American Mineralogist, Volume 82, pages 820±823, 1997 NEW MINERAL NAMES* JOHN L. JAMBOR,1 EDWARD S. GREW,2 AND ANDREW C. ROBERTS3 1Department of Earth Sciences, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada 2Department of Geology, University of Maine, Orono, ME 04469-5711, U.S.A. 3Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0G1, Canada Deloneite-(Ce)* Orthorhombic lamprophyllite A.P. Khomyakov, D.V. Lisitsin, I.M. Kulikova, R.K. O. Johnsen (1996) TEM observations and X-ray powder Rastsvetaeva (1996) Deloneite-(Ce), NaCa2SrCe(PO4)3F, data on lamprophyllite polytypes from Gardiner Com- a new mineral with a belovite-like structure. Zapiski plex, East Greenland. Neues Jahrb. Mineral. Mon., Vseross. Mineral. Obshch., 125(5), 83±94 (in Russian, 407±417. English abs.). Electron diffraction patterns of lamprophyllite from the R.K. Rastsvetaeva, A.P. Khomyakov (1996) Crystal struc- ture of deloneite-(Ce), the highly ordered Ca analog of Gardiner complex showed that, in addition to monoclinic belovite. Doklady Akad. Nauk, 349(3), 354±357 (in (C2/m) lamprophyllite and barytolamprophyllite, an or- Russian). thorhombic polymorph of lamprophyllite is present. Par- tial Rietveld analysis of the orthorhombic mineral gave a Ê Electron microprobe analysis gave Na2O 4.45, K2O 5 19.356(2), b 5 7.1040(2), c 5 5.4083(2) A, space 0.07, CaO 14.77, SrO 18.19, BaO 0.10, La2O3 8.12, group Pnmn. The minerals are designated lamprophyllite- Ce2O3 13.14, Pr2O3 1.13, Nd2O3 3.81, Sm2O3 0.34, Y2O3 2M, lamprophyllite-2O, and barytolamprophyllite-2M. 0.02, ThO2 0.02, SiO2 0.74, P2O5 30.71, F 2.03, H2O J.L.J. (calc) 0.38, O [ F 0.85, sum 97.18 wt%, correspond- ing to (Na1.93K0.02)S1.95(Ca3.54Sr2.36Ba0.01)S5.91(Ce1.08La0.67 Malanite* 2Nd0.30 Pr0.09 Sm0.03)S2.17 (P5.81 Si0.17)S5.98 O24[F1.44 (OH).56]S2.00, ideally NaCa2 SrCe(PO4 )3 F. The mineral occurs as Zuxiang Yu (1996) MalaniteÐA new cupric platinum grains, up to 1.5 mm in size, that are intimately inter- (Pt31 ) and iridium (Ir31 ) sul®de. Acta Geol. Sinica, grown with belovite and an apatite-like mineral rich in 70(4), 309±314 (in Chinese, English abs.). Sr and REE. Bright yellow color, transparent, vitreous The mean and range of ®ve electron microprobe anal- luster, white streak, brittle, step-like fracture, H 5 5, yses of grains from a magmatic Ni-Cu sul®de ore, and {1010} and {0001} cleavages, Dmeas 5 3.92(5), Dcalc 5 six analyses of grains from placer concentrates gave, re- 3.95 g/cm3 for Z 5 2. Optically uniaxial negative, e5 spectively, S 23.8 (23.2±24.2), 22.6 (21.9±23.3), Fe 0.6 1.660(2), v51.682(2). Readily soluble in 10% HCl (0.2±0.9), 0.7 (0.3±1.1), Co 2.21 (1.73±2.74), 1.1 (0.7± or HNO3 at room temperature. Strongest absorption 1.5), Ni 0.3 (0.1±0.5), ±, Cu 10.9 (10.1±11.8), 10.7 bands in the infrared spectrum are at 1164, 1098, 1047, (10.2±11.1), Rh 0.7 (0.5±0.9), 1.5 (1.0±2.0), Pd 0.5 1010, and 949 cm21, and weaker bands are at 600, 575, (0.3±0.9), 0.0, Ir 23.2 (22.2±24.0), 15.5 (14.3±17.3), Pt and 547 cm 21. Single-crystal X-ray structure study (R 37.0 (36.4±37.8), 47.4 (45.8±48.9), sum 99.2 (99.1± 5 0.049) indicated trigonal symmetry, space group P3, 99.7), 99.5 (99.0±99.8) wt%, corresponding to Ê a 5 9.51(1), c 5 7.01(1) A . Strongest lines of the (Cu0.93Fe0.06)S0.99 (Pt1.03Ir0.66Rh0.04Pd0.03Co0.21Ni0.03)S2.00S4.03, X-ray powder pattern (57.3 mm camera, FeKa radia- and (Cu0.95Fe0.07) S1.02(Pt1.37Ir0.45Co0.11Rh0.08)S2.01S3.97, ideally tion) are 3.51(30,002), 3.12(40,210), 2.84(100 CuPt2S4. Occurs as euhedral octahedral and dodecahedral broad,211,112), 2.753(40,300), 1.967(30,222), and crystals to 0.2 mm; also as veinlets up to 10 3 200 mm 1.870(30,213). in iridisite. Steel-gray color, metallic luster, opaque, black The mineral occurs in hyperagpaitic pegmatites at the streak, brittle, H 5 5, VHN20 5 417, {111} cleavage, non- 3 Khibina alkaline massif, Kola Peninsula, Russia. The new magnetic, Dcalc 5 7.57 g/cm [Z 5 8]. White with a green- name is for Russian mathematician B.N. Delone (Delau- ish tint in re¯ected light, no bire¯ectance or pleochroism, nay), 1890±1980. Type material is in the Fersman Min- isotropic. Re¯ectance percentages (given in 10-nm steps eralogical Museum, Moscow. The mineral is chemically from 400 to 700 nm; WTiC standard) are 37.3 (470), 37.7 the Ca analog of belovite, but the two minerals differ (546), 38.1 (589), and 38.6 (650). Single-crystal X-ray structurally. J.L.J. study indicated isometric symmetry, space group Fd3m, a 5 9.910 AÊ . Strongest lines of the powder pattern are * Before publication, minerals marked with an asterisk were 2.98(60,311), 2.48(80,400), 1.90(80,333), 1.75(100,440), approved by the Commission on New Minerals and Mineral and 1.001(70,844). Names, International Mineralogical Association. The magmatic Ni-Cu sul®de ore, which also contains 0003±004X/97/0708±0820$05.00 820 JAMBOR ET AL.: NEW MINERAL NAMES 821 moncheite, cooperite, and sperrylite, is associated with Electron microprobe analyses of two particles gave olivine pyroxenite dikes that occur about 150 km east of CaO 0.76, 0.74, P2O5 20.62, 18.70, V2O5 2.20, 2.27, UO2 Beijing. The chromite placers are near the village of 71.82, 68.46, H2O (by difference) 4.60, 9.83; after de- Shuangfeng, about 200 km NNE of Beijing. ducting for tyuyamunite impurity (an energy dispersion Discussion. Data for the mineral from the magmatic scan showed only U, P, and a trace of Fe), the analyses occurrence were abstracted in Am. Mineral., 61, p. 185 correspond to, respectively, U0.994Ca0.006(PO4)1.194(OH)0.42 (1976), which introduced several new but unapproved ´;0.3H2O, ideally U5(PO4)6(OH)2´1.5H2O, and to U0.997 names, including malanite and dayingite (p. 184). Data Ca0.003(PO4)1.16(OH)0.51´;0.7H2O, ideally U6 (PO4)7 for malanite were subsequently revised (Am. Mineral., (OH)3´4H2O. The O/U ratio is 2.15 in an ore sample con- 65, p. 408, 1980), following which dayingite was shown sisting predominantly of phosphate, indicating that U is to be Co-rich malanite (Am. Mineral., 67, 1081±1082, probably quadrivalent in the mineral. Aggregates of the 1982). Malanite has now been approved by the CNMMN mineral from Uzbekistan are very small, compact, and (IMA No. 95±003). J.L.J. dark green (size of particles not given). Average n 5 1.735. Least-squares re®nement of electron diffraction data (63 re¯ections) showed the mineral to be monoclinic, Sn intermetallic compounds space group C2/m, a 5 14.09(5), b 5 13.19(3), c 5 N.N. Krivitskaya, M.S. Sakharova, A.N. Ryabov, A.I. 15.02(15) AÊ , b589.4(6)8. No powder X-ray data could Tsepin (1995) New data on the intermetallic com- be obtained. The mineral was ®rst found in the Kanzhu- pounds of tin. Moscow Univ. Geol. Bull., 50(6), 65± gan exogenic deposit in the Chu-Sarysuyskaya depres- 70 (English translation of Vestnik Mosk. Univ. Geol.). sion, Kazakhstan, and later in the oxidized zone of the Koscheka and Dzhantuar deposits, Uzbekistan. At the lat- Complex intergrowths, to 0.5 mm, of native tin and ter localities the mineral has settled out mostly on unspe- intermetallic compounds occur in the Kubaka Au- ci®ed ``uran-micas'' (autunite, torbernite, etc.) and less -quartz-orthoclase (adularia) deposit in the Okhotsk±Chu- commonly on coconinoite. The mineral formed repeat- kotka volcanogenic belt, northeastern Russia. The largest edly during a complex hypergene process. intermetallic inclusions, to 20 mm, are represented by Discusion. The data reported are for material from Uz- Sn-Sb compounds; inclusions of other compounds are bekistan, but which locality is not speci®ed. E.S.G. 2±10 mm. All inclusions are white with a yellowish shade, and have a high re¯ectance and low hardness. Electron microprobe analyses are given for compounds Ca3.2(Sr,Na,Ce)1.8(PO4)3F corresponding to Sn2Sb, Sn3Sb2,Sn4Sb3,Cu6Sn5, SnPb, Sn Pb, Fe Sn, and native tin and stistaite. J.L.J. R.K. Rastsvetaeva, A.P. Komyakov (1996) Structural fea- 7 10 tures of a new naturally occurring representative of the ¯uorapatite-deloneite series. Kristallogra®ya, 41(5), 831±834 (in Russian). (Bi,Pb)3(Te,S)4 R.F. de Souza Lima, T. Mizuta, D. Ishiyama, T. Fujita Electron microprobe analysis (results not listed) gave (1996) Tellurium-bearing minerals in the CoÂrrego Cri- the formula (Ca6.31Sr2.33Na0.65)S9.29(Ce0.34La0.19Nd0.10 Pr0.02 minoso gold mining district, GoiaÂs State, Brazil. Re- Sm0.01)S0.66(P5.93Si0.11)S6.04O24[F1.33(OH)0.67]S2.00, simpli®ed as port Research Institute Natural Resources, Mining Col- Ca3.2R1.8(PO4)3F where R 5 Sr1.2Na0.3Ce0.3.