American Mineralogist, Volume 61, pages 174-186, 1976

NEW MINERAL NAMES*

MIcHeer-Flprscunn, Aoor-p Persr, J. A. MnNoanrNo GsoRce Y. CHno. ANDLours J. CnsRr

Baumite* 102.7 percent, corresponding to (Pdor,_o 'Pto 14_ossNio os o14) (Te, .r-, Crrrporo Fr.onogl nNo JuN lro (1975) Zinc-rrchchlorites from ,oBio.o o,"). The mineral is hexagonalwith a : 4 005(5),c = 5.244(8)Afor Franklin, New Jersey, with a note on chlorite nomenclature. (Pdo",Pto,rNioor)(Te,rrBioru)and a : 4.036, c : 5.259 A for Neues Jahrb. Mineral. Abh. 123, I I l-l15. (Pdo6oPto roNio,,)(Te, u.Bio.r).The powder patternis similar to that Analysis by J. I. gave SiO,33.5, Al,Os 6.60, Fe,O, 1.65,FeO of merenskyitewith strongestlines (22 given,including B-lines and 9 80, MgO 17.l,ZnO 6.65,CuO 0.03,MnO l2.3,CaO0.07, Na,O I lines without indices): 5.22 6 001, 2.90 l0 101, 2.09 6 0.02, K,O 0.08, H,O-(140') 02, H,O+(140") ll9, sum 99.90 r02.2.01 5 t r0. t.5605 r03. percent, corresponding to the formula Under the binoculars,the mineral is white to bright white with strong metallicluster Mineral grainsare semi-rounded,prismatic, (Mg, nMn, ,F€+ 1rZn, oAlo?Fd+o s)(Si? rAloe)Oro(OH)16 and hexagonaltabular (0 I I X0.l I mm). Under reflectedlight, the mineral white : X-ray powder data are given (Fe radiation). The strongest lines is with a yellow tint. Anisotropic ReflectanceRg, 46.7(400nm) (500nm), of 7 given are 7.23 l0 001; 3.590 6 002;2.5t0 3 201; hence rhe 50.9 56.5 (530nm), 57 7 (590nm), 55.870 (650nm) VHN : mineral is a member of the septechlorite group. When heated at 92-2O5 kl/mm2 500' for I hour, the mineral gave a weak, diffuse pattern; when Both mineralsoccur in a Cu-Ni sulfide depositin fine-grained heatedat 600" gave no pattern. metagabbro and amphibolite in China (details on locality not given) The metallic minerals in the Color dull black. Found in massesup to a foot in size on the deposit are mainly pyrite, chalcopyrite, magnetite, and millerite. dump of the Buckwheat open pit; it contains angular fragments of Other platinum group mineralspresent willemite and calcite, and is cut by thin veinlets of greenish-black are michenerite,moncheite, and merenskyite. The names maganoanzincian brunsvigite(analysis and X-ray data given) In are apparentlyderived from composition,according to the authors' proposed thin section baumite is translucent with brownish-yellow color, classificationscheme based on Pt:pd ratio: biteplatinite, )4: 1; moncheite, nearly isotropic, mean n 1.598.Under the highest magnification it 4:l-l:l; biteplapalladite, l: l-l:4; and merenskyite,(l:4. is seento be composed ofminute birefringent fibers thar appear ro have parallel extinction. Discussion Unnecessary names for intermediate members of the The name is for John Leach Baum, formerly chief geologist of moncheile-merenskyitegroup. It is regrettablethat the authors do the New Jersey Zinc Company..M.F. not follow the generallyaccepted approach in dealingwith a two- end-membersolid solution series.GYC. LJC. Biteplatinite and Biteplapalladite ( = Moncheite-Merenskyite Series) HunNc VnN-KANG, YEH HsIBN-HsIBN,CHINc yupt-MrNc, Caysichite* CsurNc Tseu-Fu, lNo FrNc CHuN-MrNc (1974)Biteplatinite- DoNnlr D HocnnrH, Gsoncr Y. Cruo, A. GEoRcEpr_eNr, aNo merenskyite system and michenerite from a mining district in Henolp R. Srrncy (1974)Caysichite, a new silico-carbonateof China and problems concerning their classificationand yttrium and calcium. Can Mineral 12, 293-298. nomenclature. Geochimica,4,258-26j (in Chinese with English abstract) The mineral occurs in granite pegmatite at the abandoned Evans-Lou feldspar mine, in the province of The mine is Biteplatinite Quebec. about 22 miles north of Ottawa Caysichite lines cavities as a dull Electron microprobe analysisgave: Pt 39.2,pd 1.2,Te 58.1, Bi white pulverulent coating or as a cream-colored stain. Other. rarer. 6 0, sum 104.5percent, corresponding to (Ptospdo *)(Te, ,rBio,r). occurrences are as thin incrustations with a parallel to slightly White with a strong metallicluster. Mineral grainsare irregular divergent columnar structure with a reniform surface;as radiating to tabular(0.09X0.18-0.1I X0.165 mm). Anisotropic,white under groups and terminated crystals; and as stalactites up to one cm reflected light. Reflectance Rg' : 56.1 (green), 57 8 (orange), long. Most of the following data apply to colorless crusts. The 58.1%(red) VHN : 120-170kg/mm", correspondingro 2.5-3 5 hardnessis 4.! and the VHN is 551. The mineral is non-fluores- on Moh's scale. cent under long or short wave ultra-violet light, but shows a faint Biteplapalladite green cathodoluminescenceunder electron bombardment. Caysi- chite is colorless, white, pale yellow, and rarely greenish. It has a Electron microprobe analysesgave (range): pt pd 7.0_lg 2, vitreous luster and a white streak Caysichite effervescesslowly in l0 9-18 6, Ni l.l-2.1, Te 50.7-588, Bi 12.0-20.0,sum 95.2_ cold, dilute HCI The rare crystals are prismatic, elongated parallel to c and + Minerals marked with an asterisk after the name were ap_ terminated by {001}. A prism and dome were observed under high proved before publication by the Commission on New Minerals magnification but their Miller indices could not be determined. and Mineral Names of the International Mineralogical Associ- Caysichiteis orthorhombic, Ccm2,or Ccmm,a 13.30,b13.95, c9.74 ation. A (N.S. If the form identified as a dome is truly a dome. the choice 174 NEW MINERAL NAMES t75 of spacegroup is narrowed to Ccm2, JAM). The strongest lines in were found to be halhium-rich,in fact to havein part Hf)Zr. The the X-ray powder pattern (in A for CuKa radiation) are:6.93 100 nomenclatureorooosed is: 020.1I 1: 4.38 60 I 30: 4.22 60 310: 3.4860 040'.and 3.32 90 400. Zircon 0-10 mole % HfSiOn Caysichiteis biaxial (-) with a = 1.586+ 0.004,P : | 614 + 10-50 mole % HfSiO4 0.001,r = 1.621+0.001 ,2V meas: 53o,2Vcalc:54"30',X: hafnian Zircon : : b, Y a, Z c for the colorless material. Yellowish crystals are zirconian Hafnon 50-90 mole 7o HfSiOr biaxial(-)witha = 1.589+ 0.004,8 : 1.616+ 0001,.y : | 626 Hafnon 90-100 mole 70 HfSiO4 + 0001, 2V calc:'12"451'(For theseindices the calculated2V should be 61"46' JAM). In immersion mounts, fragments give Probe analysesby Jaakko Siivola on two crystalsfrom Muiane nearly centered acute bisectrix figures suggesting{010} cleavage. gave SiO, 28.32,27.20; HfO, 69.78,72.52; ZrO" 3.28, 1.21,sum Chemical analysis of colorless caysichite (H,O by a modified 101.38,100 93 percent,corresponding to ratios : ez.O, Penfield method; CO, by both loss on ignition minus H,O and by 1g.lwi*- titrimetry; all other constituents by electron microprobe) gave: 97.2, calc6 32,6 48. Crystalswere zoned, with highestHf contents CaO 10.04,Y,O, 28.18,RE oxides(details are given in the paper) at ihe outer edges Other samplesgave ratios 33-78. Plots of the 8.08, SiO, 28.84,Al,Os 0.58, CO, 15.7,H,O 8.6, total 100.02wt unit cells show both a and c to decreasenearly linearly and d to in- percent. Fourteen other elements ranging from 0.01 to 0.05 wt creasewith increasing ratio. End-members are calculated to have percent were determined by mass spectroscopy. The chemical the following parameters. analysis yields a formula of Y, ou Ca, ., REo ., Si. ,, Alo o.O,o," Hfsion (CO'), 3.93 HrO This was calculated on the basis of l9 ZrSiOn "o oxygens(not counting those in the HrO). If the data are recalcu- ao 6 63s 6 567 lated on the basis of a total of 23 (four from H,O) oxygens the resultis Yro" Carn. REo.. SisruAloo" Ororn(Co.)r.n.3.94 HrO In ce 6 02, either case, the ideal formula is (Y,Ca,RE).(Si,Al)4Oro(COs)g d 459 7.00 (measuredds are much lower) : 4H,O. For Z 4, the calculateddensity is 3.029 g/cms, which Crystalswere associatedwith cookeiteand cleavelandite, compares favorably with the measured density of 3.03 g/cm". The name is for the composition DTA, TCA, and IR data are given in the paper. The name is for the composition. Type material is preservedin Discussion the National Mineral Collection.Ottawa. JAM. X-ray powder data and optical data would be helpful.M.F.

Jagowerite* Bazirite E. P. MsncHer., M. E. CoArEs,AND A. E. AHo (1973)Jagowerite: J. R. Hlwrss, R. J. MnnnrvlN, R. R. HlnorNc, ANDD. P F. a new barium phosphate from the Yukon Territory. Can. Min- DnnsysHtns(1975) Rockall Island:new geological,petrological, eral 12,135-136. chemicaland Rb-Sr agedata. Inst Geol. Sci.Gr Brit Rep.15/1, il-51. Analysis, recalculated after deducting admixed quartz, gave P,Ou 31.41, Al,O. 25 87, Fe,O, 0.26, BaO 38.41, HrO+ 4.09, preliminary granite A report. Aegirine-riebeckite from Rockall S 0.15, sum 100.19 percent, corresponding to the formula Island (between lceland and the British Isles) was reported by Ba, orAl, ,rFeoo'P, BoSoo2Os(OH)2, or BaAL(PO.)z(OH), Spectro- Sabine in 1960to contain a colorlessmineral containing Ba, Zr, scopic analysis showed the presenceof lessthan 0 I percent of Ca, andSi. Probeanalysis(av.of l9) by Mrs A. E TreshamgaveSiO, Cr,Ti,V,Ta,Nm,Cu, Be, and Sr. Inso[. in HCl. 40.2,ZrO" 22 0, BaO 33.7, K,O 0.3, sum 96.2 percent The strong- X-ray study (precession)showed the mineral to be triclinic est X-ray lines (21 given) are 5.86030, 3 804 100, 2 800 90,2 012 The unit cell parameters, refined from X-ray powder data, are 35, 1.818 30, 1.60230; these agree closely with data for artificial a 6.049,b 6.964,c 4971 A, a I 16.51',B 86 06', t 112.59",Z : I, BaZrSirO, (card l9-149). G 4.01 meas,4.05 calc The strongestX-ray lines (25 given) are Crystalsare small (up to 0.65 mm long, 0.25 mm across),pris- 5.55 40 100;326 60 101:3.00 100 210;294 55 Il0; matic. Cleavagepyramidal good, prismatic poor. Optically unia- 2.2135 21l: 1 90 35 030. xial, pos 1.673,e I 685. The mineral is associatedwith elpidite ,u Color light green,luster vitreous, H 4.5 Optically biaxial,posi- quartz. and The name is for the composition. tive,ns (Na) a 1.6'72,01.693,7 l1l0 (all + 0.003),2V80 + 5" Discussion Fluorescesgreenish-white under long-waveU. V. Cleavages{100} and {01l} good, {01l} fair. The X-ray data indicate this mineral to be isostructural with The mineral is found in crystalline massesup to one inch across benitoiteand pabstite M.F. in quartz veins in tension fractures in a carbonaceousargillite, l6 miles north of the Hess River, Yukon Territory, Canada.Associ- ated mineralsare pyrite and hinsdalite Hafnon* The name is for the late J. A. Gower, formerly Professor of M ineralogy, U niversityof BritishColum bia, wheretype materialis J. M. Connsre Nrves, J E. Loprs Nulss, lNo TH. G. Srnnnal preserved.M.F. (1974) High hafnium members of the zircon-hafnon seriesfrom the granite pegmatites of Zambezia, Mozambique. Contrib. Mineral. Petrot 48.73-80. Kegelite+ Crystals of "zircon" from tantalum-bearingpegmatites of the O MrorNsncH nro K ScnvrrzER (1975) Kegelite, ein neues Conco, Moneia, and Muiane mines, Morrua area, Mozambique, Bleisilicat. Naturwissenschaften, 62, 137. t76 NEIY MINERAL NAMES

The mineral occursin very small(30 microns,thickness/micron) with a 7.00,c 16.724,but this givesZ : 0.32with the formula pseudohexagonalplates that form spherical aggregates,intergrown above. with hematiteand mimetite,in the deepoxidation zoneat Tsumeb, The mineral is colorless,gray, pale blue, or yellow-green. Luster S. W. Africa. Other minerals present include leadhiilite, anglesite, vitreous H 3.5,G 3.75 + 0.01.Mpabout 1200'C. Nocleavage or fleischerite,melanotekite, and alamosite. Microprobe analyses(not an indistinctone on [0001].Optically uniaxial, positive,zoned, a: given) give the formula Pb,dZn,Fe),A11(Sirrs{)Ob4.Insol. in HCl. rangesfrom 1.682(center) to 1.704(periphery), r from 1.670to The strongestX-ray lines are 21.0670, 7.036 100, 3 826 ?5, 3.010 1.691,birefringence 0.012-0.013 (note: the data given correspond 95,2.594 75. Cleavagenot observed. to uniaxial, neg M.F.). The colorlessvarieties do not fluorescein Optically biaxial,neg., 2 V very small,n in plane of plates 1.81. U.V.; the colored varieties fluoresce in turquoise blue. Infrared The name is for F. W. Kegel, former director of the mines opera- spectra are glven. tions.M.F. The mineral occurs in the oxidation zone of the Madjarova polymetallic deposit, associated with hydroxides of Fe and Mn, kaolinite, anglesite,and with pyromorphite which Meixnerite* it replaces.The name is for Orpheus, the mythical singer in the Rhodopes. Type S. KonrrNrc AND P. SUssE (1975) Meixnerite, Mg6Al,(OH)rs material is at the Museum of Mineralogy, "Kliment Ochridski" .4HrO, ein neues Magnesium-Aluminium-Hydroxid-Mineral. University, Sofia. Tschermak's Mineral. Petrogr Mitt. 22,'79-87. Discussion Microprobe analysis gave MgO 36.5 (36.21), Alroa 15.0(15.26), Needs further study. The mineral of the beudantite group com- Fe,O' 0.55, H,O (by difference) 47.95 (45.53), sum 100.00percent, monly show departures from the l: I ratio of PO. (or asOn) to the figures in brackets being the ideal composition corresponding to the formula. SOr. I considerthis mineral to be probably a variety of hinsdalite. M.F. Meixnerite occurs as a secondary mineral with talc and later aragonite in cracks of a serpentine rock near Ybbs-persenberg, Pumpellyite and julgoldite nomenclature* Lower Austria. The crystals are tabular, colorless transparent, : optically uniaxial with ft 1.517,cleavage parallel to 0001 perfect. Elro Pnsseclre ANDGLAUco Gorrenor (1973)Crystal chemistry Meixnerite is trigonal rhombohedral, spacegroup R3z , a 3.O463t and nomenclature of pumpellyites and julgoldites. Can. Mineral. 0.0015, c 22.93 + 0.02 A, Z : 3/S; it is strucrurally relared to 12.2t9-223. hyd.rotalcite. The new mineral is named in honor of Professor H. Meixner, A system of nomenclature is proposed for the pumpellyite series Salzburg. Type material is preservedin the mineral collections of based on the general formula WaX,Y62,066_"(0H)". In the for- : = the Universities of Glaurite, and cubic iron-bearing b 6.071,c 6.158A,B I13" l6'. Least-squaresrefinement of the X- Can. M ineral. 12, 280-284. ray data for iridarsenite gave: a 6.05, b 6.06, c 6. l8A, B ll3" 17'. For Z :4, the calculateddensity of lrAsz is 10.9 g/cm8. The Ruthenarsenite strongest lines in the X-ray powder pattern are (in A, radiation not Examination of more than 75 nuggets or fragments from the given): 3.90 l0 I I 1; 2.84 7 002; 2.61 5 121; 2.069 Territory of Papua and New Guinea resulted in the discovery of 6 022; and 1.9105 311. two new minerals, ruthenarsenite and iridarsenite. These new spe- Type material is preserved in the National Mineral Collection, cies were found in only two of the nuggets. Ottawa. J.A.M. Ruthenarsenite occurs as irregular inclusions up to 100 microns long with irarsite and iridarsenite in a matrix of rutheniridosmine. Ruthenium* In reflectedlight (oil immersion) it is pale orange-brown to brown- Yurrrosgl Unesstve, Tnplo W,r\xnsAYAsHI,TosglYurt MASAKI, ish grey, shows distinct bireflectance,and has strong anisotropism lNo YlsuNonl Tennsnrt (1974) Ruthenium, a new mineral varying from orange-brown to light steel-grey. Maximum and from Horakanai, Hokkaido, Japan. Mtneral (Tokyo)' 7' minimum reflectance values (averaged for four grains) are: 48.6 "/' 438-444 (in English). and 46.1 (470 nm), 49.5 and 47.5 (546 nm), 50.9 and 49.3(589 nm), placer, 52.4 and 5l I (650 nm). Micro-identation hardness(for two grains) A microprobe analysis of a sample from the Horokanai is 743 and 933 kg/mm" for a 100 g load. Hokkaido, gave Ru 64.43,h 14 62, Pt 9:14, Rh 7.05,Os 5.29,Pd Electron mi.croprobe analyses for three grains are given. The 0.49, Fe 0.21, Ni, Cu trace, sum 101.23percent, corresponding to average of the determinations from these analysesare: Ir 3.9, Ru Ruo ,.1roo"Pto ouRho o.Oso orPdo or. 44.2,Os0.7,Pt -, Rh 3.3,Pd 1.8,Cu-, Ni 4.0,Fe-,As40.4, S The mineral is probably hexagonal. lt occurs as a tabular crystal -, total 98 3 wt percent. These data give an average formula of 7 X 35 microns, in platy rutheniridosium. In reflected light white percent at 530 nn Weakly (Ruo., Nio,, Rhoo, Iro.ooPdo o, Osoo,) Asr ooor, ideally, RuAs. with creamy tint. Reflectivity 60.1 Single crystal data could not be obtained, but the X-ray powder anisotropic. Type material is at the University of Kagoshima, pattern could be indexed on the unit cell of synthetic RuAs. Hey- Japan. M.F. ding and Calvert (1961) gave the following data for synthetic Sobotkite RuAs: orthorhombic, Pnma, a 5.70, b 3.25, c 6.27 A. A least- CzEsuw HlnlNczvr nNo Kenol PncHlzre (1974) Hydrous squares refinement of the data for ruthenarsenite gave:a 5.628, b magnesium-nickel silicatesfrom Wiry, Lower Silesia.Prace Mu' 3.239, c 6.1844. F or Z : 4 and,acomposition of (Ruo r"Nio ")As, zeum Ziemi, 22, 3-64 (in Polish, with English summary, p. the calculated density is 10.0 g,/cm3 The strongest lines in the X- s6-62). ray powder pattern are (in A, radiation not given): 2.696 7 102; Analysis gave SiO, 39.68, AlrO, 20.98, FerOe trace, MnO trace, 2 r24 5 2 10;2.061 l0 I I 2; 1.7804 30I ; 1.750 4 2I 2; 1.3434 t t 4; and' | 3024 410. MgO 16.72,NiO 0.014,CaO 1.58,K,O 0.15, Na,O trace, HzOa to the formula Type material is preserved in the National Mineral Collection, 20.71, sum 99.83 percent, corresponding (Cao,rKo o'u)(Mg,r'Alo o.Aloil)Oro(OH), ' 5.l8HrO, a trioc- Ottawa. J.A.M. "u)(Si, tahedral member of the montmorillonite group. The Dtl curve Iridarsenile showsendothermal breaks at l80o;600 ",680'(small), and 830", Iridarsenite occurs with ruthenarsenite as inclusions up to 60 and a large exothermic break 890o. The mineral loses about l0 microns long with irarsite and ruthenarsenitein rutheniridosmine. percent HrO to 300", l5 percent to 600o, the remainder gradually In reflectedlight (oit immersion) it is medium grey with a brownish to 800-900'. The mineral swells with glycerol. The X-ray pattern is tint, shows weak to nil bireflectance, and has weak but distinct diffuse(ll lines) with strongestlines 14.507 001;4.489 110,020; anisotropism varying from medium grey to pale orange-brown. 2.61 6 130,200; 2.5t 6 202; 2.4t 5 007; 2.351 5 203; 1.527 6 060; -- Maximum and minimum reflectance values (averaged for four b 9.t6-9.21A. grains) are: 46.9 and 47.2 (470 nm), 46.1 and 45 4 (546 nm), 46.6 The mineral is palegreen, soapy, G (pycnometer)2.31, H. about and 44.9 (589 nm), and 44.0 and 41.4 (650 nm). (N.B. for 470 nm, 3. Three sampleshad zs 1.523,1.525, 1.528 (each +0.002). the maximum value given is lessthan the minimum value. JAM) The mineral occurs with nickeloan lizardite, chrysotile, and The micro-indentation hardness (for two grains) is 488 and 606 pimelite in weatheredserpentinites of the Gogolow-Jordanow mas- kg/mmz for a 100 g load. sif. Lower Silesia. Poland. The name is for Mt. Sobotka. Electron microprobe analysis for five grains are given. One of Discussion these is high in ruthenium. The average of the determinations of It is a difficult problem to decide whether this name should be the other four are:Ir 52.2,Ru I .7,Os 0.4, Pt l.l, Rh 0.2, Pd 0.I, Cu retained or whether it should be considered to be an aluminian -, Ni -, Fe -, As 44.0, S 0.2, total 99.9 wt percent. The average saponite. M.F. 178 NEW MINERAL NAMES

Sudburyite* low, orange yellow, and pale greenish yellow. Semi-transparent to translucent. Streak white to pale yellow. Luster pearly on crystal Lours J. Cnsnr eNo J. H Grlr-ts Lrplnrr.rlre(1974) Sudburyite, a facesand resinouson fracture surfaces Cleavages{ 100},{010}, and new palladium-antimony mineral from Sudbury, OnLario. Can. {001}perfect. Fracture uneven.Hardness = 4.7, microhardness: Mineral 12,275-279. 352.5 kg/sq mm. The mineral is brittle and moderately magnetic. : Sudburyite has been found in polished sectionsof ore from the Sp. gr. 4.4. Frood mine and the Copper Cliff South mine in the Sudbury area Optically the mineral is biaxial positive,a = 2.194,P = 2.212 x = of Ontario Most of the data are for the Copper Cliff South (calcd),7 2.248,2V 70", non-pleochroicwith parallelextinc- occurrence. The mineral occurs as small, often elongated, in- tion and negativeelongation clusions(18 X 100 microns or less)in cobaltite and maucherite. The mineral occurs in an yttrium-rare-earth-rich muscovite Other associatedminerals are: chalcopyrite, galena, breithauptite, granite, Southern China, associatedwith xenotime, monazite, zir- and nickeline. Pentlandite, pyrrhotite, and michenerite also oc- con, fergusonite, thorite, doverite, gadolinite, chernovite, colum- curred in the samples. bite, and cassiterite.The mineral is presumablya product of the Electron microprobe analysesare given for ten different grains. autometasomatism from biotite granite to muscovite granite Theserange as follows: Pd 29.2-45.5,Ni 0.48-11.6,Sb 45.3-59.3, Discussion Bi 0.53-5.4, Te 0.07-3.9, As 0.03-2.04,rotal 98.73-102.18.The following analysis(No. l) is of a grain which gavethe highestPd The mineral is simply aeschynite-(Y) (priorite), and no reason js content: Pd 45.2,Ni 1.06,Sb 52.8,Bi 0.53,Te 0.07,As 2.04,total for the name evident It is apparently a common practice in the l0l 70. All of the analyses conform to a general formula of People'sRepublic of China that compositional varietiesare named (Pd,NiXSb,Bi,As,Te)or, ideally,PdSb For example,analysis No. in the same way as mineral species.Sc appears in the calculated formula but not in the chemicalanalysis. G.Y.C. I (given above) yields the formula (Pdoe6Nio o1)Sbo ouBioo,) "rAso Under reflected light in air, sudburyite is white with a yellow tint, shows no bireflectance, and is weakly to moderately ani- Tsavolite sotropic Under oil immersion pale it is yellow, shows no bireflec- H. BrNr (1975) Grtne chrom- und vanadiumhaltigeGranate tance, and is moderately anisotropic with colors light greyish yel- (Grossulare) aus Kenya: Tsavolith-Msulfides. CHt Lu.rc-vr (1974) Taiyite, a new variety of aeschynite-priorite Microprobe analysis showed this phase to be an apparently un- group. Acta Ceol. Sim 1914, 9l-94 (in Chinese with English known Cu-Ag-Te-sulfide of formula CuAg"TeSr. M.F. abstract) Unnamed (Ba,Sr)VOSirO. Chemical analysis gave: TiO, 45.25, TRrOs 32.41, (Zr,Hf)O, 0.26, V2Os0.03, UsO. 0.61, ThO, 0.99, Nbros 2.25,Ta"Ou 2.25, Kazuo Katao Yoshinori Sugitani, and Kozo Nagashima (1974) SiO, 5.26, A12Os2.32,CaO O.24,MgO 0.19, MnO 0.08, Fe,O, 1.94, Absorption spectrum of a new barium vanadyl silicate, Ba- loss on ignition 2.32, sum 99.72 percent, corresponding to VOSi,O" Mineral../. (Tokyo), 7, 421-430. (TRo 6?UoorTho orFeo orAlo '3Sco orMgo.qlCao orXTir 6oNbo,rTao o"Zro o, The spectrum is given; the mineral is stated to Sio14)Ou r.(OH)0.u. Distribution of rare earth is YzOs49.70, Gdrol be the Ba ana- logue of haradaite Mineral. 56, ll23 (1971); 60, 340 (1975)1. 6.93,,Tb1O?1.74, Dy,O3 14 00,Ho,O, 2.28,8r"016.86,TmrO, l.07, IAm. M.F. YbrO38.39, LurO, l.l8,.LarOr 0.33,CeO, I 68, Pr"O,, 0.46,Ndrog 2.08, SmrO. 3 19, sum 100 percent The mineral dissolvesin HzSOr + HCIO1, but not in HCI Unnamed CaZrSirO" Single crystal X-ray work showed the mineral to be J. GrrrrNs, ELvTRAL. GrsplnnrNr, nNo S. G. Flerr (1973) The orthorhombic, Pbnm,witha = 5.18,b = t0.92,c = 7.50 A. Two occurrence of vlasovite in Canada. Can. Mineral. 12,211-214. sets of unindexed powder data with 34 and 4l lines are given Strongestlines are: 2.902 10,2.93 l0:2.715 5,2.74 6;2.503 4,2.56 Vlasovite from an agpaitic alkaline rock complex at the Kipawa 6; 1.656 4, | .67 5: 1.5804, l 59 6; 1.0597 , | .06258; I .0517, 1.055 River, Villedieu Township, Temiskaming County, Quebec (Lat. 5B 46" 4'l' 49'N, Long. 78o 29' 3l'W), contains an alteration product The crystals (0.075-0.03 mm) are commonly tabular, and less identified as CaZrSirOr. The mineral occurs as radiating sheavesof commonly prismatic; a few crystals are granular. Color pale yel- prismatic crystals 0.1 to 0.3 mm long. Aside from a very low NEW MINERAL NAMES t79 birefringence, no other optical or physical data could be deter- Fifteen New Minerals from the Talnakh Deposit mined. Electron microprobe analysis (average of two analyses) L. V RnzrN, V. D. Bncrzov, nNo V. I. MrsucHlNrlNr (1973) gave:SiO,40.3, FeO 0.3, MgO 0.1, CaO 18.0,Na,O 0.4, K,O 0.1, Data on mineralogy of platinum metals in the Talnakh deposit. ZrOz 41.3, total 100.5.This gives a formula (based on seven oxy- Trudy TsNIGR/, 108, 96-151, Moscow (English translation in gens) of (Caor"Na" ozMgoorFeOo or)Zr, ooSi2ooOz oo. (This abstractor Int Geol Reu. (1975),17, 6-56). getsessentially the same resultsexcept for Nao o. and Ko or).J.A.M. Fifteen minerals are describedas "discovered for the first time." Unamed Pt-Pd Minerals Though no formal names have been presented,a nomenclature is employed, partly in the Tables and partly in the text, that usesthe P. Mlnllx, J. B. E. J.rrcosseN,AND S. A. Hrrusru (1974) major elementsfrom the quasi-cations and anions. An unfortunate Platinum-group minerals from a hydrothermal environment. aspect of this approach is that several minor elements, whose Econ. Geol. 69, 257-262. presencein any single structure may be non-essentialand acciden- L. J. Cesnt exo K. M. Plcrwtcr (1974) A complex bismuthian tal, are sometimes used in deriving the nomenclature of these palladium telluride intergrowth from the Stillwater Complex, minerals. More serious, however, is the complete lack of single Montana. Econ. Geol. 69,263-265. crystal data together with proposed non-ideal stoichiometries for all fifteen minerals, the latter being more easily explained by ana- The first paper describes three minerals from the Artonvilla lytical errors. It is also not stated whether or where type material is mine, near Messina, South Africa, occurring with bornite, preserved.(L.J.C.) chalcocite, clausthalite, and digenite. Probe analysesand optical data are given. One mineral appears to be a bismuth-poor Solid Solution of Pd and Sn in Platinum (:rustenburgite) kotulskite.Another gave Pt 15.1,Pd 234,Te 63.3,Bi 0.1, sum PtrPd. uSnn 101.8, corresponding to (Pdo.".Pto,.)Te,rrBio.-,or (Pd,Pt)rTeu. Reflectances(min. and max.) are: 480 nm, 45 8,47.9: 5[6 nn,48 2, Probe analysesgave: Pt 58.3,Pd 19.8,Cu 1.3,Ni 0.9, Fe 0.1, Sn 51.3; 589 nm, 48.5, 53.2;656 nm, 52.3,56.4 percent.The mineral 196, Bi 25, Pb n.d, total 102.5 percent. Cubic, Fm3m, a: has a pinkish tinge and is weakly anisotropic. 3.984(2)A,Z : 4,powder lines:2.30 l0 l1l,1.99'71 200, 1.4096 The second paper describes a very similar mineral that gave a 220, 1.273 2b 3 I 0, 1.2O36 -i1,1,l. I 50 4 22 2. Reflected light (air?)- probe analysisPd 30.79,Ni 0.19, Ru 0.13,Te 51.42,Bi 15.93,sum bright white with rose tint againstchalcopyrite and silicates,iso- 98.46 percent, corresponding to Pdr(Ten,"Bio Scanning electron tropic Reflectancevalues in air--460 nm 56.6, 550 nm 59.7, 580 nm ""). microscopy showed however, that the material was an intergrowth 62.2,640 nm 62.8 percentVHN,. = 304 (301-306)and VHN* : of 2 phases,probably merenskyite and kotulskite, with inclusions 384 (361-392). No reaction with any regular etch reagents.Grains of hessite No such intergrowths were found in the material of the average 30-70 microns in diameter and range from 5 to 1080 first paper. microns. Occurs as skeletal metacrystals with stepped facets and The first paper also gives data on a third mineral. Probe analyses rectangular cross-sections;as anhedral elongated and isometric gave Pt 28.6,24.2, 18.6;Pd 10.8, 14.8,15.0; Te 58.3,60.5, 64.6; Bi grains. Associated minerals: polarite, sperrylite, Au, Au-'Ag and none, sum 97.7,99.5,98 2, correspondingto (PtoEePdo4r)Tel64, Ag-Au alloys, plumbopalladinite, Pd and Pt stannides and arse- (Pto.zPdos)Ter and (Pto.oPdouo)Tez rn, suggesting a series nides, chalcopyrite, talnakhite, cubanite, magnetite, valleriite, and "r, (Pt,Pd)Te,-(Pd,Pt)Ter. They may be moncheite-merenskyite.Op- silicates. tical data are given. M.F. Discussion Appears to be identical to rustenburgite (dis- ordered Pt'Sn) of Mihalik et al (1975) Can. Mineral 13, 146-150; Wroewolfeitex to (Pt,Pd,NiL(Sn,Sb), of Jen and Huang, 1973 (Am. Mineral. 1975,60. 738), to (Pt,Pd),Sn, of Razin Bykov (1971) (Am. P. J. Dutttt, R. C. Rousr, rNo J. A. Nu-nN (1975)Wroewolfeite, a 3nd Mineral 1972,57,595-596) : unnamed S and with sorheof the new copper sulphate hydroxide hydrate. Mineral. Mag.40, .l-5. minerals grouped under unnamed Z of Cabri (1972), Minerals. Sci. Electronmicroprobe analysisby J A. N. gave Cu 5l.l + 0.8, S Eng.,4, No. 3, 3-29 Unnecessarydescriptive name and formula. 6.6 + O.2percent, which calculatesto CuO 64.22,SO3 16.48,H,O L.J.C. (by ditr.) 19.30 percent, corresponding to Cu.(SO.XOH)6 2H,O. Precession photographs show the mineral to be monoclinic, Solid Solutions of Pt,Sn, and Pb in Palladium (:atokite) spacegroup Pc or P2/c, a 6.058,b 5.656,c 14.360A, B 93'28', Z : Pd,oSns,PttuPb, o-Pdt,Sn, uPb, 2, G calc 3 30, observed by flotation 3.27 + 0.01. The strongest line! of 4l given are 7.152l0iD 002,3.58170 0U,2.62835 022,2.004 Pd,,Sn"uPb". Probe anal.: Pd. 57.0, Pt 4.9, Au 3.3, Sn 14.6, 30 222,215. The X-ray study shows twinning on {0011. Pb 20.5, Cu n.d., total 100 3 percent. Cubic Fm3m, a = 3.976(3)4, Color deep greenish blue, streak light blue, luster vitreous. 2.29r0 1t 1. 1.99s7b 200. | 4057b 220. t.200 Eb 3 I t. t.t4't4b 222. Cleavages t0l0), {100}, {001}, easy and perfect. H 2.5. Optically Reflected light (air?)-pale creamy grey, isotropic, occasionally biaxial, negative,ns a 1.637,P 1.682,t 1.694,2V-53", strongly weakly anisotropic.R per cent in air R'p 460 nm 55.0,550 nm 54.6, pleochroic, X light blue, I/ deep greenish-blue,Z medium greenish- 580 nm 55.6,640 nm 59.0.R'g 460 nm 55.6,550 nm 56.6,580 nm blue, absorption YIZ)) X. 58.1, 640 nm 61.8. VHNro = 459(432-598),etches only with aqua The mineral occurs in the oxidation zone of the old lead mine at regia (strongly). Occurs as rectangular and triangular cross-sec- Loudville, Massachusetts,as minute euhedral crystals up to 0.5 X tions and as anhedral grains with stepped facets. Grains average 1.0 mm, associated with chalcocite, covellite, and langite. The 60-70 microns in diameter but range from 2 to 700 microns. mineral alters to brochantite and malachite. It has also been found Associated minerals: chalcopyrite, cubanite, magnetite, valleriite, at two mines in England. polarite, sperrylite, gold-silver alloys and other unnamed PGM. Type material is in the U.S. National Museum, no 127329.The PdroSn""PtruPbro.Probe anal.: Pd 50.5, Pt 13.9,Ag 2 9, Au name is for C. Wroe Wolfo, American Crystallographer. M. F. 2.5,Cu 0.1,Sn 21.0,Pb 10.0,total 100.9percent. Cubic FmJm,a = 180 NEIT MINERAL NAMES

3.99(l) A. Reflected light (air?)-greyish white, creamy tinge (air?) white, isotropic,R percentin air 460 nm 61.6, 550 nm 66.6, againstPt-Fe alloys, isotropic.R percentin air 460 nm 53.6, 550 580 nm 62.6, 640 nm 64 5 Occurs as rectangular, square, or nm 60 6, 580 nm 62.3, 640 nm 63 9 VHN,. : 465(423-5t9). Etches elongated grains and as platy intergrowths with the mineral only with aqua regia. Occurs as oval or elongated grains. Grains (Pd,Pt)r*,(As,Sn,Pb).The grainsaverage 50-60 micronsin diame- average 30 microns in diameter but range from l0 to 80 microns. ter but range from 5 to 90 microns. Associated minerals: chalcopy- Associatedminerals: talnakhite, cubanite, valleriite, Pt-Fe alloys, rite, cubanite, pentlandite, magnetite, valleriite, djerfisherite, gold-silveralloys, and other unnamed PGM. sperrylite,polarite, gold, and unnamed PGM. Discussion Both (a) and (b) appear to be identical to atokite Discussion Not enough data to determine whether the formula (disordered PdrSn) of Mihalik et al (1975) Can. Mineral. 13, derived from analysis rdpresentsa new speciesor whether this is a 146-150, ro (Pd,Pt),(Sn,Pb),of Razin and Bykov (197t) (Am. Pb-rich variety of ordered PdrSn Unnecessaryname. L.J,C. Mineral., 19'72,51,595-596) : unnamedmineral R and with some of the mineralsgrouped under unnamedZof Cabri(1972).Unnec- P al ladium- C op pe r- Pla t inum S tannide essarynames and formulae. L.J.C. (pd,Cu,pt)s*"Sn Plat inum- Pal ladium S t annide Probe analysesof 5 samplesgave: Pd 34.0,47 .7 ,49.4, 50.8,5 I .l; (Pt,Pd),*,Sn Pr27.3, 12.4,12.4, 137,ll.6; Cu 10.4,8.3, 8 5, 8.6, ll.2; Rh 0 9, 0 7, -, 1.3,-; Au -, l.l, 0.8,0.5, -; Sn 25.9,24 5,25 0,22.0,27.5;Pb Probeanalysis gave: Pt 58 Pd 6, 16.3,Au 4.6,Cu 1.2,Ni 0.5,Sn 0.4, I 5, 1.0,5.7, -; Sb 2.3, I 1, 1.0,-, -; Bi -,3.1, -, -, -,: Totals: 19.2-1004 percent(Pb n.d.) Cubic Pm3m,a : 3.984(l) A anda = 101.2, 1004, 99.5, 102.3, l0l 4 percent.Tetragonal P4/mmm, a = 3.980A. Powder lines:2.30 I I t 1, 1.9946 200, 1.4097 220, 1.3324 4.072c : 3.720A. Strongestpowder lines(twelve total) = 2.28 l0 22t,300, t.2006 3I t, t.lOt 5 320,0.914 6b JJ1,0.891 1b 420,0.8t4 ll1.2.04 4 200. and | 2144 311 6b 422. R percentin air: 460 nm 53.8, 550 nm 58.9, 580 nm 59.9, In reflected light (air?) pale creamy grey with rose, brown, or 640 nm 62 5 VHN,. = 288(269-321), VHNso = (245-318), 274 Iilac tints. Bireflectancevaries from barely perceptible(cream grey) VHNroo: 290(272-31l) No reactionwith standard etch reagents. to definite (roseate); weakly to markedly anisotropic with greyish- Grain size,textures, and associatedminerals the sameas reported orange color effects.Usually shows polysynthetic twinning. R per- for the mineral Pt?Pd1 5Sn4. cent in air for first analysisR'p 460 nm 41.2,550nm 48.0, 580 nm Discussion This mineral is the ordered form of PtsSn. The 49.8,640 nm 53.9;R'g460 nm 44 8, 550 nm 51.6,580 nm 53.6,640 name is unfortunateas it impliesthat Pd is alwaysa requirement. nm 57 8. VHN^ : 295(277-344). Weakly etched by aqua regia. The * in the formula may be due to analyticalerrors. L.J.C. Occurs as oval, isometric, elongated anhedral grains and as Pal ladium- Pla t inum S t annide margins at intergrowths of Pt minerals; cross sectionsare rectangu- lar, pentagonal, and triangular. Grains average40-80 microns in (pd,pt).*,Sn diameter but range from 2 microns to 4 millimeters. Associated minerals:polarite, sperrylite, Au-Ag alloys,Pt-Fe alloys, Ag, other Probe analysesof 3 samplesgave Pd 37.6,41.9,44.9; Pt 36.2, PGM, chalcopyrite, talnakhite, magnetite, valleriite, galena, 27.1,25.9;Cu 1.6,1.3, I 3;Ag I 7,1.4,-;Au 1.5,-,I 5;Ni0.7,0.3, sphalerite. 0.4;Rh -, -,0 5;Sn 22 1,23.2,21.8;Pb 0.3,n d.,3.3;Sb 0 2,-,0.5; Discussion The mineral is indexed as tetragonal PdrSn with Bi -, -,0.9: totals 101.9,95.2, 101.0percent. Cubic Pm3m, a = referenceto Schubert et al (1959). That referencedoes not discuss 3984(2) A. Strongestpowder lines:2.30 t0 I1t,I.g8g8 200, l.4O'I PdrSn,however, and Pdssnwith tetragonalsymmetry is unknown 8 220, | 203 l0* J11, I l5l 5 222 plus some weaker reflections in the Pd-Sn system Single crystal work is necessary.The t in the indicative of ordering. R percent in air for 2 samples: 460 nm 59.2, formula may be due to analytical errors. This mineral may be the 576; 550 nm 61.2,610; 580 nm 62.2,616;640 nm 640, 62.8. sameas some of the mineralsgrouped under unnamedZ of Cabri Reflected light (air?)-bright white with creamy tinge if next to (1972) The name is unfortunate as the essentialnature of all the chalcopyrite, isotropic. V HNzo : 406(393-4I 9 and 426 (423-432 ) ), elements is yet to be proved. L,J.C. VHNue,lee: 392(387-402) Negative to etching reageants except occasionally with aqua regia. Associated minerals: talnakhite, P al ladium- P la t inum A rse nos tannide chalcopyrite,magnetite, polarite, Au-Ag alloys, Pt-Fe alloys, and other unnamed PGM. Occursas elongatedanhedral grains as well (Pd,Pt)ar"(Sn,As) as cubic crystals and rectangular grains with steppedfacets. Grains Probe analysisof one grain gave Pd 67.0;Pt 5 2; Au2.'7;Cu 1.0; average300-400 microns in diameter but range from l0 microns to 2.2 millimeters Sn 16.9; As 7.0; Bi 1.0; Pb not detected;total 100.8 percent Indexedas tetragonal,P4/mmn, a = 399tc : 3 655 A from a six * This intensitywas omitted accidentally. line powder pattern:2.23 l0 222, 1.986I 400, 1.906| 401, 1.4713 Discussion This mineral is the ordered form of pdsSn. The 432, t.405 | 440, t.t90 3 622. name is unfortunate as it imples that Pt is always a requirement. ln reflected light (air?) the mineral is light grey with creamy, The t in the formula may be due to analyticalerror. L.J.C. occasionallyyellowish tints; very weakly bireflectantin air; ani- sotropic with brownish grey colors. R percentin air 460 nm 50.6, Palladium Platinum A rsenoplumbostannide 550 nm 54.3,580 nm 55.5,640 nm 57.5,VHN,. = 480(476-506). (Pd,Pt),*,(Sn,Pb,Asl Occurs as anhedral grains, platy intergrowths with (Pd,Pt)5 ,(Sn,Pb,AsL. Grains average20 microns in diameterbut Probe analysesgave: Pd49.7 Pt 17.0,Ag I 6, Cu 0.6, Rh 0.5, Sn range from 2 to 300 microns Associated minerals: polarite, sperry- t7.9, Pb 10.7,As 2.5; total 100.5percenr. Cubic Pm3m,a:3.99(l) lite, Ag-Au alloys,Au, other PGM, chalcopyrite,cubanite, talnak- A, powderlines 2.31 l0 111,2.OO3200, t.78Ot 2t0, 1.617| 2tt, hrte, pentlandite, magnetite, valleriite, djerfisherite, galena, and 1.423b220, | 328 | 221,300, | 203 31t, t.t5 | 222 Reflectedlisht sohalerite. NEW MINERAL NAMES 181

Discussion. Not enough data to determine whether the mineral surround intergrowths of PGM. The grains average l5-20 microns is a unique species.The name is unjustified and single crystal work in diameter and range in size from 5 to 100 microns. Associated is necessary.L.J.C. minerals: polarite, Ag-Au alloys, sperrylite, (Pd,Cu,Pt)'*'Sn, elec- trum, chalcopyrite, cubanite, silicates,galena. P al ladium-p lat inum P lumbost annoars e nide Discussion. Needs further study, especiallysingle crystal work (Pd,Pt),*,(As,Sn,Pb) and synthesis.The name has already been used for PdBir,r-r., an incompletely characterized mineral of Shernayev and Yushko- Probe analysisofone grain gavePd 60.9,Pt 5.4,Ag 2.1, Rh 0.5, Zakharova (see unnamed mineral 0 of Cabri, 1972).L.J.C. Sn 13.0,As 8.8, Pb 6.0, Sb 1.6; total 98.3 percent,Cu, Au not detected.Indexed as tetragonal,a = 3.99, c: 3.655A from an P al ladium S t ib ioslannoar senide elevenline powder pattern, strongestlines 2.23 l0 222 | 5 , .992 400, Pdr*,(As,Sn,Sb) t.476 4 432 Color in reflected light, birereflectance,and anisotropy same as Probe analysisof one grain gavePd 78.2;As 12.3;Sn 6.8;Sb 6.3; for (Pd,Pt)3*,(Sn,As) mineral. Also grain size,textures, and associ- total 103.6percent, Pt,Pb not detected.Indexed as orthorhombic 4 ated minerals.R percentin air 460 nm 56.8,550 nm 56.4, 580 nm = 8.107, b = 5.625,c = 4.360A lrom a l0line powder patternwith 57.4, 640 nm 59.9. VHN,' : 423(396-449), VHNuo : strongestlines 2.30 l0 121,2.18 l0 002, 1.1264 133, 1.6213 420 515(s04-519). In reflected light (air?) the mineral is brownish grey, weakly Discussion. Appears to be the same mineral as anisotropic, isotropic in certain sections.R percent in air 460 nm (Pd,Pt)r*"(Sn,As), which itself is not well enough characterizedto 41.2, 550 nm 49.4,580 nm 51.4,640 nm 54.5. VHN,. = 423 determine if it is a unique species The name is unjustified. L.J.C. (396-449),VHNro = 515(503-519). Occurs as rounded, elongated grains and as hexagonal euhedral N ic ke l- P al ladium A rse nides crystals ranging from 5 to 50 microns in diameter with an average - polarite, Ag-Au alloys, (Ni,Pd),*,As, and B (Ni,Pd),*,As, size of l5 microns. Associated minerals: sperrylite, electrum, other PGM, chalcopyrite, talnakhite, silicates, (a) (Ni,Pd)u*,As" Probe analysesgave Pd 44.0, 45.9, Ni 29.0, sphalerite, and galena. -; -,0.4; 27.5;Cu 0.2, Pr As 28.2,26.6;rotals 101.4,100.4 percent. Discussion. Single crystal work is required to confirm ortho- : Indexed as hexagonal(second analysis) with a 9.910,c = 6 601 rhombic symmetry becausepowder pattern is very similar to that A from ten_powder lines of w\ich the strongest are 2.19 l0 0003, of palladoarsenide, PdzAs (Am. Mineral., 60, 162). The name is 1.989l0 2242,2.65 I 2022,3031, and 2.29 6 2241,1232. unjustified. L.J.C. In reflectedlight (air?) the mineral is pale lilac grey with brown- ish or roseatetinge. Weakly bireflectant in air, weakly anisotropic Palladium Stannide with brownish-grey tones. percent R in air 460 nm 48.6, 550 nm Pdr*rSn 50.3,580 nm 51.3,640 nm 53.7. VHN,. :463(440484) and VHN,o : 527(482-597) for first and second analysis, respectively. Probe analysisof one grain gave Pd 60.6; Sn 35.5; total 96.4 Occasional etching with I : I HCl, negative to other reagents. percent;Pt, Cu, Pb not detected.Orthorhombic, a : 8.11 , b : 5.65, Occurs as isometric and elongated,lensoid, polygonal crystalline c = 4.32 A and strongestpowder lines for the analyzedgrain2.30 grains, twins, which range from one to 100 microns in diameter lO 121,2.178 002,1.2786 303,2.395 021. Anothergrain gavea and average l0-20 microns. Associated minerals: polarite, Ag-Au better powder pattern with a = 8.1O4,b : 5.643,c : 4.312 A. alloys, sperrylite, other PGM, chalcopyrite, talnakhite, cubanite, In reflected light (air?) the mineral is light grey with a roseateto magnetite, silicates,sperrylite, and galena creamy bireflectance. Strongly anisotropic light grey, bluish to (b) B-(Ni,Pd),*,As. Probe analysisof one grain gave Ni 56.5; reddish tinge Polysynthetically twinned. R'p and R'g percent in air Pd 12.3;As 34.1;total 1028 percent. 460 nm 42.2,4'7.4;550nm 462, 51.5;580 nm 48.8,54.3;640 nm The color under reflected light, bireflectance, anisotropism, 54.1, 59.2; VHNrc = 291-449. grain size, textures and mineral associations the same as for the Occurs as elongated anhedral grains averaging 40 microns in (Ni,Pd)"r,As, mineral. diameter and ranging from 2 to 200 microns. Associated minerals: Discussion Not enough data to differentiate between (p) and sperrylite, (Pt,Pd),*,Sn, Ag-Au alloys, chalcopyrite, pyrrhotite, (b). The powder pattern of (a) is very similar to synthetic Ni,As, of magnetite,silicates. Heyding and Calvert (A.S.T.M. 10-271)which was indexed as Discussion. The mineral appears to be identical to paolovite, hexagonala = 670, c = 12.41A. Single crystal data required. PdrSn(Am Mineral.,59, l33l). L.J,C. L.J.C. Palladium Plumboarsenide Palladium Bismuthide Pd,**(As,Pb), Pd1*,Bi Probe analysesof two samplesgave Pd 29.8,3l 8; Ag -, I l; Pb Probe analysisof onegrain gavePd 31.6;Pb 1.6;Ag 1.5;Au 0.5; 50.4,50.2;As2l.4, 19.8;totals 101.6, l02.5percent. l8-linepowder Cu 0.3; Bi 6l.l; Te 0.6; total 97 2 percent.Indexed as hexagonal patternindexed as orthorhombica : 7.180.b:8.619,c = 10.662 from elevenpowder lines,a: 4.20,c : 5.64A, strongestlines 3.05 A. Strongestlines 2.65 lO 004;2.169 040,124;2.506 104;2.236 l0 t0t1,2.248 r0t2,2.09'7I1120, t.t'7853031,1 124. 3l l ; | 667 6 150,044; 1.3856 2 17 In reflected light (air?) the mineral is pale yellowish cream with In reflected light (air?) the mineral is greyish white next to noticeable bireflectance,weakly to distinctly anisotropic with yel- chalcopyrite and pale grey next to Ag-Au alloy. It is anisotropic lowish-grey tones. R percent in air 460 nm 47.9, 550 nm 57.0, 580 with yellowish grey tones. R percent in air for first analysis460 nm nm 59.2,640 nm 63.0. VHNro = 281(272-286). 542,550 nm 56.9, 580 nm 57.'1,640nm 59.6. VHN- : 241 Occurs as elongated, oval euhedral grains and as fringes which (228-250). Etched by 20 percent FeCl', conc. HNO"; weakly etched 182 NEW MINERAL NAMES

by Hgclr; negative to other reagents.Occurs as isometric, almost from W gave(rzinge): Pd 27-30.3,Ni 0-0.8,Sb 23-33.9, Bi 0-20,Te square, and oval crystals. Grains average 70 microns in diameter 3l-39.7, sum 966-105.1percent corresponding to (Pdoer-0eo and range from 40 to 150 microns Associated minerals: Ag-Au Nio-o ouXSbo?2 o ruTeor, , ou). ""Bio-o alloys, Pd.Pb, (Ni,Pd),*,As, (Pd,Ptl*,Sn, and chalcopyrite The X-ray powder pattern is indexable on the basis of a cubic Discussion Single crystal study required, especially to deter- cell with a = 6.572A lalso 6 557-6.581A, reflectingvariations in mine if approximate As:Pb of I : I is significant. The uncertain Sb:Bi) The strongestX-ray lines(36 given,including B- lines)are: stoichiometry may be due to analytical errors. L.J.C. 2.940 l0 210, 21I A; 2.680E 2l I ; |.983 9 3I I: | .755 7 32l; |.267 6 333,51 I : 1.162 6 440: 1.066 1 532,61 L Newly Reported Minerals from China, I The mineral was found in concentrates of crushed ores as lr- regularto short prismaticgrains (0.07-0.10 mm). Bright steelgray Platinum Metal Mineral ResearchGroup, Microprobe Analysis with a light brown tint, metallic luster. Surfacesare often tarnished Laboratory, X-ray Powder Photograph Laboratory, and Mineral yellowish-brown. Brittle with two sets of imperfect cleavage. In Dressing Laboratory, Kweiyang Institute of Geochemistry, reflected light it is bright white with a faint blue tint. Isotropic, Academia Sinica (1974) Tellurostibnideof palladium and nickel reflectance: 57.3 percent (590 nm). The mineral from W is white and other new minerals and varieties of platinum metals. and sometimes milky yellow. Reflectance 480 nm; 54.4; 500 nm, Geochimica,3, 169-l8l (in Chinesewith English abstract).(lt is 542:520 nm. 54.0:540 nm,53,9;560 nm,54.0; 580 nm,54.9;600 not stated whether or whsre type materials are preserved. GYC, nm, 54.0; 620 nm, 54.0; 64U nm, 54.0; 660 nm, 54.7 percent. LJC). VHNE = 165 kE/mm2 and VHNro = 267 kg/mm'z, equivalent to 3.5-4 0 on Moh's scale. : H exas t ib iopalladi te, Pd *Sbu ( Sudburyi te) The mineral occurs as inclusions in gersdorffite-cobaltite, pyr- Microprobe analysisgave: Pd 41,40; Sb 60, 58; sum 101,98per- rhotite, chalcopyrite, and pentlandite in Cu-Ni-sulfide deposits in cent, correspondingto Pd.",Sbrooand PdrrnSbroo. Y, which is a serpentinite body intruded into a Permian formation The X-ray powder pattern is indexableon the basisof a hex- of metamorphicrocks in SouthwesternChina. It is also found as a agonalcell with a : 4.07,c = 5 57 A. The strongestX-ray lines(19 relativelycommon mineral in Cu-Ni-sulfidedeposits in W, which is given,including 3 B-lines)are: 2970 8 I0l,2.184 l0 102,2.0306 mainly a clinopyroxeniteintruding into sandyshales and volcanics 1r0, | 644 3 u2, 1.4903 202, I t49 5 301. of Permian age in NortheasternChina. Pale brownish gray, brittle, with metallic luster. Under reflected Discussion. The mineral is the antimony analogue of = light it is yellowishwhite. Weakly anisotropic.Reflectance 66 I michenerite (PdBiTe), with PdSbTe as an end-member.GYC, : percent (590 nm). VHN' 210 kg/mm", corresponding to 4.0 on LJC. Moh's scale.The mineral was found as short prismatrcgrains in Unnamed Platinum Group Minerals the heavy concentrates of crushed ores. The mineral occurs in Cu-Ni-sulfide deposits in Y (see l. (Pd,Ni)(Te,Sb,Bi),reported as (Pd,Ni)(Sb,Bi,Te) testibiopalladite)in SouthwesternChina. Probeanalysis gave Pd,4l.2,Ni I I, Sb 23 0,Bi 4.3,Te30 6,sum 100.2 percent, corresponding to (Pdo"uNioo.)(SbonrBioo"Teorr). Discussion The name is unnecessaryas the mineral is clearly Bright yellow under reflected light. lsotropic; reflectance = 66.4 identical to sudburyite (PdSb, Can. Mineral. 12,275-279, 19'74). percent (590 nm ), VHN, = 225 kg/mm' . Only one grain has been GYC, LJC. found in Y (see testibiopalladite)as a subhedral inclusion (43 micron) in gersdorffite. H exatestibiopanickel ite, ( N i, Pd),SbTe Microprobe analysis gave: Ni 20, Pd 16, Sb 31, Bi 0.1, Te 2. Pd,Sb,(Te,Bi), reported as Pdz(Sb,Te)e 33, sum 100.I percent, corresponding to (Ni, ,Pdq 66)(Sbo oe) ""Bio Probe analysisgave: Pd 37, Sb 4 I, Bi 5, Te 17,sum 100percent, Ter oo. correspondingto Pd, ,(Sb,oBio ,Teo,). Bright white with a rosetint, The X-ray powder pattern is indexable on the basisof a hex- Strongly anisotropic Pleochroic: grayish blue-orange yellow. agonal cell with a : 3.98, : 5.35 (19 c A. StrongestX-ray lines Distinct bireflectance:white with a rosetint-white with a gray tint. given, including 3 p-lines) are: 2.890 l0 I0l 2 1098 102, | 7 , .99O R'g and iR'p: 520nm, 56.1,52.4;580nm,60.7, 57 4;66Onm,64.2, I 10, 1.6354 201, 1.5805 10J, 1.1086, diffuse 114. 61.2 percent Hardnessless than that ofchalcopyrite.The mineral The mineralis weakly anisotropic,pale yellow yellowish to white occurs in W (seetestibiopalladite), as inclusions(18 microns) in in reflectedlight. Reflectance: 58.2-62.3percent (590 nm). VHNu chalcopyrite. = 75 kg/mm" and VHN, : 108kglmm'z, equivalent to 2.0-2.2on Moh's scale. 3. Ni,SbTe,, reported as (Ni,Pd),(Sb,Bi,Te), The mineral occurs in Cu-Ni-sulfide deposits in Y (see Probe analysisgave: Ni 22, Pd 3, Sb 26, Bi I, Te 46, sum 98 per- testibiopalladite)in SouthwesternChina. In heavyconcentrates of cent,corresponding to (Ni, e4Pdorb)(Sbr ,rBio orTe,.). The mineral crushedores it is often found with testibiopalladite. is yellow under reflectedlight, isotropic (?). Reflectance: 59.8 per- Discussion. The mineral appears to be new a speciesand may be cent (590 nm). VHNu : 280 kglmm'. Only one grain has been structurally related to imgreite (NiTe?, lz Mineral 49, ll5l). found in Y as an inclusionintergrown with pyrrhotiteand pentlan- The name is awkward. GYC, LJC. dite in gersdorffite

Testibiopalladite, Pd( S b,Bi )Te 4. Pd,Sb Microprobe analysisof two grainsfrom Y, usingpure metalsas Probe analysesgave: Pd 63.1, 60.3, 61; Sb 3%7, 37.3, 36; sum standards,gave: Pd 25, 26; Ni l, -; Sb 20, 2l; Bi 19, l7; Te 35, 36; 100.8, 97.6, 97 percent, corresponding to Pd, rrSb, eq,Pdr.6Sb, oo, sum 100, 100 percent, corresponding to (Pdo""Nioou)(Sbo". Pd' ensb'oo. The mineral is gray to pinkish gray with distinct bire- BiornTe,or)and Pdo",(Sbo"uBioroTe,ou).Six analysesof material flectance. Strongly anisotropic, pleochroic: dull purple-grayish NEW MINERAL NAMES 183

red Reflectance: 48.4 (520 nm), 52.8 (580 nm), 56.1 percent pyrrhotite. Found in W as irregulargrains (5 X 32 microns) in the (660 nm). Hardness similar to that of chalcopyrite. The min- intersticesbetween pyrrhotite and silicates eral occurs in both W (intergrown with native gold) and Y. 12. PddTe,As) 5. PdSb Probeanalysis gave: Pd 6 t.5, Hg 6.l, Te 20 4, As I l. l, sum 99 I Probeanalyses gave: Pd 499,504,46.9,43; Ni -, -, 0.5, l; Sb percent,corresponding to (Pd,,rHgo,o)(Teo urAso nr). Pale pink un- 49.3,50.9,45 4,54; Bi -, -, 4 l, -; Te -, -, l 5, 3: sums99.2, 101.3, der reflectedlight. Strong bireflectance:pale pink-bright brownish 98.4, l0l percent, corresponding to Pdr rbsbl oo,Pdrr3Sb1 00, yellow Strongly anisotropic. Pleochroic;yellowish pink-bluish (Pd1osNio o,)(Sbo rrBio orTeo or), and (Pdo.uNioonXSbo *Teo or). The pink Reflectanceapproaches that of sperrylite.Found in a Cu- mineral from W is rose yellow with strong bireflecdancs:orange sulfide deposit in W, often intergrown with sperrylite. yellow-bright yellowish brown. Strongly anisotropic.Pleochroic: grayish yellow-dull purple. Reflectance:50.0 (520 nm), 52 2 f580 13. Pd,(As,Sb),reported as PddSb,As) nm), 53.4 percent(650 nm). Hardnessmoderate. The mineral oc- Probeanalysis gave: Pd 73.2,Sb 9.1,Te 4.5,As l5 5, sum 102.3 curs in both W and Y as short prismatic crystals(20-50 microns) in percent, corresponding 10 Pd,,r(SboroTeo ,,Aso ur). Distinctly intersticesof pentlanditeand silicatesor as rims around pyrrhotite. anisotropic,gray to pale gray with a pinkish brown tint under The mineral was also reported to occur in X (no detailsgiven) in reflectedlight Pleochroic:purplish gray-pinkishgray Reflectance Northern China, associatedwith chalcopyrite and electrum. = 53.6(520 nm), 52.3 (580 nm), 51.3percent (660 nm). Hardness 6. Pd,Te approaches that of chalcopyrite. Found in W, often intergrown with native gold Reported as a subspecies,intermediate between Probe analysisgave: Pd 71.9, Te 26.7, sum 98.6 percent,cor- palladoarsenide (Pd2As, Am. Mineral.60, 162, 1975) and the min- responding to Pd. White with a yellow tint under reflected ouTe,oo. eral Pd,Sb found in W and Y. light. Weakly anisotropic. Reflectancegreater than that of pyrite. Medium hardness.The mineral occursin W as small grayishyel- Discussion Data for all the above minerals are insufficient for low grains intergrown with other telluridesof platinum and pal- full characterization. Nos. 2, 3, 6, 12 may be compositionally ladium unique. No. 4 may be a Pt-free variety of the unnamed mineral (Pd,Pt,Ni),(Sb,Sn)(Am Mineral. 60,739; 1975).No. 5 could be 7. (Pd,PtITe sudburyite(Can Mineral.,12,275-279,1974) No. 7 is probably a Probeanalysis gave: Pd 62 l,Pt 12.4,Te 28.6,sum 103.I percent, Pt-bearingvariety of No. 6. No. 8 is probably identicalto kotul- correspondingto (Pdr,6rPtor8)Te, oo. White with a pink tint. Weak skite (Am. Mineral.48, ll8l). Analysis of No. 9 is too poor to bireflectance. Strongly anisotropic. Pleochroic: reddish establish stoichiometry. No. l0 is compositionally similar to brown-grayish blue. Reflectance similar to that of pyrite. merenskyite.No. I I appears to be unique but the composition Moderate hardness Found in W with other tellurides.often in- is not known in the synthetic Pd-Te system. No. l3 appears to be tergrown with moncheite. antimonian palladoarsenide(Am Mineral. ffi, 162, 1975).GYC, LJC. 8. PdTe Newly Reported Minerals from China, II Probe analysisgave: Pd 40.2 Hg l.l, Bi 8.5, Te 48 8, sum 98.6 percent, correspondingto (PdoroHgoo,)(Bioo"Teo.,)Pale yellow Comments under reflectedlight Weakty anisotropic Pleochroic: yellow-gray. It is not stated whether or where type materials are preserved. Reflectance: 56 3 (520 nm), 58.3(580 nm), 58.0percent (650 nm). The mineralsare named after type localitiesabout which there is Hardnesssimilar to that of chalcopyrite.Found in W with other no information given The mineral namesare derivedfrom Chinese tellurides. charactersaccording to the P'in-Yin Romanization Systemwhich e. (Pd,Ni)(Bi,Te) (?) is widely used in the People'sRepublic of China. However, the Wade-Giles Romanization System is more widely used in the Probe analysisgave: Pd 24.4,Ni 7.7, Bi 10.9,Te 51.4,sum 94.4 western scientific community, and to facilitate proper pronuncia- percent, corresponding to (PdourNio rr)(Bio ,,Teo Isotropic, "r). tion, a list of the Wade-Gilesequivalents is given below: white in reflectedlight. Reflectance= 57.8 (520 nm), 57.9 (580 nm), 59.2 percent(660 nm). Harder than pyrrhotite. Found in W Yixunite Yi. hsiin.ite as cubic grains (5 X 7 microns) in pyrrhotite. Dayingite Ta .ying.ite

10. PdTe, Xingzhongite Hsing chung.ite Probeanalysis gave: Pd 26.8,Sb 6.5,Bi 10,Te 58,sum l0l.3 per- Malanite Ma lan ite cent.corresponding to Pdor,(Sbo rBio 2Te, Isotropic, pure white "). under reflected light. Reflectance = 63.8 (520 nm),62.3 (S80 nm), Daomanite Tao. ma. ite 66.3 percent(650 nm). Harder than chalcopyrite.Only one grain Hongshiite Hung. Shih. ite has been found in W as an euhedral tabular crystal (14 x 23 microns) in the interstices between chalcopyrite and silicates. Guanglinite K uang lin . ite

I l PdTe, Fengluanite Feng.luan. ite

Probe analysisgave: Pd 21.0, Te 78 0, sum 99.0 percent, cor- Yanzhongite Yen chung.ite respondingto PdorrTeroo.Weakly anisotropic,white with a rose tint under reflected light Pleochroic: pale blue-yellowish gray. Hongquiite Hung chi ite Reffectancelarger than that of pyrite. Hardnesssimilar to that of (GYC) 184 NEW MINERAL NAMES

-, -, Yu Tsu-HsreNc, LrN Suu-JEN,Cueo Plo, Fexc CsrNc-SuNc, ideally Pd,(As,Sb). Other analysesgave: P d 72.5, 7 9.2, 68 4; Pr rNo HulNc Cur-SnuN (1974) A preliminary study of some new 4.4: As9.2, 10.0,ll.2; Sb 11.0,9.5,9.4; sums 92.7,98.7,93 4 per- mineralsof the platinum group and another associatednew one cent. in platinum-bearing intrusions in a region in China. Acta Geol. The mineralis orthorhombicwith a: 11.03.b :3.37 and c: Sin. 2,202-218 (in Chinese with English abstract). 6. I 3 A The strongest X-ray lines (24 given) are: 2 37 10 302, 2.18 100 500, t.652 30 t20, 1.64030 403, 1.54930 221, 1.25940 504 ( Daomanite, Cu,Pt )rAsS, Color pale yellow, luster metallic. Habit platy, granular Some grains show euhedral hexagonalcrystal outline. Grain size0.1-l Electron microprobe analysisgave: Pt 45.2,Cu 20.1, As 18.8,S mm. The mineral has one perfect cleavage and breaks easily into I 5.3, sum 99.4 percent, corresponding to Cu, z"uPto oorSrsoe or "r"ASr perfect tabular fragments. Grain surfaces are uneven, sometimes ideally (Cu,Pt)rAsS,.Other analysesgave: Pt 45.0,42.2;Cu 21.0, show step-like development. Non-magnetic. 19.2;As 27.4, l'1.3; S 13.2,14.l; sums 106.6,92.8percent. The Yellow under reflectedlight. Weakly anisotropic. Parallel extinc- mineral is not attacked by HCl, HNO., or HrPOn. tion Reflectancesare: 466 nm, 51.4; 544 nm,53.6;589 nm,54.0; The mineral is orthorhombic with a = 8.085,b = 5.905,and c : 656 nm, 56.0 percent. VHNro 20 : 657-660 kglsq mm. 7.314A. StrongestX-ray lines(41 given) aret7.3270 001, 3.2O60 Fengluaniteand guangliniteare relativelycommon mineralsin 0I 2, 3.01100 2 r r, 20960 203, 1.835 100 r23, | 28t60 34 t, t.o79EO various types of platinum ores in the basic-ultrabasic rocks, par- 443,t.ffi3 60 052, t52,0.9982 60 444,09906 10 605,643. ticularly in the Hung district, in a certain region in China. Occur- Color steel gray with a yellow tint, silver grayish white on fresh rence and mineral associationsare the same as given for hongshiite surfaces, luster metallic, habit tabular. Grain size 0.2-0.3 mm in the Hung district, and as given for yixunite, dayingite, and Four setsofcleavages, from most to leastperfect, are {100},{010}, daomanite in the Tao district. In the Hung district the mineral is {001} tll0}. Non-magnetic,brittle. Fracture step-likeor uneven. often found to replace diopside and biotite and as pseudomorphs Under reflected light pale greenish yellow, strongly anisotropic, after biotite. pleochroic: gold yellow and grayish green. Parallel extinction..Rg and Rp are:466 nm, 40.5,34.6:544nm, 43.1,37.2;589nm,44.1, Discussion. Unnecessary name for antimonian guanglinite (Pd'As). 39.2;656 nm 45.2,37.2 percent VHNro-2. : 169-175kglsq mm. See discussion on guanglinite. The d value (2.18 A) of The mineral was found in the Tao and Ma (apparently code reflection110 is apparently in error. GYC,LJC. names-GYC) districts in a certain region in In the Tao China Guanglinite, Pd"As district the occurrence and mineral associations are the same as gave: -, As Sb -, those for yixunite and dayingite. In the Ma district, the mineral Electronmicroprobe analysis Pd 80.3,Pt 20.1, PdrAs occurs in the olivine pyroxenite type of platinum ores related to sum 1004 percent, corresponding to PdrAsrouror ideally = Cu-sulfide mineralization, associated with olivine, diopside, ser- The mineralis orthorhombicwith a 10.83,b:3.33, and c: pentine, chlorite, bornite, chalcopyrite, magnetite, pyrite, gold, 6.07 A. The strongestX-ray lines(26 given) are:2.3610 302,2.18 sperrylite, cooperite, moncheite, cuproplatinum, polyxene, and a r00 500, | .242 50 504, 0.8595 40, 0.8265 50, 0 8050 40, 0.7936 40, new mineral yanzhongite. The mineral is often found replacing 0.7846 40. bornite. Physical properties of guanglinite were reported to be very guanglinite is Dtscassion. The mineral appears to be a new species. The similar to those of fengluanite, except that usually ideal formula, based on data reported, may also be written as masslve. under reflectedlight. Weakly anisotropic Parallel extinc- CuPtAsS,. GYC,LJC. Yellow tion Polisheswell. Reflectancesare: 466 nm, 45.0; 544 nm,47.1; percent.VHNro = kglsq Dayingite, Cu( Co,pt )"5, 589 nm, 49.4;656 nm, 48.6 20 635-660 mm. Electron microprobe analysisgave: Cu 17.3,Co 14.6,Pt 38.2,S Guanglinite occurs as a relatively common mineral in various 29.2, sum 99.3 percent, corresponding to Cu, ,"Co, o.Pto.""Sn * or typesof platinum ores in the basic-ultrabasicrocks, particularly in ideally Cu(Co,Pt)rS..Two additionalanalyses gave: Cu 15.5, 14.0; the Hung district, in a certain region in China, associatedwith the Co 13.2,13.0; Pt 35.1,32.3: S 24.2,31.7;sums 88.0, 91.0 percent. same suite of minerals as given for hongshiite The mineral is cubic, Fm3m with a = 9.697\9) A. The strongest X-ray fines (17 given) are:5.71 E0 111,3.06 80 3l I,2.435 lO0 400, Discussion. The mineral appears to be unique. The powder 1.869 90 5r r, t.7 30 70 440. 1.490 & 53 3. 0.9928 il 844. 0.8495 40 data bear stong similarity to those of synthetic Pd'As which is 970. tetragonal with a : 9.9'14(2)and c : 4 522(2) A isaini et al, 1974, The mineral occurs as perfect dodecahedral crystals, sometimes Can. J. Chem. 42,620-629) Further single crystal work is neces- modified by cube (size not given). Bright white to silver white with sary. GYC,LJC. metallic luster. Cleavage absent, brittle. Streak steel gray. White Hongquiite, TiO under reflected light. Reflectancesare: 466 nm, 40.5; 544 nm,4l.3; '14.0, Electron microprobe analysis gave: Ti Fe 0.5, O 25 589 nm, 42.8:656 nm, 44.5 percent.Isotropic. VHN,. : 310 kg,/sq (theoretical), sum 99.5 percent, corresponding to (TiorrFefrl,)O mm. (calculated by GYC) or ideally TiO. The presenceof O was con- Occurrence and associatedminerals are same as for yixunite. firmed by probe analysis. Discussion. The mineral appears to be a new species.The ideal The mineral is cubic, Fm3m with a = 4.293\5) A. which is signifi- formula, basedon data reported, may also be written as CuCoPtSo, cantly larger than that of syntheticTiO (a = 4.177,Asrv 8-l 17) (Cu,Co,Pt)rSoor (Cu,Pt)rCoS. GYC,LJC. but is comparable to that of wustite (a : 4.284). The powder pat- tern containsseven lines: 2.479 50 I I I,2.144 100200, 1.52970220, : Fengluanite, Pd"(As,Sb )( Antimonian Guanglinite ) 1.29750 -r11, r.081 80 400, 0.9850 r0 331,0.9600 20 420. Electron microprobe analysis gave: Pd 76.0, Pt-, As l0 I, Sb The mineral is bright white with metallic luster and occurs as 13.2, sum 99.3 percent, corresponding to Pd.(Asou3uSboaus)or perfect cubo-octahedral crystals (0 2-0 3 mm). Non-magnetic, NEW MINERAL NAMES 185 brittle White with a pink tint under reflected light. Isotropic, with 70422, t.506 60 530,| 34060 541,I 208100 640, t.03480 822, distinct red internal reflection Reflectancesare 466 nm,28 6;544 r.02080 8.t0. nm,27 .5;589 nm, 35.8;656 nm,32 6 percent.VHN,oo : 710 kg,/sq The mineral is steelgray with metallic luster. 11often occurs as a mm rim (0.1 mm wide) around iridosmine. Under reflectedlight the The mineral occurs in platinum ores of the garnet hornblende mineraf is bluish gray. Reflectancesare'.466 nm,40.5; 544 nm, pyroxenitetype in the Tao district in a certainregion in China, as- 38 9; 589 nm, 4l.l; 656 nm, 41.0 percent.Isotropic. VHN,' = 753 sociated with minerals similar to those given for yixunite and kglsq mm. daomanite. The mineral occursin the dunite type of platinum oresrelated to Discussion. The mineral appears to be unique. GYC,LJC. chromium mineralizationin a certain region in China, associated with olivine, serpentine,talc, chromite, magnetite, and minor Hongshiite, PtCuAs pyrite Other platinum group minerals presentare polyxene,os- Electron microprobe analysisgave: Pt 610, Cu 15.7,As 23.0, miridium, iridosmine, osmium, iridium, erlichmanite,cooperite, sum 99.7 percent, corresponding to Ptro2cuo.slAsrooor ideally irarsite,osarsite, unnamed Ir-Ni sulfide,unnamed Os-Ni disulfide, PtCuAs. unnamed Rh-lr disulfide. : = The mineral is hexagonalwith a 10.51and c 4.59 A. The Discussion. The mineral appears to be a new species.The ideal strongest X-ray lines (34 given) are: 4.52 100 200, 2.211 100 3l l, formula, based on data reported, may also be written as I 9t0 1002t2, t.36t 40 303, t.34440512, l.15680423.0882270 Ir(Cu,Rh,Pb)S' GYC,LJC. 405.802.0.859180 661. Color bronze, luster metallic,habit irregular to massive.Grain Yanzhongile, PdTe-PdTe'-, ( = Kotulskite ) size0 l-0 mm. not Non-magnetic, 5 Cleavage observed. relatively Electron microprobe analysisof five grains gave (range): Pd brittle. Polisheswell. White with a yellow tint under reflectedlight. 45.0-486, Te 49.1-52.0,Bi--5.5, sum 99.3-103.3 percent, cor- Reflectancesare'. 466 nm, 48.l; 544 nm,45.6;589nm, 62 l: 656 nm, respondingto Pd,ooTeos.2-o"rrBiooouo or ideally, PdTe-PdTer ,. 65.3 percent. VHNs,,o = 483-482 kglsq mm" Two other analysesgave low sums (88.7 and 90.5 percent). The mineral in the actinolitized type occurs diopsidite of Analysis of argentianvarieties gave: Pd 42.0,41.4; Te 52.6, 52.6: Bi platinum in Hung (apparently deposits the a code name-GYC) 2.2, -; Ag 37, 5.3; sums 100.5,99.3 percent, correspondingto district in a certain region in China, associatedwith diopside,ac- Pdo,rAgo or"Teo o* and Pdo*rAgo ,,,Tgor.o. Analysis of an Hg- polydymite, "urBio tinolite, epidote, magnetite,bornite, cooperrte,sper- bearingvariety gave:Pd 40.3, Te 52.7,Hg 7.7, sum 100.7percent, rylite, vysotskite, and two new minerals, fengluanite and corresponding to Pdo o'Teo rrr. guanglinite.The "orHgo mineral is often found replacingcooperite and The mineral is hexagonalwith a : 4.12 and c = 5.62 A The replaced by fengluanite. strongestX-ray lines (15 given) are 3.037 100 101,2.84880 002, Discussion. The mineral appears to be a new species.The ideal 2.22210 r02,2.094 80 r r0, 2.0t460 20t, t.53060 202 formula, based on data reported, may also be written as The mineral was only found in polished sections,as droplets (Pt,Cu),As or (Pt,Cu),-,As. GYC,LJC. near the margin of bornite or in vein mineralssuch as hornblende. A few grains show hexagonalcross-sections. Grain sizeseveral tens M alanite, ( Cu,Pt,lr )5, of microns up to 0.I mm. Electron microprobe analysisgave: Cu 14.t, Ni 0.5, Fe I 5, Pt Pale yellow under reflected light. Bireflectance not observed. pleochroic:pale grayish 3 1.2,Ir I 9.l, Pd 0.66,S 32.7,sum 99.76percent, corresponding to Strongly anisotropic, bluish, white to dark grayish yellow. less that bornite Polisheswell Cuo22sPto ,uolro or"S, o* or ideally (Cu,Pt,lr)S, Hardness than of The mineral is cubic with a : 6 030(9)A. The strongestX-ray Reflectancesare'.466 nm, 53.7;544 nm,60.0; 589 nm,62 5;656 nm, : lines(17 given)are: 5.86E0 100,3.00 10 200,2.83360 210,2 501 63 2 percent.VHN5 15.8 kg,/sq mm. Reflectancesand VHN's 1002t t, 1.92t 10 3t0, 1.76t tN 222, 1.01450 53t. 0.785470 73t. given for Hg-, Ag-, and Bi-bearing varieties are somewhat The mineral is bright white with a faint brown tint. Habit different garnet pyroxenite granular.Grain sizenot given.Non-magnetic. Polishes well. Bright The mineral occurs in the hornblende type of white under reflected light, isotropic. platinum oresin the Tao district,and in the olivinepyroxenite type The mineral occurs in the peridotite type of platinum ores of platinum ores in the Ma district, associatedwith minerals given relatedto Cu-Ni sulfidesin a certain region in China, associated similar to those for daomanite. In the Tao district the with with olivine, orthopyroxenes! pyroxenes, serpentine,chlorites, mineral is closely associated bornite and is often iound to pentlandite,pyrrhotite, bornite, magnetite,cooperite, sperrylite, replacebornite. cuproplatinum, and platinum. Discwsion Unnecessary name for kotulskite (Am. Mineral. (2.014) Discussion The mineral appears to be a new species.lt may be 48, I f 8l). The d value of reflection201 is apparentlyin er- related to syntheticCuSz, Pa3 with a : 5.79 A (Munson, 1966, ror. GYC-LJC. Inorgan Chem 5, 1296) and a : 5.'1897A (Taylor and Kullerud, 1972, Neues Jahrb Mineral. Monatsh, 458-463); and to Yixunite, Ptln fukuchilite, (Cu.FeSr)(lz. Mineral.55, l8l l) GYC,LJC. Electron microprobe analysisgave: Pt 660, In 33.5, sum 99.5 percent,corresponding to Pt1oolno s6 or ideallyPtln. The mineral is X ingzhongite, (I r,Cu,Rh )S not attacked by HCl, HNO', or H,PO.. Electron microprobe analysisgave: Ir 47.0, Os 3.0, Pt 4.0, Rh The mineral is cubic, FmSm with a = 3.948\5) A. The powder 7.6, Cu 10.0, Fe 2.5, Pb 8.0, S 17.1,sum 992 percent,cor- pattern contains nine lines:2.294 50 Ill, 1.99110 200, 1.39550 respondingto Irorr.Cuo rrnRho 1e6Pbo o?zsr oo or ideally (lr,Cu,Rh)S 220,t.t8't 100.t11, 1.140 30 222,0.987320 400,0.904840 331, The mineral is cubic or pseudocubicwith a : 8.72(l) A. The 0.882050 420,0.805'7 60422. strongestX-ray lines(29 given) are: 5.9960 I10,3.02EO220, l.'769 Color bright white with a blue tint, lustermetallic, cleavage ab- 186 NEW MINERAL NAMES sent, non-magnetic.Mineral grains are rounded (sizenot given) (2) (lr,Rh,Ni)s Under reflectedlight the mineral is bright white with a slight yellow Electron microprobe analysisgave: Ir 59.0,Rh l4 2, Pt 3.5, Ni tint, isotropic. Reflectancesare: 466 nm, 67.0; 544 nm,63.9; 589 4.9, S 17.5,sum 99.1 percent,corresponding to IroE6Rho252PLs. nm, 78.5; 656 nm, 75.8 percent.VHN,o : 1594 kg,/sg mm. Nio ,rus,oo or ideally (lr,Rh,Ni)S. The mineral occurs in the garnet hornblendepyroxenite type of Bluish gray under reflected light Strongly anisotropic platinum ores relatedto Cu-sulfidesin the Tao (GYC: apparentlya Pleochroic:dull red-bluishgreen Reflectancesare: 466 nm,40.8; code name) district in a certain region in China, associatedwith 544 nm, 39 5; 589 nm, 37 8; 656 nm, 41 570.VHNzo = 1650kg,zsq almandine, hornblende, diopside, augite, plagioclase,sphene, mm. apatite, chalcopyrite, bornite, magnetite, covellite, carrollite, The mineral occurs in chromium ores of the dunite type, as ex- goethite, columbite, cooperite, sperrylite,moncheite, and other solution product in osmiridium. new mineralsfengluanite, dayingite, yanzhongite, daomanite, and (3) (os,Ni)S, hongquiite Electron microprobe analysisgave: Os 48.5, Ni 15.0,Ru 5.0, S 31.7,sum 100.2percent, corresponding to Oso uroRuo0,"S, oo. Discussion The mineral appears to be a new speciesbut the "rrNio gray synthetic compound Ptln has not been reported for the Pt-ln Color bluish under reflected light. Isotroprc with high system.GYC,[JC, relief. Reflectancesare: 466 nm,42.0; 544 nm,44 5; 589 nm, 43.7; 656 lm, 38.9 percent VHN,' : 2575 kglsq mm. The mineral occurs as worm-like exsolution product (0.09 X 0.02 mm) in osmiridium in the chromium ores of the dunite type. Unnamed Sulfdes of Ir, Os, Rh, Ni (4) (lr,Rh)S, ( I ) (Nio,,lro ,u)S Electronmicroprobe analysisgave: Ir 58.0,Rh 14.5,S 29 5, sum Electron microprobe gave: analysis lr 41 0,39.0; Os2.0,2.5; Ni 1020 percent, corresponding to Iro.r"RhorooS, oo or ideally 14.3,ll.5: Fe 11.0,l0 l;Cu 57,4.5;Co2.8,0.7;S24.5,21.5;sum (lr,Rh)Sz. Bluish gray under reflectedlight. Isotropic with high l0l.4, 89 9 percent, the former corresponding to Iro r'Nio r,rF€oru. relief Reflectancesare: 466 nm,45.l; 544 nm,48.l;589 nm, 51 3; Cuo,,rCoo ou,S, oo, or ideally (Nio rulrorr)S or (Ni,Fe,Cu)o ru S. 656 nm, 47.1 percent VHN.. : 2300 kglsq mm. "rlro The strongestX-ray lines (45 given, unindexed)are: 3.33 100, The mineral occurs as euhedral rhombohedral crystals (10 2.982 80,2.894 15,2.798 60,2.046 60, I 917 80, | 748 t00, t.022 microns) in a matrix of polyxene in the chromium ores of the 50. dunite type Reddish brown in reflected light. Strongly anisotropic, Discussion (Nio 'rlro rr)S may be structurally unique if X-ray pleochroic:pale blue-firered. Reflectancesare: 466 nm,469:544 data reportedwere from pure material.(Ir,Rh,Ni)S and (lr,Rh)S, nm,43.7;589nm,43.4;656 nm,43.l percentVHN,o= 642k8/sq are compositionally unique. (Os,Ni)S, may be a nickeloan mm Cleavagenot observed.Polishes well. erlichmanite.On the other hand, the near l: I ratio of Os:Ni may The mineral oceursas rims around osmiridium,associated with be structurally significant We agree with the authors' statement polyxene,erlichmanite, irarsite and other minerals in chromium that further studies are necessarylor full characterization. GYC, ores in dunite. LJC.

NEW DATA

(Khuniite : Iranite) (Am Mineral.55,1088-1102), and iraniteisprobably theCu analog of hemihedrite,with a seriesprobably existing.Khuniite (,4m. S. A. Wllltnns (1974) The naturally occurring chromates of Mineral.55,1813, 58,562:59,633) is iranite, not hemihedrite.M.F, lead. Bull Brit Museum (Nat. Hist ), Mineral 2. 377-419.

Iranite was describedas PbCrO. . H"O (Am Mineral.48, l4l7), Errata but new analysesof type material show CuO 4.59, ZnO 0.20 per- cent (Sebarz, Iran); CuO 2.29, ZnO 043 percent (Seh-Changi, Am. Mineral.60,488. In thediscussion of natrofairchildite,"one Iran). The X-ray data for thesematch closely those for hemihedrite percentcleavage" should read "one perfectcleavage "