sup.3]. Crystallography: Triclinic, P1, a 8.136, b 8.430, c 9.233 A, [alpha] 62.58[degrees], [beta] 71.84[degrees], [gamma]75.13[degrees], V 529.29 [A.sup.3], Z 2, a:b:c = 0.9651:1:1.0953. Morphology: only {010} was mentioned. Twinning: invariably on {010}. X-ray powder diffraction data: 8.090 (36) (001), 4.000 (100) (002), 3.818 (55)(201), 3.731 (44) (122), 3.258(75) (121), 3.188 (75) (201), 2.728 (38) (223), 2.365 (37) (123), 2.103 (40) (142). Optical data: Complete optical data could not be determined because the mineral reacts with liquids of high indices of refraction. Measurement of the Brewster angle gave a value of 1.96 for the mean index of refraction. Chemical analytical data: Means of eight sets of electron microprobe data: FeO 0.42, CuO 0.39, ZnO 0.35, CdO 0.11, PbO 74.18, [SO.sub.2] 0.20, [SeO.sub.2] 12.31, [H.sub.2]O (2.34), Cl 14.35, sum (104.65), less 0 = Cl 3.24, Total (101.41) wt.%. Water was calculated from the structure determination and charge balance. Empirical formula: [([Pb.sub.293][Fe.sub.0.05][Cu.sub.0.04][Zn.sub.0.04][Cd.sub.0.01]).s ub.[sigma]3.07][[Cl.sub.3.57][[(OH).sub.0.55]).sub.[sigma]4.12][[(Se[ O.sub.3]).sub.0.98](S[O.sub.3]).sub.0.03].sub.[sigma]1.01].0.87[H.sub .2]O (See Comments). Relationship to other species: None apparent.

Name: For Prof. Paolo Orlandi (1946-), University of Pisa, in recognition of his contributions to the study of new minerals and mineral occurrences in Italy. Comments: IMA No. 1998-038. No true empirical formula is presented in the paper; the one given here was derived by the abstractor. The ideal or theoretical composition given in the paper as PbO 75.50, Se[O.sub.2] 11.67, Cl 13.73, [H.sub.2]O 2.20, sum 103.10, less 0 = Cl 3.10, Total 100.00 wt.% is incorrect and should be: PbO 73.71, Se[O.sub.2] 12.22, Cl 15.61, [H.sub.2]O 1.98, sum 103.52, less O = Cl 3.52, Total 100.00 wt.%.

CAMPOSTRINI, I., GRAMACCIOLI, C. M., and DEMARTIN, F. (1999) Orlandiite, [Pb.sub.3][Cl.sub.4](Se[O.sub.3]).[H.sub.2]O, a new mineral species, and an associated lead-copper selenite chloride from the Baccu Locci mine, Sardinia, Italy. Canadian Mineralogist 37, 1493-1498.

Potassic-ferrisadanagaite Monoclinic

(K,Na)[Ca.sub.2][([Fe.sup.2+],Mg).sub.3][([Fe.sup.3+],Al).sub.2][[Si. sub.5][Al.sub.3][O.sub.22]][(OH).sub.2]

Locality: Ilmen Mountain, South Urals, Ilmen Nature Reserve, Miass, Chelyabinsk region, Russia.

Occurrence: In the contact zone of the Ilmen alkaline massif as a rock forming mineral in amphibole syenite. Associated minerals are: alkali feldspar, "plagioclase," "garnet," titanite and "apatite."

General appearance: Fine, short prismatic grains (up to 1 mm ) and coarse poikilitic grains (1.5 to 3 mm).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent in small fragments. Color: black. Streak: greenish-gray. Lumninescence: not mentioned. Hardness: 5 1/2 to 6. Tenacity: brittle. Cleavage: {110} perfect. Fracture: uneven to subeonchoidal. Density: 3.44 g/[cm.sup.3] (meas.), 3.40 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/m, a 9.94, b 18.08, c 5.38 A, [beta] 105.5[degrees], V 932 [A.sup.3], Z 2, a:b:c = 0.5498:1:0.2976. Morphology: {110}, {010}, prismatic. Twinning: none observed. X-ray powder diffraction data: 8.44 (90) (110), 3.405 (25) (131), 3.285 (30) (240), 3.145 (100) (310), 2.823 (26) (330), 2.722 (52) (151), 2.606 (27) (061), 2.579 (25) (202), 2.356 (24) (421). Optical data: Biaxial (-), [alpha] 1.696, [beta] 1.712 (calc. here), [gamma] 1.715, 2V(meas.) 45[degrees], dispersion not determined; pleochroism X = brownish yellow, Y = brownish green, Z = bluish green; Y = b, Z [wedge] c = 20[degrees]. Chemical analytical data: Wet chemical analysis gave: [Na.sub.2]O 1.78, [K.sub.2]O 3.20, MgO 2.31, CaO 10.04, MnO 1.83, FeO 16.13, [Al.sub.2][O.sub.3] 18.25, [Fe.sub.2][O.sub.3] 9.25, Si[O.sub.2] 33.24, Ti[O.sub.2] 1.58, [H.sub.2]O 1.30, F 0.80, sum 99.71, less O = F 0.34, Total 99.37 wt.%. Empirical formula: [([K.sub.0.65][Na.sub.0.28]).sub.[sigma]0.93-][([Ca.sub.1.72][Na.sub. 0.27][Mn.sub.0.01).sub.[sigma]2.00][([[Fe.sup.2+].sub.2.16][[Fe.sup.3 +].sub.1.11][Al.sub.0.75][Mg.sub.0.55][Mn.sub.0.24][Ti.sub.0.19]).sub .[sigma]5.00][([Si.sub.5.31-][Al.sub.2.69]).sub.[sigma]8.00][O.sub.22 .00][(OH).sub.1.39][F.sub.0.40][O.sub.0.21]].sub.[sigma]5.00] Relationship to other species: A member of the amphibole group.

Name: Follows the IMA approved nomenclature for the amphibole group. Comments: IMA No. 1997-035. The subscripts of the empirical formula derived here are somewhat different from those given by the authors.

BAZHENOV, A. G., BAZHENOVA, L. F., KRINOVA, T. V., and KHVOROV, P. V. (1999) Potassicferrisadanagaite (K,Na)[Ca.sub.2-][([Fe.sup.2+],Mg).sub.3][([Fe.sup.3+],Al).sub.2][[Si .sub.5][Al.sub.3][O.sub.22][(OH).sub.2], a new mineral species of the amphibole group (Ilmen Mountain, the South Urals). Zapiski Vserossiyskogo mnineralogicheskogo obshchestva 128(4), 50- 55.

Remondite-(La) Monoclinic

[Na.sub.3][(La,Ce,Ca).sub.3][([CO.sub.3]).sub.5]

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

Occurrence: In the aegirine core of a small hyperagpaitic pegmatite. Associated minerals are: cancrisilite, microcline, sodalite, villiaumite, natrolite, pectolite, lomonosovite, barytolaniprophyllite, catapleiite, natron, thermonatrite, sazykinaite-(Y), "Nbrinkite," vitusite-(Ce) and fluorcaphite.

General appearance: Rough prismatic segregations (up to 2 x 0.8 x 0.5 mm) made up of tiny (up to 5 pm) irregular grains.

Physical, chemical amid crystallographic properties: Luster: vitreous. Diaphaneity: translucent. Color: bright orange yellow. Srreak: white. Lumninescence: nonfluorescent. Hardness: [sim]3. Tenacity: brittle. Cleavage: none. Fracture: conchoidal. Density: 3.5 g/[cm.sup.3] (incas.), 3.56 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, [P2.sub.1] (?), a 10.49, b 6.417, c 10.50 A, [beta] 119.8[degrees], V613 [A.sup.3], Z 2,a:b:c= 1.6347:1:1.6363. Morphology: no forms were observed. Twinning: none observed. X-ray powder diffraction data: 5.28 (5) (101, 011, 201, 110), 3.70 (7) (012), 3.036 (9) (211, 311), 2.740 (5) (310, 121), 2.623 (10) (204, 022, 402, 220), 2.143 (8) (014, 410), 2.041 (6) (222), 1.985 (5) (401, 215), 1.939 (6) (032, 230). Optical data: Biaxial (-), [alpha] 1.615, [beta] 1.619, [gamma] 1.622, 2V(meas.) 80[degrees], 2V(calc.) 82[degrees]; dispersion not observed; nonpleochroic; orientation not given. Chemical analytical data: Means of eleven sets of electron microprobe data: [Na.sub.2]O 15.48, [K.sub.2]O 0.58, CaO 5.13, SrO 2.93, BaO 0.18, [La.sub.2][O.sub.3] 19.75, [Ce.sub.2][O.sub.3] 16.67, [Pr.sub.2][O.sub.3] 0.99, [Nd.sub.2][O.sub.3] 2.27, [Sm.sub.2][O.sub.3] 0.37, [CO.sub.2] 32.97, Th[O.sub.2] 1.34, Total 98.66 wt.%. Empirical formula: [Na.sub.3.00][([La.sub.0.81][Ce.sub.0.68][Ca.sub.0.61][Na.sub.0.33][S r.sub.0.19][Nd.sub.0.09][K.sub.0.08][Pr.sub.0.04][Th.sub.0.03][Sm.sub .0.01][Ba.sub.0.01]).sub.[sigma]2.88][([CO.sub.3]).sub.4.99]. Relationship to other species: The La-dominant analogue of remondite-(Ce).

Name: For the relationship with remondite-(Ce). Comments: IMA No. 1999-006. The subscripts derived here for the empirical formula are somewhat different to those given in the paper.

PEKOV, I. V., CHUKANOV, N. V., KONONKOVA, N. N., ZADOV, A. E., and BELOVITSKAYA, Yu. V. (2000) Remondite-(La), [Na.sub.3][(La,Ce,Ca).sub.3][([CO.sub.3]).sub.5]--a new mineral of the burbankite family from Khibiny Massif, Kola Peninsula. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva 129(1), 53-60.

Scainite Monoclinic

[Pb.sub.14][Sb.sub.30][S.sub.54][O.sub.5]

Locality: The Buca della Vena mine, southern Apuan Alps, near Pietrasanta, northern Tuscany, Italy (Lat. 43[degrees]59'55" N, Long. 2[degrees]09'31" E) at an altitude of 479 meters.

Occurrence: In calcite veins which cut an iron and barium ore body. Associated minerals are: zinkenite, boulangerite, robinsonite, tintinaite, sorbyite, a new chloro-sulfosalt, sphalerite, cinnabar, galena, andorite, bournonite, tetrahedrite, chalcostibite, gersdorffite, barite, cerussite and stibiconite.

General appearance: Acicular crystals (up to 2 mm long and 0.2 mm thick).

Physical, chemical and crystallographic properties: Luster: metallic. Diaphaneity: opaque. Color: black with a bluish superficial coating due to alteration. Streak: not given, but probably black. Hardness: [VHN.sub.20] 192 kg/[mm.sup.2]. Tenacity: brittle. Cleavage: not mentioned. Fracture: irregular. Density: could not be determined, 5.70 g/[cm.sup.3] (calc.) (given as 5.56 g/[cm.sup.3] by the authors). Crystallography: Monoclinic, C2/m, a 51.996, b 8.148, c 24.311 A, [beta] 104.09[degrees], V 9991 [A.sup.3], Z 4, a:b:c = 6.3819:1:2.9836. Morphology: no forms were identified; habit acicular on [010]. Twinning: none mentioned. X-ray powder diffraction data: 3.472 (100) (14.04), 3.441 (18) (10.04), 3.041 (35) (408), 2.956 (54) (12.21, 12.22, 10.2.2), 2.827 (20) (626, 026, 12.24), 2.28 (22) (829), 2.052 (46) (8.0.10, 14.08, 24.01). Optical data: In reflected light: grayish white, low anisotropism, low bireflectance, nonpleochroic, rare red internal reflections. R & [[blank].sup.im]R: (37.3, 19.9 %) 470nm, (35.5 , 19.2 %) 546nm, (34.4, 18.3 %) 589nm, (32.8, 16.5 %) 650nm. Chemical analytical data: Means of ten sets of electron microprobe data: Pb 36.99, Sb 41.80, S 20.39, O 0.65, Total 99.83 wt.%. Empirical formula: [Pb.sub.15.34][Sb.sub.29.51][S.sub.54.66][O.sub.3.49]. Relationship to other species: Among lead sulfosalts, scainite belongs to the zinkenite group of cyclically twinned structures and their derivatives.

Name: For Dr. Giuseppe Scaini (1906-1988), engineer and skilful investigator of systematic and Italian mineralogy. Comments: IMA No. 1996-014A. Franco Jarno, an amateur mineralogist from the Gruppo Ricerche Geologiche di Prato, provided the first specimens for this study.

ORLANDI, P., MOELO, Y., MEERSCHAUT, A., and PALVADEAU, P. (1999) Lead-antimony sulfosalts from Tuscany (Italy). I. Scainite, [Pb.sub.14][Sb.sub.30][S.sub.54][O.sub.5], the first Pb-Sb oxy-sulfosalt, from Buca della Vena mine. European Journal of Mineralogy 11, 949-954.

Serrabrancaite Monoclinic

MnP[O.sub.4].[H.sub.2]O

Locality: The Alto Serra Branca pegmatite, approximately 10 km southwest of the village of Pedra Lavrada, Paraiba, Brazil.

Occurrence: In a granitic pegmatite intruded into biotite schist. Minerals in the pegmatite are: quartz, microcline, muscovite, albite, amblygonite, "apatite," beryl, uraninite, elbaite, members of the tantalite group, secondary uranium minerals, triphylite, triplite, purpurite, rockbridgeite, tavorite, barbosalite, hureaulite, eosphorite, phosphosiderite, carlhintzeite, colquirite, pachnolite, ralstonite and fluellite. Serrabrancaite is an alteration product of triplite and is closely associated with vernadite.

General appearance: Equant or short prismatic crystals (up to 0.3 mm).

Physical, chemical and crystallographic properties: Luster: adamantine. Diaphaneity: translucent in thin fragments. Color: dark brown to dark greenish black. Streak: olive green. Luminescence: not mentioned. Hardness: 3 1/2. Tenacity: brittle. Cleavage: none discernible. Fracture: uneven. Density: 3.17 g/[cm.sup.3] (meas.), 3.19 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/c, a 6.914, b 7.468, c 7.364 A, [beta] 112.29[degrees], V 351.8 [A.sup.3], Z 4, a:b:c = 0.9258:1:0.9861. Morphology: no forms were mentioned but some are visible in the SEM images. Twinning: none mentioned. X-ray powder diffraction data: 4.856 (12) (110), 4.633 (15) (111), 3.503 (100) (111), 3.271 (10) (021), 2.957 (10) (202), 2.516 (19) (022), 2.104 (12) (221). Optical data: Biaxial (sign not given), [alpha] 1.75, [beta] 1.79, [gamma] [greater than] 1.79, 2V not measured, pleochroism from dark brown to olive greenish-brown. Chemical analytical data: Means of four sets of electron microprobe data: [Mn.sub.2][O.sub.3] 46.85, [P.sub.2][O.sub.5] 42.72, [H.sub.2]O 9.80, Total 99.37 wt.%. [H.sub.2]O by TGA. Empirical formula: [Mn.sub.1.01][P.sub.1.02][O.sub.4.06].0.92[H.sub.2]O. Relationship to other species: Structurally related to synthetic MnP[O.sub.4].[H.sub.2]O and MnAs[O.sub.4].[H.sub.2]O and to members of the kieserite group.

Name: For the locality. Comments: IMA No. 1998-006.

WITZKE, T., WEGNER, R., DOERING, T., POLLMANN, H., and SCHUCKMANN, W. (2000) Serrabrancaite, MnP[O.sub.4].[H.sub.2]O, a new mineral from the Alto Serra Branca pegmatite, Pedra Lavrada, Paraiba, Brazil. American Mineralogist 85, 847-849.

Sodic-ferripedrizite Monoclinic

Na(LiNa)([[Fe.sup.3+].sub.2][Mg.sub.2]Li)[Si.sub.8][O.sub.22][(OH).su b.2]

Locality: In the Arroyo de la Yedra, Eastern Pedriza Massif, Sierra de Guadarrama, Central System, Spain. The locality is about 20 m east of the occurrence of sodic-ferri-clinoferroholmquistite (see abstract in Mineralogical Record 30, 325).

Occurrence: In hydrothermal episyenites. Associated minerals are: albite, pyroxenes, Li-amphiboles and micas.

General appearance: Granular aggregates of subhedral crystals of mean size 0.18 x 0.10 mm.

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: semitranslucent. Color: green. Streak: gray. Luminescence: nonfluorescent. Hardness: [sim] 6. Tenacity: brittle. Cleavage: {110} perfect; parting {001} poor. Fracture: splintery. Density: 3.15 g/[cm.sup.3] (meas.), 3.15 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, C2/m, a 9.536, b 17.789, c 5.277 A, [beta] 102.53[degrees], V 873.8 [A.sup.3] Z 2, a:b:c = 0.5361:1:0.2966. Morphology: {010} and {001} are observed and {100} is rare and poorly developed; prismatic and elongated on [001]. Twinning: none mentioned. X-ray powder diffraction data: 8.246 (24) (110), 4.446 (22) (040), 3.397 (28) (131), 3.056 (100) (310), 2.749 (54) (330), 2.699 (60) (151), 1.920 (20) (421), 1.639 (44) (461), 1.396 (23) (661). Optical data: Biaxial (-) (given as +), [alpha] 1.694, [beta] 1.698, [gamma] 1.702, 2V(meas.) 83[degrees], 2V(calc.) 89.8[degrees] (given as 83[degrees]); dispersion r [greater than] v, medium; pleochroism strong, X = green bl ue, Y = blue green, Z = yellow green, absorption X [greater than] Y [greater than] Z; Y = b, X [wedge] c = 4[degrees], Z [wedge] a = 8[degrees] (both in obtuse angle [beta]). Chemical analytical data: Means of twenty-four sets of electron microprobe data: [Li.sub.2]O 3.98, [Na.sub.2]O 4.78, [K.sub.2]O 0.15, MgO 8.45, CaO 0.56, MnO 0.58, FeO 2.79, ZnO 0.12, [Al.sub.2][O.sub.3] 1.26, [Fe.sub.2][O.sub.3] 15.81, Si[O.sub.2] 57.70, Ti[O.sub.2] 1.04, [H.sub.2]O (1.46), F 1.48, sum (100.16), less O = F 0.62, Total (99.54) wt.%. [Li.sub.2]O was determined by flame photometry and [H.sub.2]O was calculated to give OH + F = 2. Empirical formula: [([Na.sub.0.70][K.sub.0.03]).sub.[sigma]0.73][([Li.sub.1.34]-[Na.sub. 0.58][Ca.sub.0.08]).sub.[sigma]2.00][([Mg.sub.1.75][[Fe.sup.3+].sub.1 .65][Li.sub.0.88][[Fe.sup.2+].sub.0.32][Al.sub.0.21][Ti.sub.0.11][[Mn .sup.2+].sub.0.07][Zn.sub.0.01]).[sigma]5.00][Si.sub.8.00]-[O.sub.22. 00[[[OH.sub.1.35][F.sub.0.65]].sub.[sigma]2.00]. Relationship to other species: It is a new member of the amphibole group.

Name: For the locality. Because of its chemical composition it requires a new root name, pedrizite; the prefixes "sodic" and "ferri" are required by the amphibole classification. Comments: IMA No. 1998-061.

OBERTI, R., CABALLERO, J. M., OTTOLINI, L., LOPEZANDRES, S., and HERREROS, V. (2000) Sodic-ferripedrizite, a new monoclinic amphibole bridging the magnesium-iron-manganese-lithium and the sodium-calcium groups. American Mineralogist 85, 576-585.

Springcreekite Trigonal

Ba[[V.sup.3+].sub.3][([PO.sub.4])].sub.2][(OH,[H.sub.2]O).sub.6]

Locality: The dumps of the Spring Creek copper mine near Wilmington, southern Flinders Ranges, South Australia, Australia.

Occurrence: In a cavity in brecciated quartz-goethite rock. Associated minerals in the type specimen are: quartz, fluorapatite, copper, whitlockite, barite, an unidentified Ca-Fe-phosphate (probably mitridatite) and bariosincosite. A cotype specimen contains: cuprite, copper, quartz, mitridatite and fluorapatite.

General appearance: Pseudocubic rhombohedra (between 0.05 and 0.1 mm).

Physical, chemical and crystallographic properties: Luster: dull to vitreous. Diaphaneity: opaque. Color: black. Streak: brownish black. Luminescence: nonfluorescent. Hardness: approximately 4 to 5. Tenacity: brittle. Cleavage: {102} poor (may be a parting). Fracture: irregular. Density: 3.48 g/[cm.sup.3] (meas.), 3.55 g/[cm.sup.3] (calc.). Crystallography: Trigonal, R3m, a 7.258, c 17.361 A, V 792.0 [A.sup.3], Z 3, c:a = 2.3920. Morphology: only {102} was observed. Twinning: none mentioned. X-ray powder diffraction data: 5.90 (9) (101), 3.627 (4) (110), 3.073 (10) (113), 2.301 (4) (107, 122), 1.971 (5) (033), 1.814 (4) (220). Optical data: Uniaxial (-), [omega] to 1.858, [epsilon] 1.817, pleochroism very strong, O = blackish brown to black, E = pale brownish to brownish, absorption O [greater than] E. Chemical analytical data: Means of four sets of electron microprobe data for the type specimen: [Na.sub.2]O 0.08, CaO 0.15, CuO 0.17, ZnO 0.14, BaO 23.34, SrO 0.27, [Al.sub.2][O.sub.3] 0.32, [Fe.sub.2][O.sub.3] 15.02, [V.sub.2][O.sub.3] 19.44, Si[O.sub.2] 0.12, [P.sub.2][O.sub.5] 23.26, [H.sub.2]O (12.16), F 0.21, sum (94.76), less O = F 0.09, Total (94.67) wt.%. [H.sub.2]O calculated. Empirical formula: [([Ba.sub.0.91][Ca.sub.0.02]-[Sr.sub.0.22][Na.sub.0.02]).sub.[sigma]0 .97] [([[V.sup.3+].sub.1.55][[Fe.sup.3+].sub.1.12][Al.sub.0.04][Cu.sub.0.0 1][Zn.sub.0.01]).sub.[sigma]2.73][[([PO.sub.4]).sub.1.86][(Si[O.sub.4 ]).sub.0.02]][[(OH).sub.4.36]-[([H.sub.2]O).sub.1.84][F.sub.0.07]].su b.[sigma]6.27]. Relationship to other species: A member of the crandallite group.

Name: For the locality. Comments: IMA No. 1998-048.

KOLITSCH, U., TAYLOR, M. R., FALLON, G. D., and PRING, A. (1999) Springcreekite, Ba[[V.sup.3+].sub.3][([PO.sub.4]).sub.2][(OH,[H.sub.2]O].sub.6], a new member of the crandallite group, from the Spring Creek mine, South Australia: the first natural [V.sup.3+]- of the alunite family and its crystal structure. Neues Jahrbuch fur Mineralogie, Monatshefte 1999, 529-544.

Stoppaniite Hexagonal

[[Fe.sup.3+].sub.3](Mg,[Fe.sup.2+])Na([Be.sub.6][Si.sub.12][O.sub.36] ).2[H.sub.2]O

Locality: The Vico Volcanic District, north of Rome, at Capranica (Viterbo), Latium, Italy.

Occurrence: In ejectum from an explosive breccia belonging to the "C" pyroclastic flow unit. Associated minerals are: biotite, quartz, sanidine, hematite, danburite, helvite, hellandite, allanite-(Ce) and a not yet completely characterized gadolinite-like mineral.

General appearance: Prismatic euhedral crystals (up to 0.5 mm long).

Physical, chemical and crystallographic properties: Luster: vitreous. Diaphaneity: transparent. Color: light blue. Streak: white. Luminescence: not mentioned, but probably nonfluorescent. Hardness: not given, but probably about 7 or 8 by analogy with beryl and bazzite. Tenacity: probably brittle. Cleavage: {001} parting. Fracture: probably conchoidal. Density: 2.79 g/[cm.sup.3] (meas.), 2.85 g/[cm.sup.3] (calc.). Crystallography: Hexagonal, P6/mcc, a 9.397, c 9.202 A, V 703.7 [A.sup.3], Z 1, c:a = 0.9792. Morphology: no forms were mentioned, but {001} and {100} appear to be present according to the photograph in the paper. Twinning: none mentioned. X-ray powder diffraction data: 8.12 (65) (010), 4.00 (38) (012), 3.278 (100) (112), 2.903 (64) (121), 2.553 (18) (122), 1.752 (18) (034). Some of the indexing here differs from that given in the paper. Optical data: Uniaxial (-), [omega] to 1.625, [epsilon] 1.619, pleochroism weak from colorless to very light blue. Chemical analytical data: Means of nineteen sets of electron microprobe data: [Na.sub.2]O 2.47, [K.sub.2]O 0.08, [Cs.sub.2]O 0.19, BeO 14.59, MgO 2.21, MnO 0.41, [Al.sub.2][O.sub.3] 1.80, [Sc.sub.2][O.sub.3] 0.08, [Fe.sub.2][O.sub.3] 18.36, Si[O.sub.2] 59.13, Ti[O.sub.2] 0.11, Sn[O.sub.2] 0.03, [H.sub.2]O 2.98, Total 102.44 wt.%. Empirical formula: [([[Fe.sup.3+].sub.2.71][Mg.sub.0.65][Al.sub.0.42][Mn.sub.0.07][Ti.su b.0.02]-[Sc.sub.0.01]).sub.[sigma]3.88][Be.sub.6.00][([Si.sub.11.61][ Be.sub.0.88]).sub.[sigma]12.49][([Na.sub.0.94][K.sub.0.02][Cs.sub.0.0 2]).sub.[sigma]0.98][O.sub.36.05].1.95[H.sub.2]O. Relationship to other species: A member of the beryl group.

Name: For Dr. Francesco Saverio Stoppani (1947-), a distinguished amateur mineralogist active in the volcanic regions of Latium. Comments: IMA No. 1996-008. Note that the crystal structure has been solved.

DELLA VENTURA, G., ROSSI, P., PARODI, G. C., MOTTANA, A., RAUDSEPP, M., and PRENCIPE, M. (2000) Stoppaniite, [(Fe,Al,Mg).sub.4][([Be.sub.6][Si.sub.12][O.sub.36])*[([H.sub.2]O).su b.2](Na,[square]) a new mineral of the beryl group from Latium (Italy). European Journal of Mineralogy 12, 121-127. FERRARIS, G., PRENCIPE, M., and ROSSI, P. (1998) Stopanniite, a new member of the beryl group: crystal structure and crystal-chemical implications. European Journal of Mineralogy 10, 491-496.

Strontiomelane Monoclinic

Sr[[Mn.sup.4+].sub.6][[Mn.sup.3+].sub.2][O.sub.16]

Locality: The Praborna manganese mine, 5 km south of the village of Saint-Marcel, in a lateral valley of Val d'Aosta, Italy.

Occurrence: In manganese-enriched horizons in a quartzitic layer. Associated minerals are: braunite, quartz, the "violan" variety of diopside-aegirine-jadeite, strontiopiemontite, hollandite, cryptomelane, jadeite, antimony-bearing titanite and arsenic-bearing titanite and arsenic-bearing fluorapatite.

General appearance: Thin (100 to 200 [micro]m) elongate inclusions.

Physical, chemical and crystallographic properties: Luster: submetallic. Diaphaneity: opaque. Color: black. Streak: sepia. Hardness: [VHN.sub.100] 398 kg/[mm.sup.2]. Tenacity: brittle. Cleavage: rarely observed. Fracture: not stated. Density: could not be measured, 4.66 g/[cm.sup.3] (calc.). Crystallography: Monoclinic, [P2.sub.1]/n, a 10.00, b 5.758, c 9.88 A, [beta] 90.64[degrees], V 568.85 [A.sup.3], Z 2, a:b:c = 1.7367:1:1.7159. Morphology: no forms were observed. Twinning: none mentioned. X-ray powder diffraction data: 3.15 (100) (103), 3.13 (80) (103), 2.409 (80) (122), 2.170 (60) (320), 1.556 (50) (225). Optical data: In reflected light: gray, moderate anisotropism with gray-blue to white tints, bireflectance not mentioned, strong gray-white pleochroism. [R.sub.max] & [R.sub.min]: (34.2, 26.0 %) 470 nm, (31.7, 24.4 %) 543 nm, (30.6, 23.4 %) 587 nm, (29.7, 22.3 %) 657 nm. Chemical analytical data: Six sets of electron microprobe data are given; that with the highest amount of strontium gave: [Na.sub.2]O 0.17, [K.sub.2]O 0.83, BaO 1.39, SrO 12.77, [Fe.sub.2][O.sub.3] 6.27, [Mn.sub.2][O.sub.3] 16.51, Si[O.sub.2] 0.45, Ti[O.sub.2] 0.70, Mn[O.sub.2] 58.71, Total 97.80 wt.%. Empirical formula: [([Sr.sub.1.01] [K.sub.0.14] [Ba.sub.0.07] [Na.sub.0.04]).sub.[sigma]2.00]. Relationship to other species: It is the strontium-dominant analogue of cryptomelane.

Name: For the relationship to cryptomelane. Comments: IMA No. 1995-005.

MEISSER, N., PERSEIL, E.-A., BRUGGER, J., and CHIAPPERO, P.-J. (1999) Strontiomelane, Sr[[Mn.sup.4+].sub.6][[Mn.sup.3+].sub.2][O.sub.16], a new mineral species of the cryptomelane group from St. Marcel-Praborna, Aosta Valley, Italy. Canadian Mineralogist 37, 673-678.

Suredaite Orthorhombic

PbSn[S.sub.3]

Locality: The Oploca vein system of the Pirquita silver-tin deposit, in the Puna, 135 km west of Abra Pampa, Province of Jujuy, northwestern Argentina.

Occurrence: In a vein. Associated minerals are: franckeite, cylindrite, hocartite, rhodostannite and sphalerite. Minor amounts of Ag-Bi sulfosalts belonging to the andorite group, lillianite as well as pavonite homologous series.

General appearance: It has an overall similarity to teallite. As layers (up to 1 cm thick) composed of tabular prismatic crystals elongated along [010] and as individual euhedral almost needle-like crystals.

Physical, chemical and crystallographic properties: Luster: metallic. Diaphaneity: opaque. Color: grayish-black. Streak: black. Hardness: [VHN.sub.50] 19.6 (range 18.2 to 20.6) kg/m[m.sup.2], Mohs 2 1/2 to 3. Tenacity: not given. Cleavage: {001}, {101} and {100} perfect. Fracture: not given. Density: 5.54 to 5.88 g/[cm.sup.3] (meas.), 5.66 g/[cm.sup.3] (calc.). Crystallography: Orthorhombic, Pnma, a 8.8221, b 3.7728, c 14.0076 A, V 466.23 [A.sup.3], Z 4, a:b:c = 2.3383:1:3.7128. Morphology: no forms were mentioned. Twinning: none mentioned. X-ray powder diffraction data: 5.483 (26.4) (102), 4.128 (100.0) (103), 3.730 (30.0) (202), 3.1085 (27.6) (112), 2.8081 (50.8) (211), 2.7421 (40.9) (204), 1.9335 (53.5) (314), 1.6316 (38.9) (124), 1.3754 (26.5) (309). Optical data: In reflected light: white, anisotropic metallic blue to mauve to brown, nonbireflectant, nonpleochroic. [R.sub.1] & [R.sub.2]: (34.3, 36.3 %) 460nm, (31.5, 33.1 %) 540nm, (30.3, 31.7 %) 580nm, (29.0, 30.2 %) 640nm. Chemical analytical data: Four sets of electron microprobe data are given. The means of 61 analyses of one of these sets are: Fe 0.77, As 1.41, Ag 0.80, Sn 30.12, Pb 42.27, 5 24.23, Total 99.60 wt.%. Empirical formula: [([Pb.sub.0.81][As.sub.0.08][Ag.sub.0.03][Sn.sub.0.06]).sub.[sigma]0. 98] [([Sn.sub.0.95][Fe.sub.0.05]).sub.[sigma]1.00 - [S.sub.3.01]. Relationship to other species: It is the natural analogue of synthetic PbSn[S.sub.3].

Name: For Ricardo Jose Sureda Leston (1946-), Professor and Head of the Department of Mineralogy and Economic Geology, University of Salta, Argentina, in recognition of his significant contributions to the mineralogy and metallogeny of NW Argentina. Comments: IMA No. 1997-043.

PAAR, W. H., MILETICH, R., DAN TOPA, CRIDDLE, A. J., DE BRODTKORB, M. K., AMTHAUER, G., and TIPPELT, G. (2000) Suredaite, PbSn[S.sub.3], a new mineral species, from the Pirquitas Ag-Sn deposit, NW-Argentina: mineralogy and crystal structure. American Mineralogist 85, 1066-1075.
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Author:Mandarino, J. A.
Publication:The Mineralogical Record
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Date:May 1, 2001
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