American Mineralogist, Volume 81, pages 516-520, 1996 NEW MINERAL NAMES* JOHN L. JAMBOR,l NIKOLAI N. PERTSEV,2 ANDANDREW C. ROBERTS3 ID2epartment of Earth Sciences, University of Waterloo, Waterloo, Ontario N2L 3Gl, Canada I?REM ~N, Russian Academy of Sciences, Moscow 10917, Staromonetnii 35, Russia Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario KIA OGl, Canada Altisite* Chengdeite* AP. Khomyakov, G.H. Nechelyustov, G. Ferraris, G. Zuxiang Yu (1995) Chengdeite-ordered natural iron- Ivaldi (1995) Altisite Na3K,;Ti2A12Sis026C13,a new iridium alloy. Acta Geol. Sinica, 69(3) 215-220 (in mineral. Zapiski Vseross. Mineral. Obshch., 123(6),90- Chinese, English abs.). ' 95 (in Russian). G. Ferraris, G. Ivaldi, AP. Khomyakov (1995) Altisite The mean and range of 13 electron microprobe anal- Na3K,;Ti2[A12Sis026]C13a new hyperalkaline alumino- yses gave Fe 7.9 (6.4-8.4), Ni 0.03 (0.00-0.08), Co 0.03 silicate from Kola Peninsula (Russia) related to le- (0.00-0.08), Cu 0.83 (0.76-0.91), Rh 0.19 (0.07-0.34), moynite: Crystal structure and thermal evolution. Eur. Pd 0.00 (0.00-0.04), Os 0.06 (0.00-0.22), Ir 88.5 (86.5- J. Mineral., 7, 537-546. 92.3), Pt 2.2 (0.1-3.6), S 0.001 (0.000-0.008), As 0.02 The mineral occurs as irregular, colorless grains to 3 ~0.00-0.15), sum 99.76 (99.30-100.06) wt%, correspond- mm in pegmatite in the southeastern part of the Khibiny mg to (Ir 2.926Plo.o72Rho.o120so.oo2)~3.o12 (Feo.s99CUo.os3Nio.oo3- massif, Kola Peninsula, Russia. Electron microprobe CUo.003)~O.9SS'ideally Ir3Fe. Occurs as grains to 0.5 mm analysis of three grains gave Na20 9.3, K20 20.7, BaO associated with inaglyite, to 0.5 mm in graphic inter- 1.0, Al203 8.7, Si02 40.3, Zr02 0.1, Ti02 13.1, Nb20S 0.5, growths with iridium, and to 20 /-Lmin association with C18.6,0 Cl1.9, sum 100.4 wt%, corresponding to Na3- (Fe,Ni,Cu)2IrS3' Steel-black color, metallic luster, black == streak, H = 5, VHNso = 452 (411-467), malleable, strongly (Ks.23 Na0.57 Bao.os) (Ti1.9s Nbo.o4 ZrO.01) A12.o3 Si7.9s 026.10 C12.s9. magnetic, Deale Vitreous luster, H = 6, conchoidal fracture, no cleavage, = 19.19 glcm3for Z = 1. Bright white with a yellowish tint in reflected light, no bireflectance or nonfluorescent, unreactive with 10% HCl or HN03 at pleochroism, isotropic. Reflectance percentages (WTiC room temperature, Dme.. = 2.64(2), Deale= 2.67 glcm3 for 1.601(2), (1 standard, air) are given in 10 nm steps from 400 to 700 Z = 2. Optically biaxial positive, a = = nm; representative values are 61.7 (400), 66.2 (470), 69.1 1.625(2), 1.654(2), 2 Vmeas= 85(1), 2 l' = v"ale= 86°. The (540),69.5 (550), 71.1 (590), 72.5 (650), and 72.8 (700). IR spectrum has strong absorption effects at 488, 520, Strongest lines of the X-ray powder pattern (FeKa radi- 577,590,930, and 995 cm-I. TGA showed steps at 250- ation) are 2.18(80, Ill), 1.89(60,200), 1.34(70,220), 300 and 800-900 °C, with total loss 2.5 wt% to 1000°C. 1.142(100,311), and 1.094 A (80,222); by analogy with Turns bright light blue on heating to 600°C, without isoferroplatinum, which is the Pt analog, cubic symme- change in optical or X-ray properties. Single-crystal X-ray try, space group Pm3m, a = 3.792(5). structure study (R = 0.025) showed monoclinic symme- try, space group C2/m; a = 10.37(1), b = 16.32(3), c = The new mineral is associated with other PGM in plac- er concentrates from a branch of the Luanhe River in 9.16(2) A, {1 = 105.6(2t from an X-ray powder pattern Chengde County (hence the new name), about 200 km (114 mm camera, FeKa radiation) with strongest lines of NNE of Beijing; also reported to occur in chromite ore 8.22(71 ,~20):... 3.50(42,221,222), 3.049(100,132,512), in ultramafic rocks. Type material is in the Geological 2.900(71,331,203), and 2.835(84,151). The structure is Museum of China, Beijing. J.L.J. similar to that of lemoynite. The mineral occurs mainly in interstices among pec- tolite grains in pegmatite intersected in an exploratory Frankhawthorneite* drillhole. The pegmatite contains sodalite, nepheline, po- tassium feldspar, pectolite, aegirine, shcherbakovite, ti- AC. Roberts, J.D. Grice, AJ. Criddle, M.C. Jensen, D.C. naksite, arfvedsonite, nefedovite, villiaumite, natrite, and Harris, E.A Moffatt (1995) Frankhawthorneite, Cu2Te6+04(OH)2,a new mineral species from the Cen- rasvumite. The new name alludes to the composition (Al- tennial Eureka mine, Tinctic district, Juab County, Ti-Si). Type material is in the Fersman Mineralogical Utah. Can. Mineral., 33, 641-647. Museum, Moscow, Russia, and in the Regional Museum J.D. Grice, AC. Roberts (1995) Frankhawthorneite a of Natural History, Turin, Italy. N.N.P. unique HCP framework structure of a cupric tellur~te. Can. Mineral., 33, 649-653. The mineral occurs as elongate, green crystals, up to * Before publication, minerals marked with an asterisk were approved by the Commission on New Minerals and Mineral 0.1 mm long, isolated or as groups on drusy quartz in Names, International Mineralogical Association. vugs in waste rock from the Centennial Eureka mine, 0003-004X/96/0304-0516$05.00 516 JAMBOR ET AL.: NEW MINERAL NAMES 517 which ceased production in 1927. Crystals are subhedral (482), 7.1, 6.3 (545), 6.7, 5.8 (589), and 6.6, 5.5 (659). to euhedral, prismatic to stubby bladed, elongate [001], Electron microprobe analysis (mean of six) ~.we CuO showing {OlO}and minor possible {l00} and {Oll}. Leaf- 13.91, Bi203 86.00, sum 99.91 wt%, corresponding to green color, green streak, transparent, vitreous luster, CUo.96oBi2.o2704'Single-crystal X-ray study indicated te- brittle, uneven fracture, nonfluorescent, H = 3-4, Deale= tragonal symmetry, space group P4/ncc, a = 8.511(2), c 5.43 g/cm3 for Z = 2. Pale gray in reflected light, weakly = 5.823(2) A, in good agreement with data for the syn- bireflectant, nonp1eochroic, mean nc&c= 2.00. Electron thetic analog. Strongest lines of the powder pattern are microprobe analysis (average of five) gave CuO 45.20, 4.26(17,200),3.191(100,211),2.913(16,002),2.695(18, Te03 48.77, H20 (calc.) 5.05, sum 99.02 wt%, corre- 310),2.404(13,202), and 1.947(18,411). sponding to CU2.03Te8.t904oo(OH)z. The presence of OH The host calcite vein occurs along the boundary be- was confirmed by IR spectroscopy and by single-crystal tween gehlenite-spurrite skarn and crystalline limestone. X-ray structure study (R = 0.054); the latter indicated The new mineral, thought to be low-temperature hydro- monoclinic symmetry, space group P2/n. Cell dimen- thermal in origin, is associated with henmi1ite, sillenite, sions refined from a 114 mm Debye-Scherrer powder pat- bakerite, tenolite, bulfonteinite, apophyllite, cuspidine, tern (CuKa radiation) are a = 9.095(3), b = 5.206(2), c = and thaumasite. The new name is for I. Kusachi (b. 1942) 4.604(1) A, (3 = 98.69(2)°; strongest lines are 4.337(60, of Okayama University. Type material is in the National TOl), 3.838(50,lOl), 2.891(70,:211), and 2.598(lOO,020, Science Museum, Tokyo, Japan. J.L.J. 3lO,211). The new mineral is associated with mca1pineite and several Cu- and Te-bearing secondary minerals, including Owensite* five unnamed ones. The new name is for F.c. Hawthorne J.H.G. Laflamme, AC. Roberts, AJ. Criddle, L.J. Cabri of the University of Manitoba. Type material is in the (1995) Owensite, (Ba,PbMCu,Fe,Ni)2sS27' a new min- Systematic Reference Series of the National Mineral Col- eral species from the Wellgreen Cu-Ni-Pt-Pd deposit, lection at the Geological Survey of Canada, Ottawa. J.L.J. Yukon. Can. Mineral., 33, 665-670. J.T. Szymanski (1995) The crystal structure of owensite, (Ba,PbMCu,Ni,Fe)2sS27'a new member of the djerfish- Gregoryite* erite group. Can. Mineral., 33, 671-677. A.A Church, A.P. Jones (1995) Silicate-carbonate im- The mineral occurs as anhedral grains, to 43 x 1lO miscibility at Oldoinyo Lengai. J. Petrology, 36(4), 869- ~m, within pyrrhotite associated with magnetite, chal- 889. copyrite, and pentlandite. Electron microprobe analysis (average of nine) gave Ba 23.04, Pb 3.58, Cu 25.33, Fe Five electron-microprobe compositions, predominant- 20.24, Ni 0.25, S 27.11, C1not detected, sum 99.55 wt%, ly representative of microphenocrysts and phenocrysts (to corresponding to (Bas.42Pbo.s6)"S.98(Cu12.87Fel1.7oNio.14),,24.71- 3 mm in diameter), are given for gregoryite (Na,K, S27.31'Opaque, metallic luster, black streak, H 3IJ2, Deale Ca)2C03' = = 4.78 g/cm3 for Z = 1. In reflected light, pale brownish Discussion. The name was introduced in 1980 (Am. gray, tarnishes rapidly, isotropic; reflectance percentages Mineral., 66, p. 879, 1981), was approved by the in air and in oil, given in 20 nm steps from 400 to 700 CNMMN in 1981, and is widely accepted by petrologists, nm, are 22.0, 9.95 (470), 24.9, 12.0 (546), 26.2, 13.0 but a full description seems not to have been published.