American Mineralogist, Volume 72, pages 1023-1028, 1987

NEW MINERAL NAMESX

Fn-q.NxC. HawrsoRNE, JoHN Jarunon, KnNNnrrr W. Buon, Ennsr A. J. Bunxr, Jonr- D. GnrcnoDoN PHrr-r-rrs,ANonrw C. Rounnrs, Ronnnr A. Scsnur,nn Jltvrns E. Snrcr,nv

Cameronite* corresponding to (on the basis of SO3 : l) (Mnoru,Mgoor- CaooorFeo*.f.r)"or77soo'6.39HrOor (on the basis of anhydrous A.C. Roberts, D.C. Harris, A.J. Criddle, W.W. Pinch (1986) O = 4) MnorroMgooorCaooorFeffir)rorrrSroorOo'6.42HrO.The Cameronite,a new copp€r-silvertelluride from the Good Hope ideal formula is (Mn,Mg)SO o'6H2Owith Mn > Mg and Z : 8. mine, Vulcan,Colorado. Can. Mineral., 24,379-384. DrA-rcA analysisshowed major peaksat 105 (HrO), 310 (HrO), Two closelymatching microprobe analysesof cameronite,ide- 987 (SO3),and 1000"C(SO.). Chvaleticeite(as described, magne- ally CurAgTe,o,give an averageof Cu 24.45,Ag 6.34,Te 69.I l, sian chvaleticeite)is the Mn-dominant member of the hexahy- sum 99.90 wt0/0,corresponding to Cu,oAg,orTe,oassuming 10 drite group. Te atoms. Single-crystalX-ray study indicates tetragonal sym- Material suitablefor single-crystalstudy was not found so that metry,a = 3a' : 12.695(2),c :7c' : 42.186(6)A, spacegroups unit-cell parameters were calculated by analogy with hexahy- P4r/mmc, P4rmc, or P4rc, D.",": 7.144 g/cm3 for the ideal drite. The mineral is monoclinic, space group C2/c wth a : formula with Z : 16. The strongest lines (26 given) are 10.05(2), b :7.24 (2),c : 24.3(1) A, B : 98.0(2f. The strongest 3.456(100)(307),2.t18(100X33.14,600), 1.804(60X637), lines of the Guinier powder film (32 given) are 5.45(8Xll2), | .377 (40)(63.2 r, 907), and r.222(40)(93. | 4). 4.9t(r0)(202), 4.47(SXl l 4), 3.98(8Xl I 4), 3.42(7)(206),3.25 - In hand specimen,cameronite resembles tetrahedrite: opaque, (8XI 16), and 2.967(7)(313). gray, metallic, brittle, subconchoidalfracture, no cleavage,cal- Chvaleticeiteforms white, relatively hard, fine-grainedaggre- culatedMohs' hardness37F4, VHNr.' 163 (150-170),VHN2oo gatesas well as pinkish to yellowish-greenloose coatings.Grains (151-172).In reflectedlight, slightlybireflectant and pleochroic do not exceed0.05 mm in longestdimension and are translucent from pale gray to pale brownish gray; anisotropism distinct with with a vitreousluster. H : I .5.D-"", : 1.84,D,",": 1.84.Soluble colors in air from medium gxay to slate gray to brownish gray. in water.Optically, only a' 1: 1.457(2)) and7' (: 1.506(2))could Reflectance spectra in air and in oil for six grains are given in be measuredbecause ofthe fine-grainednature ofthe material. 10-nm steps;average values in air in 50-nm stepsfrom 400 to In thin section the mineral is colorlessand transparent. 700nm for R,, Rj are23.8,28.2;27.8,31.6; 30.6, 33.2;31.9, Chvaleticeiteis a rare constituent ofa sulfate-rich paragenesis 33.5; 32.7, 33.3; 33.1, 32.8; 33.4, 32.3. Bireflectancepositive within the oxidation zone of an upper Proterozoic volcano-sed- from 400 to about 625 nm, negativefrom about 645 to 700 nm. imentary deposit of pyrite-manganeseores at Chvaletice, Bo- Color indices(2856 K) in air for R", Rl.arex .456-.457,.447- hemia, Czechoslovakia.It is associatedwith melanterite, Mg- .452;y .413-.414,.4Il-.412; Xo583-584; 546-580;{0/o 10.G- Mn melanterite (: magnesian,manganoan melanterite), epsom- 10.8;1.9-6.3. ite, Mg-Fe mallardite (: magnesian,ferroan mallardite), Mg- Cameronitemasses up to 2 x 2 mm are associatedwith native jokokuite (: magnesianjokokuite), Mg-ilesite 1: magnesianiles- tellurium, rickardite, vulcanite, arsenopyrite, and pyrite. The ite), rozenite, copiapite, and gypsum. Chvaleticeiteforms by de- name is for E. N. Cameron,who with I. M. Threadgoldoriginally hydration of Mg-mallardite (: magnesianmallardite) and de- identified and partly characterizedthe mineral in 1961 (Am. hydratesto Mg-jokokuite (: magnesianjokokuite). The name is Mineral., 46, 258-268). Type material is in severalrepositories, for the locality. Type material is deposited at the Geological including the National Mineral Collection at the GeologicalSur- Survey in Prague,Czechoslovakia. vey of Canada, Ottawa, the British Museum (Natural History), Discussion.The use of unapproved Mg-, Mn-, and Fe-modi- London, and the Pinch Mineralogical Museum, Rochester,New fied mineral names is deplorable.A.C.R. York. J.L.J. Erlianite* Chvaleticeite* X. Feng, R. Yang (1986) Erlianite, a new vanadium- and iron- J. Pa5ava,K. Breiter, M. Huka, J. Koreckf (1986) Chvaleticeite, bearing silicate mineral. Mineral. Mag., 50, 285-289. (Mn,Mg)SOo.6HrO, a new mineral. Neues Jahrb. Mineral. Analysisby colorimetric microanalysisyielded SiO, 38.80,FeO Monatsh., l2l-125. 26.6'7,Fe,O,21.26,Y2Os1.15, MgO 1.00,CaO 0.83, MnO 0.55, Classical chemical analysesgave MnO (by titration) 15.81, P,O50.051, KrO 0.079,NarO 0.09, Al,O3 0.19, TiOr 0.38,H,O* MgO (by EDTA titration) 6.41, CaO 0.04 (by aes), FeO trace, 7.65, HrO- 0.90, sum 99.60 wt0/0.Major-element contents were confirmed by electron-microprobe analysis. K, Na, Ca, P, and Fe,O, (by ees) 0.10, AlrO, trace, fvo OV e,rs) 0.005, NarO (by ees) 0.011, SO, (determinedgravimetrically as BaSOo)31.48, H- are assumed to be minor contaminants or interlayer ele- (Fe?r*ruFel-f"Mg' P,O, trace, HrO* (by modified Penfield method) 0.37, HrO (by ments. The provisional empirical formula is rr- Mno o,) ,r, ,o( Fe?f, Vo u,) oo( Si3473 Ti. 26Alo 2oFeflir ) ooOro- modified Penfieldmethod) 45.22,insoluble 0.36, sum 99.81 wt0/0, "ru (OH,O)08.The mineral is ",,soluble in dilute HCl. The rcA curve * Minerals marked with asterisks were approved before pub- is smooth, and the lack of a distinct exothermic peak showsthat lication by the Commission on New Minerals and Mineral the water contained in the mineral escapedslowly. The water Names, International Mineralogical Association content may thereforebe structural.The ore curve exhibits three 0003{04x/87/09 l 0- l 023$02.00 r023 t024 NEW MINERAL NAMES

exothermic peaks at 320,720, and 940"C. At 320"C the crystal Collection at the GeologicalSurvey ofCanada (64285and 64288) structure was destroyedand quartz was found; at 720'C no new and at the Royal Ontario Museum (M37547,M37548). R.A.S' phase was produced; and at 940'C the specimenwas converted to quartz and hematite. Data from Mrissbauerand infrared spec- Hydrodelhayelite* lroscopyare also presented. Selected-areaelectron-diffraction patterns gave unit-cell data M.D. Dorfman, M.I. Chiragov (1979) Hydrodelhayelite,a prod- of a:23.2, b : 9.2, c : 13.2A and indicatedthe spacegroup uct of supergenealteration of delhayelite.New Data on Min- to be Pmmn or Pm2rn. No suitable crystals have been found eralsofthe USSR.28, 172-175. for a single-crystal diffraction study. X-ray powder diffraction Chemical analysisgives SiOr 55.53, TiO, 0.01, Al,O, 8'46, data show the mineral to be orthorhombic with unit cell FerO, 0.65, MnO 0.18, Cp.O 12.72, SrO 0.22, MgO 0.21, a : 23.20(+0.0r),b : 9.20(+9.91;,c : 13.18(+0.01)A, Na,O 0.22,K,O 6.18,F 0.00,Cl 0.15,HrO* : 9.62,HrO- : V : 2813 A,, and Z : l. The strongestlines (27 given) are 5.85, sum -- 99.64 wt0/0,corresponding to the idealized formula l r.5(100x200,r01), 3.05(50x223,t30), 2.89(60x603,800,231), KCa.(Si,Al)O,'(OH)r' 6H,O. 2.6 | (60)(523,r 0 5,332,224), 2. s2(s0)(3 24,90 1, I l 5,03 3, 5 3 I and ), Hydrodefhayeliteis orthorhombic,a: 6.648,b :23.846, c : 2. 42(30)(424,803,6| 4,82r). 7.On A, spacegroup Pnm2r, Z : 2. The strongestlines in the Erlianite is found at the Harhada iron mine along the Jining- X-ray powder pattern are 2.923(100),3.069(75), 2.800(55), Erlian railway, Inner Mongolia Autonomous Region, People's 3.319(43), and 6.79(3 8). Republic of China. The mineral occurs sparingly in a fractured The mineral occurs as an alteration product ofdelhayelite in zone within the upper part of the deposit. Associatedminerals an ijolite-urtite pegmatite of the l(hibina alkaline massif; green- include magnetite,minnesotaite, stilpnomelane,deerite, quartz, ish-gray delhayelite alters to grayish-white hydrodelhayelite in siderite, albite, and other phases.The distribution of erlianite is the supergenezone. Hydrodelhayelite is grayish white urith a closely related to structural features, and it is often developed vitreous luster; H - 4. It has three orthogonal cleavageswith with red-brown stilpnomelane and dark brown minnesotaite along {0 I 0} very perfect, { 100} and {00 I } imperfect; D : 2.168 g/ cm3. shearplanes. It is biaxialwith a : 1.503,r : 1.518. Erlianite occursas opaque fibers, flakes, and lathlike aggregates. The name is for the composition and its relationship to del- Color black, streakbrownish gray,and luster silky. The grain size hayelite.F.C.H. is 1-2 cm. The mineral is not fluorescent;it has two perfect cleavageson {001} and {100}. H: 3.7, D."". : 3.11.In thin section the mineral is brown with moderate relief. Biaxial neg- Kimrobinsonite+ ative, a : 1.667,B : 1.674, 1 : 1.679, 2V : 56-59".The ori- B.W. Robinson (1985) Kimrobinsonite, a new tan- entation rs X : b, Y : c, and Z : a. Slightly pleochroic with Z E.H. Nickel, from WesternAustralia, and its associationwith (dark brown) = I (dark brown) > X (light brown). Weak dis- talum mineral Mineral., 23, 573-576. persion with r < V; either positive or negativeelongation. Most cesstibtantite.Can. elongate sections show parallel extinction, although extinction Electron-microprobeanalysis gave NarO 0.7, FeO 0.4, Sb'O3 anglesup to 29ohave been measured.J.E.S. 0.7,TarOr 78.5,NbrO5 6.6. Adjustedvalues from CHN micro- analysisgave HrO 8.9,CO, 4.2.The sum equals100.0 wt0/0. The ideal formula is (Ta,NbXOH)5-'"(O,CO3),with x = 1.2. X-ray analysis revealed a primitive isometric cell of the pe- Ilochelagaite* rovskitetype with a: 3.812(l)A, D",,": 6.865(law of Gladstone J.L. Jambor, A.P. Sabina,A.C. Roberts, M. Bonardi, D.R. Ow- andDale), Z: l. The strongestlines (21 given) are 3.808(100X100), ens, B.D. Sturman (1986) Hochelagaite,a new calcium-nio- 2.69 6 (7 0)(t 10), l .702(50X2 10), I .s s 5 (40)(2r r), r.eo1(30x200), bium oxide mineral from Montreal, Quebec. Can. Mineral., and2.202(20)(rLr). 24,449-453. Kimrobinsonite occursin aggregatesof cryptocrystallinewhite indiwiduals whose luster is dull and chalky; the material has a Microprobe analysesof four globulesof the mineral gave CaO white streak. Friable and soft (VHN 70 with a 20-g load), the 6.3-'7.7,SrO 0.0-1.2, Na,O 0.0-1.3,Nb,O5 71.7-78.3,TiO21.2- mineral is isotropic. 1.5,Al,O3 0.0-0.8, SiO, 0.,1-1.5,H,O Oy diff) 10.3-18.9,cor- The name honors Mr. Kim Robinson of Perth, who discovered (Ca,Na,Sr)(Nb,Ti,Si,Al)0O,,. : respondingto the formula nHrO (n the material in weatheredpegmatite near Mt. Holland in Western 8?. Australia (32"10'S,I 19%4'E).Kimrobinsonite occursintergrown grain Owing to the fine sizeof the mineral, single-crystalX-ray with cesstibtantiteas a mass in the skeletal void of a precursor powder pattern studies were not undertaken. The was indexed Ta-Sb mineral of unknown identity. Associatedminerals in the on the basisof similarity of the mineral with franconite and gave pegmatite include montmorillonite, K-feldspar, lithium-bearing : : : p : : a 19.88,b 12.83,c 6.44A, 93.2}.,with Z 4. The muscovite, tourmaline, and several rare element-bearing min- powder-diffraction six strongest lines are 10.0(100),3.1 15(80), erals. Type material residesat the Government Chemical Lab- 3.208(70), 5. 39(50), 4.96(50), and 2.799 (40). oratories of Western Australia, the British Museum of Natural Hochelagaiteoccurs as white globules, I 50 pm across,in vugs History, and the Smithsonian. K.W.B. of a dawsonite-bearingsill in the Franconlimestone quarry, Mon- treal, Quebec. The globules mainly consist of radiating bladed crystalswith a vitreous luster and white streak;H : 4. Optically Lapharnite* negativeand biaxialwith a : 1.72,0 : 1.81, : 1.82;2V-- z P.J. Dunn, D.R. Peacor,A.J. Criddle, R.B. Finkelman (1986) 35". Optical orientation: Z: c and X: D (perpendicularto the Laphamite, an arsenic selenide analogue of orpiment, from blades).D^. 2.85-2.94,Dd.: 2.82-2.88. ": burning anthracite deposits in Pennsylvania.Mineral. Mag., The mineral is named after the original name for Montreal 50,279-82. (Hochelaga). Holotype specimensare deposited in the National Mineral Analysis by electron microprobe gave As 47.0, Se 43.7, S 8.7, NEW MINERAL NAMES 1025 sum 99.4 w0/0.Although Sealways dominated, crystalsdisplayed growths. The mineral also occurs in radiating aggregates,up to variable Se:Sratios. The ideal formula is Asr(Se,S)r. I mm in diameter, ofscales and blades.Perfect {0001} cleavage. X-ray analysis reveals a monoclinic lattice, P2,/n, with a : The mineral is colorless,translucent, white or pale greenish 11.86(l),b : 9.7s6(9),c : 4.265(9),A,B : SO.rZ(rcD,Z : 4, yellow, with glassyluster (weakpearly luster on cleavageplanes); D.",":4.60, D.."" : 4.5(1)g/cm3. The strongestlines (42 given) white streak.H about 2. Solublein HNOr. Its optical properties are 2.833( 1 00)(22r,221), 2.77 3(80)(3 11,3 I I ), 4.8 7(70X020), are uniaxial negativewith o : 1.810,e : 1.745. 2.905(60X30 l, 30r), r.77 7 (sox05 1,032), and 1.709(50). The name is for Mathew Rogers,the first prospector in Tsu- Laphamite occursas dark red, resinous,prismatic crystals(< 5 meb. Type material is at the Institute of Mineralogy and Crystal mm). The larger crystals are nearly opaque. The streak is red Chemistry of Stuttgart (FRG) University and at the Smithsonian orange;crystals are flexible but not elastic. Cleavageon (010) is Institution in Washington. E,A.J.B. perfect. Laphamite is so malleable that hardnesscould only be determined as "soft." Crystals are tabular on (010), are elongate on [00], and are composedof the forms {100}, {ll0}, {101}, Monhoyalite* and Many of the crystals resembleresorbed {301}. solids. A.C. Roberts,A.P. Sabina,M. Bonardi,J.L. Jambor,R.A. Ra- In plane-polarizedlight (3200 K) in polished section,laphamite mik, B.D. Sturman, M.J. Carr (1986) Montroyalite, a new is moderately bireflectant from white gay. to Strong, fiery-red hydrated Sr-Al hydroxycarbonate from the Francon quarry, internal reflectionsand golden-yellowreflections along scratches Montreal,Quebec. Can. Mineral., 24,455-459. are characteristic.On (001), anisotropism is moderate with gray tints during rotation. Reflectancein air: 400 (34.4, 42.1),420 Microprobe analysesof the mineral (rce and rca for HrO and (33.9,41.0), 440 (33.8, 39.9),460 (33.8,38.75), 480 (33.2s, CO,) gaveAl,O3 28.8,5rO 27.7, CaO 1.1, CO29.2, H2O 24.6,F 37.45),500 (32.3),36.3), 520 (30.9,35.1), 540 (29.5, 34.0), 560 | 1.5,less O = F 4.84,sum 98.06w0/0, yielding an idealformula (28.45,33.r),s80 (27 .6,32.3),600 (26.9, 31.55), 620 (26.4,3r.r), Sr.Alr(CO,),{(OH),F}1610-l 1H,O. 640(26.4,30.9), 660 (26.3,30.6),680(26.1, 30.4), and 700 nm The material was not suitable for single-crystalX-ray studies. (25.9,30.1) (R, and R,, respectively).Color valuesfor the CIE Strongest eight lines in the powder pattern are 6.57(100), illuminantC areYo/o,29.0,33.5; ),o 480, 478;P,o/o,9.1,8.7 for 4.00(50),3.283(55), 3. l e0(50),2.356(45b), 2.862(40), 2.55 1(40b), R, and R., respectively. and 2.841(40). rEv reveals twin lamellae approximately 50 A Laphamite occurswith orpiment, arsenolite,and NHoAlFo on wide parallelto a net planewith translationsof7.14 and 6.55 A a clinker found at the surface near a gas vent from a burning and with an interrow angle of approximately 77.5'. coal-wastedump at Burnside, Northumberland County, Penn- Montroyalite occurs as white translucent l-mm-sized hemi- sylvania(40'46'14'N,76'34'12"W). The namehonors Dr. David spheresin cavities in a silicocarbonatitesill exposedat the Fran- M. Laphman, former Chief Mineralogist of the Pennsylvania con quarry, Montreal, Quebec.Indistinct fibers radiate from the GeologicalSurvey. Type material residesat the Smithsonian(cat- coresofthese hemispheres.Individual grains are irregular to lath alogueno. 163039)and at the British Museum (E. 1036, BM shaped,up to 20 pm long and 5 pm thick. Brittle. White streak. 1984,843). K.W.B. Uneven to splintery fracture and no visible cleavage.Soluble in 1:l HCI and fluoresceswhite under both long- and short-wave- lengthultraviolet light. H : 3.5, D^.",: 2.677.Montroyalite is Mathewrogersite* biaxialand negative, a: 1.515,B: 1.530,7:1.545;2V^"^": y parallel oflath; X and P. Keller, P.J. Dunn (1986) Mathewrogersit, ein neues Bleisili- 80',2V.t.: 89'. nearly to elongation Z make anglesof about 45" with the plane of the lath. katmineral von Tsumeb, Namibia. Neues Jahrb. Mineral. quartz, Monatsh., 203-208 (in German). Major associatedrninerals: albite, strontiodresserite, calcite, dawsonite,ankerite, and fluorite. Combined results of electron-microprobe analysis and ele- Montroyalite is named after the Monteregianhill Mont Royal, mental analyzer(for H,O) gave PbO 57.5, MgO 0.1, FeO 1.7, a landmark in Montreal. Type material is depositedin the Sys- CuO 0.8, A1rO35.9, GeO, 3.9, 9iO,26.2, HrO 1.9,sum 98.0 tematic ReferenceSeries of the National Mineral Collection at wt0/0,corresponding (on the basis of 12 Si atoms) to Pb, or(Feour- the Geological Survey ofCanada, Ottawa, under the catalogue CuorrMgoor)Ge, orAl3,rsi,roo, E,Hr r,, or idealizedPbr(Fe,Cu)Ge- numbers 64261 and 64265. R.A.S. Al3si"o35(oH,Hro!)6. Single-crystalX-ray study with several methods shows the mineralto be hexagonal,with possiblespace groupsR3, R3, R32, Moolooite* R3m, or R3m. The unit-cell parameterswere calculatedfrom 25 R.M. Clarke, I.R. Williams (1986) Moolooite, a naturally oc- diffraction lines of a Debye-Scherrerpattern: a : 8.457, c : curring hydrated copper oxalatefrom WesternAustralia. Min- 45.9'10L, Z: 3, D*rc: 4.76,D-",, : about 4.7 g,/cm3.The eral.Mag., 50, 295-298. strongest X-ray ditrraction lines (34 listed) are 15.30(70)- (003), 7.68(60X006),4.08(50X1 13,123), 3.257(l00Xl te,t2e), Partial microchemical analysisby CHN analyzer gaveC 14.10 2.860(50X0.2.l 0), 2.766(60)(21 t,13t, 321),2.439(50X300,330), and H 0.52o/ocorresponding to CrO, 42.3 and HrO 4.650/0.A 2.030(70x13l, 341,41r), 1.762(60X1.3.I 3,3.4. I 3). microchemical test for the oxalate radical gave a positive result. The mineral is a lead silicatewithout any structuralrelationship Cu and Si were detectedby microprobe scan but could not be with other minerals or chemical compounds. determined quantitatively owing to rapid sample degradation Mathewrogersiteoccurs in cavities of corroded lead-zinc ore under the electron beam. Si is variable and attributed to inter- from the Tsumeb mine, Namibia. Associatedminerals are quei- grown opaline silica. Assuming sufficientCu*2 for stoichiometry tite, alamosite, melanotekite, kegelite,larsenite, schaurteite,an- requiresCuO 46.7, C,O3 42.3, H,O 4.65, total 93.6 wt0/0.As- glesite, willemite, leadhillite, and mimetite. The grain size of suming that the shortfall from 1000/ois due to silica impurity, mathewrogersitedoes not exceed 0.3 mm in diameter. Idio- the derived empirical formula is CuCrOo 0.44HrO and the gen- morphic crystalsare flattened along {0001} and are six-sidedwith eral formula is CuCrOo'rHrO with 0 = n < | andZ: 1. Ex- possibly rhombohedral faces;the crystalsform subparallelinter- tensive studiesofthe analogousartifical compound indicate that t026 NEW MINERAL NAMES the water is zeolitic and not essentialto maintaining stnrctural with obradovicite. Known only from Chuquicamata,Chile, the integrity. mineral is named for Martin T. Obradovic from whosecollection The material is too fine grained for single-crystalstudy. Or- the type material came. Type material residesat the Colorado thorhombic unit-cell parameters,a : 5.35, b : 5.63, c : 2.56 Schoolof Mines Museum, the Smithsonian,and the Mining Mu- A, were calculated with reference to the artificial compound seum in Copiap6, Chile. K.W.B. CuCrOo0.lHrO (PDF 2l-297). The strongestlines of the X-ray powder pattern (25 given) are 3.88(l00xll0), 2.50(30X120), 2.33(18X01r), 2.3r(2s)(r01), 2.14(20X111), 1.e38(18X220), Orthoserpierite* r.787 (25)(r2r,300), and 1.753(30X2I 1). H. Sarp ( I 985) Orthoserpierite Ca(Cu,Zn).(SOo)'(OH)u'3H'O, a Moolooite occursas variable blue-greenmicroconcretions that new mineral from the Chessymine, France; a polymorph of have a dull to waxy luster. Individual crystallites are lathlike or serpi6rite.Schweiz. Mineral. Petrogr.Mitt., 65, 1-7 (in French). prismatic in shapeand are lessthan I pm in size. D".," : 3.43. The maximum refractive index, 1.95,is perpendicularto the axis Electron-microprobe analysis gave CuO 43.61, CaO 9.33, of elongation.The minimum refractive index, 1.57,is parallel to ZnO 7.29, SO321.20, H'O Oy diference) 18.57,which yields the axis of elongation.The mineral dissolvesin warm dilute HCI a formula (based on 17 oxygen atoms) of Ca,or(Curro- without effervescence. Zt o rr)"0,25,r,O,rHr. rr. Moolooite was found 12 km eastof the homesteadon Mooloo Single-crystaland powder X-ray diffraction studies show the : Downs pastoral station in the Precambrian Gascoyneprovince mineral to be orthorhombic, space grotp Pca2r, unit cell a : :20.39Q) of Western Australia, Australia, approximately I km north of 22.10(2),b 6.20(2),c A,Z:8.The strongestX-ray BunburyWell, at 25"01'30"S,I l6{6'30'8. The mineralwas dis- lines (48 given) are 10.21(100X002),5.10(90)(004), covered on an outcrop ofwhite glassyquartz intimately associ- 3.400(90x006,s12),3.184(50X513), 2.610(50)(r17,442,7 13), ated with sampleite,libethenite, and an unidentified mineral be- 2.5 5 8(50X2 1 7, 803,008), 2.5 | | (40)(52r,423,81 I ), 2.384(60)(424), lieved to be an oxalate. Other associatedminerals are chalcopyrite, and 2.r 11 (35X1 19,426,r0.03). digenite, and covellite; their oxidation has produced a variety of The mineral occurs as massesand fibrous crusts associated secondaryminerals including brochantite, antlerite, atacamite, with gypsum, devilline, and calcite on a brecciatedargillite. The gypsum,barite, andjarosite. Moolooite is believedto have formed sky-blue crystals have a witreousluster and a light green streak. by reaction betweensolutions derived from bird excretaand the Tabular crystals,flattened on 1001) are elongateparallel to the soluble secondarycopper minerals. A second occurrencers re- D axis and measureup to 0.2 mm. Splintery fracture. Soluble in : ported from the Sainte-Marie-aux-Mines silver mining district HCl. Mauve fluorescencein LW or Sw. D*"". 3.00 g/cm3, : : of VosgesMountains, France. D-'" : 3.07 g/cm3.Optically biaxial negative,a 1.586(D, A : : The name is for the locality. Type material is preserved at 1.645(2),t 1.650(2),2V^"," 32(2)',2V. t": 32'. Dispersion Perth. Western Australia. in the mineral collection of the Gov- distinct r > v. Weak pleochroism with X colorlessor very pale : : ernment Chemical Laboratories.A.C.R. green, Y and Z pale green. Orientation matrix X c, Y a, z: b. The name delineatesthe speciesas the orthorhombic poly- Obradovicite* morphic of serpierite.The holotype is preservedin the Mus6um d'Histoire Naturelle de Gen0ve.J.D.G. J.J. Finney, S.A. Williams, R.D. Hamilton (1986) Obradovicite, a new complexarsenate-molybdate from Chuquicamata,Chile. Mineral. Mag., 50, 283-284. Otjisumeite* Wet-chemicalanalysis gave NarO 0.56, KrO 2.48,CuO 5.85, P. Keller, H. Hess,P.J. Dunn (1981)Otjisumeit, PbGe4Oe,ein Fe,O,10.12, As.O,8.46, MoO,55.29, HrO 18.33,sum 101.09 neuesMineral aus Tsumeb. Namibia. Neues Jahrb. Mineral. wt0/0.The ideal formula is Ho(K,Na)CuFedAsOo)(MoO)5 l2H2O, Monatsh.,49-55 (in German). with K > Na. X-ray analysisreveals an orthorhombic cell, Pcnm, with a : Analysis of two homogeneouscrystals by electronmicroprobe 15.046,b: 14.848,c : 11.056A, Z : 4, D^,": 3.55(5), gave GeO, 64.7,PbO 35.5, sum 100.2wt0/0, aorresponding to D*b : 3.68. The strongestlines (28 given) are 8.906(100)- Pbfo'?rGejfrOo,or idealized PbGeoOr. (101), 10.565(80X110), 7.424(80)(020),2.e69(60X303,050), Single-crystalX-ray study with different methods shows the 5.733(50X2I 1), and 2.898(50X133). mineral to be triclinic, spacegxoup Pl or PT,with a: 6.945, Obradovicite occursas clustersofplaty, translucent,pea-green b : 6.958,c : 9.279Aanda : 102.94,8: 103.05,'y: 114.77", (RHS 149A)crystals (<0.1 mm) with a palerstreak (RHS 149C). Z: 2, D"^t": 5.77 g/cml. The strongestX-ray difraction lines No twinning was observed.The most prominent forms on crys- (18 listed) are 5.87(30X010,100,110),4.20(40X102,012,002), talsthat areelongatedslightlyalongcare { 100},{ I 10},and t0l 1}. 3.41(50X112,112,1 10), 2.95(100X102,212,t22.020,r2r), The facesof {100i are striatedalong c. Mohs' hardness: 2.5; 2.4 r (30)(r2i,2 17,222,2T2), 2.26(30)(t I 4, I 04,0I 4), 2.22(s0)- no cleavageobserved. The mineral is insoluble in cold 1:1 HNO, ( I 30,2 3 1,3 i 0,230), r.847(40)(322,1 r 5), and 1.7 82(g0)(1 32,- but dissolves readily when heated, readily soluble in cold 1:1 312J32,03r). HCl, rapidly turns dull brick orangein 40oloKOH, and is unaf- Otjisumeite could be a low-temperature modification of the fected by 200/oNH.OH. synthetic hexagonal phase PbGeoOn.The mineral forms pseu- Opticallybiaxial positive with 2V.: g1o,o : 1.790,P: 1.798, dohexagonal crystals, and the unit-cell parameters can be ex- : : 7 : 1.811(Na" line), a: Z, b : X, c : 1, obradoviciteshows pressedin pseudohexagonalsymmetry with a' 11.76, b' : : : strong dispersion and weak yellow pleochroism (Z > X : n. 11.79,c' : 9.279A, and a' 89.78,P' 89.73,| 59.65'. The mineral does not fluoresceunder short-wavelengthultravi- Otjisumeite occursin small replacementcavities in germanium olet light. ore from the Tsumeb mine, Namibia. The primary ore consists Obradovicite occurson brecciatedand leachedvein-quartz and of tennantite, germanite, and renierite. The secondaryminerals on crusts ofjarosite. Tiny wulfenite crystals are also associated in the cavitiesinclude chalcocite,calcite, quartz, siderite,gypsum, NEW MINERAL NAMES 1027 otjisumeite, and schaurteite.The otjisumeite crystalsare up to I Two further mineral phaseshave been found during the mi- mm in length and have a diameter of lessthan 0.1 mm; they are croprobe study, for which the author proposesthe names szlro- elongatedparallel to the c axis, and they have a columnar to kayil e, BirT eS.,and kil aibe I it e, 15 Bi,S, 5AgrS'PbS. No chemical fibrous habit; they usually form radiating aggregates.Weak {00 I } analysesor X-ray data are offered. The author also identified a cleavage. singlephase that is in fact wehrlite, BirTe2. The mineral is white or colorlessand often translucent, with Sztrokayiteis completely similar to the other Te sulfidesas far greasyluster. H about 3. Its optical propertiesare biaxial positive as cleavage,opacity, reflection, etc., are concerned.Kitaibelite with a : 1.920,P"^.: 1.922, : 1.943and 2V^, 2C.;a A possessesa reflectivity lower than that for bismuthinite and con- 1 ": c:3-5", no dispersion. tains gas bubbles and a few unidentified mineral inclusions. No The name is derived from the Herero indication of the locality. further data are presented. Type material is at the Institute of Mineralogy and Crystal Chem- Previous work on the wehrlite problem is discussed,as well as istry of Stuttgart (FRG) University and at the Smithsonian In- on the Te-Bi minerals in general.R.A.S. stitution in Washington. E.A.J.B.

Unidentifi ed Ptgroup minerals Spheniscidite* E. Hiinninen, R. Tiirnroos, S.I. Lahti (1986) Stillwaterite and M.J. Wilson, D.C. Bain (1986)Spheniscidite, a new phosphate associatedplatinum Eroup minerals from the Siikakimli lay- mineral from Elephant Island, British Antarctic Territory. ered mafic intrusion, northern Finland. Lithos, 19, 87-93. Mineral. Mag., 50, 291:293. The outer parts of a hollingworthite grain contain minute in- Analysis by X-ray fluorescencespectrometry and pyrolysis clusions of stillwaterite, probable guanglinite,and three uniden- methods yielded (after correction for SiO, and TiO, impurities) tified minerals. Microprobe (rox) analysesof two of these give Al,o3 9.33, Fe'O' (total Fe) 30.10,CaO 0.50, MgO 0.30, KrO possibleformulas of (Pt,Rh,Pd)(As,S),and (Pd,Rh,Pt).Pb(Bi,Te). 4.45,(NH4)'O 3.27,P2Os32.42,H'O (105.C) 5.84, H'O* (105- Analysis of the third and largestgrain, 3 x 8 pm, gave Pd 14.8, 1000'C) 13.79, sum 100.0 wt0/0.This correspondsto ([NHo)orr- Rh 12.8,Pt 2.0,Ir 1.8,Re 0.7, Fe I1.5,Cu 1.58,S 24.3,As 15.7, & o,Cao*Mgo or)",o.(FeljoAlo ro)r, 00PrO8 os(OH). HzO, or (NHn,- sum 99.4 wto/o,corresponding to (PdorrRh.5rPtoo4lroo4R€oor)r'', K)(Fo3*,AI),(PO4),(OH).2HrO.The mineral is soluble in acids Feo,rCu, o,S, , ,Aso ,u, approximately CuFe(Pd,Rh)(S,As)0.Some but insoluble in water. The pre curve shows two marked en- of the analytical As (as well as some of the Rh in the smaller dothermic peaksat I l0 and 195"C(loss of water crystallization), inclusions)may have beenderived from the hollingworthite host. and two exothermic reactionsat 538 and 572"C (decomposition Discussion. The authors note that the formula ratios for and recrystallization). CuFe(Pd,RhXS,As)oare similar to thoseof unnamedPt(Rh,Ir)CuSo X-ray data show the mineral to be monoclinic, P2r/n, with describedby Cabri et al. (1981,Bull. Min6ral., 104, 508-525). unitcell a:9.75(I), b:9.63(2), c:9.70(I) A, P: tOZIC(t)', If the Cabri et al. formula is written as (Pt,Rh,Ir)2CuSo,the equiv- Z : 888(2) A,, and Z : 4. The strongest lines (40 given) alent formula of the largestinclusion is (Fe,Pd,Rh)rorCu,o, are 6.79(1 00)( I 10), 5.99(90XI I I ), 3.053( 45)(?j I r,202,1 | 3), (S,As),nr. The small inclusion having the composition 7.6 2(40X 1 0 I ), 4.15 (3 5)(020,200,00 2), and 4.26(3 5)(0 2 r,2 I 0). (Pt,Rh,PdXAs,S).could be platarsite. J.L.J. The mineral occurs in an ornithogenic soil (associatedwith a penguin rookery) developed on till derived from chloritic phyl- lites on Elephant Island, British Antarctic Territory. The island Unnamed Sn mineral is at the easternend ofthe South ShetlandIslands about 800 km P.J. Dunn, W.L. Roberts (1986) Unnamed tin mineral from the southeastof Cape Horn. The mineral occurs in the soil profile Etta mine. Mineral. Record, 17, Nov-Dec. as fine-grained,brown aggregatesconcentrated mainly in the 75- 2000-p.mfraction from which it was separatedelectromagneti- Microprobe analysisofthe mineral gaveSnO, 58.2,Sbros I 1.2, cally. Optical properties could not be determined in detail be- CuO 10.1,FeO (total Fe as FeO) 9.0, SiO, 2.'1, CaO 0.4, AlrO3 causeofthe very fine grain size ofthe material. In thin section 0.3, H,O (by difference)9.1, sum 100.0 wt0/0,yielding an ideal the mineral is colorlesswith refractive indices ofclose to 1.7 and formula CuFeSn,(Sb,Si)O?(OH),. moderatebirefringence. It is brown in color, has an earthy luster, X-ray powder-diffraction pattem of the mineral resemblesthat and is very soft.D-" :2.71. of cassiterite,but all peaksare very weak and diffuse. The name is for Sphenisciformes,the order name for penguins. The mineral is pale greenwith a witreousluster and occurs in Type material is preserved at the Macaulay Institute for Soil fine veinlets of transparentmaterial (mushistonite?).R.A.S. Research,Craigiebuckler, Aberdeen, Scotland, and at the British Museum [Natural History), London. J.E.S. New Data

Sztrokayite, kitaibelite Cesstibtantite B. Nagy (1983) New mineral phasesin the composition of wehr- E.H. Nickel, B.W. Robinson (1985) Kimrobinsonite, a new tan- lite from Nagyborzsony,northern Hungary. F0ldtani Kozlony, talum mineral from WesternAustralia, and its associationwith Bull. GeoI. Soc., I 13, 247-259 (Hungarian with English trans- cesstibtanite.Can. Mineral., 23, 573-576. lation). Electron-microprobeanalysis gave NarO 2.2, CszO6.5, FeO Re-examination of previously studied material consideredto 0. l, Sbroj 17.0, TatOt 65.3,Nb,O' 5.1, HrO 1.9 (calculatedto be wehrlite, under the microprobe, revealed that material de- maintain electrical neutrality as OH), sum 98.1 wto/0. scribed over the years either as "wasserblei," "wehrlite," "pil- The material ofthis occurrencediffers from material described senite," etc. is indeed a complex mixture of BirSr, tetradymite, elsewherein that it is black and opaque,except in the very thin- hessite,joseite B, BirTeSr, and bismuthinite. nest particles. K.W.B. 1028 NEW MINERAL NAMES

Ganomalite The crystal chemistry of rhodizite was re-examinedusing data from high-resolution electron microscopy (nnerrr),magic-angle- P.J. Dunn, D.R. Peacor,J.W. Valley, C.A. Randall (1985)Ga- spinning nuclear magnetic resonance (vlsNrran), single-crystal nomalite from Franklin, New Jersey, and Jakobsberg,Swe- X-ray structurerefrnement, and a new chemicalanalysis. Material den: New chemical and crystallographicdata. Mineral. Mag., from Ambatofinandrahana, Ankarata Mountains, Madagascar 49,579-582. (20'33'S, 46'49' E), has the formula (I(oouCso ruRbo oNao or). r$lr' Electron-microprobe analysis of four ganomalite specimens Beo(B,,rrBeorrl-ioor)Orr,is cubic with a : 7.318(1)A and has from Franklin and sevenfrom Jakobsberggave, on average,SiO, spacegroup P43 m. Alenglhy discussionof the crystal-chemical 19.46,CaO 11.17,PbO 67.69,MnO 2.18,with tracesof MgO, aspectsof the rhodizite structure is presented.A.C.R. BaO, Cl, and AlOr, sum 100.5 wt0/0.With Mn present in a relatively constant 1 to 5 ratio with Ca, a new formula of PbrCarMnSirO' is indicated,.uv.rthZ: l. Rosasite Preliminary crystal-structuredata indicate that the Mn and Ca are ordered, as implied by the chemical analysis;ganomalite is A.C. Roberts,J.L. Jambor, J.D. Grice (1986) The X-ray crys- hexagonal,space group P3, with a : 9.82 and c : 10.I 3 A. D.P. tallography of rbsasite from Tsumeb, Namibia. Powder Dif- fraction,1,56-57. The unit cell of rosasite,(Cu,Zn)rCOr(OH)r, was determined Glaucocerinite and refinedto a : 12.873(3),b : 9.354(3),c : 3.156Q)A P : G. Raade, C.J. Elliott, V.K. Din (1985) New data on glaucocer- 110.36(3)";space group P2,/a. F.C.H. inite. Mineral. Mag., 49,583-590. Chemicalanalysis on the type specimensof glaucocerinitefrom Laurion, Greece,yields the formula [(Zn,Cu)rAl3(OH)r6][(SO4)r,5. Santafeite 9HrOl, basedon a pyroaurite-like structure. P.J. Dunn, D.R. Peacor(1986) Santafeite,a re-examination and The strongestlines in the X-ray powder pattern, indexed on a new empirical formula. Mineral. Mag., 50, 299-300. hexagonalpseudocell, are 10.9(100)(003),5.45(90X006), 3.63(80X009),2.62(60)(012), 2.46(60X0 I 5), 2.23I (50X0I 8), and Santafeite,originally describedby Sun and Weber (l 958) from 1.981A(50X0.l.l 1).Optical data are 2V = 60,,a : 1.540,B : the Grants uranium district, McKinley County, New Mexico, 1.554,7 : L562; D^..": 2.40 + 0.I g/cm3,D*rc : 2.33g/cm3. was re-examinedusing single-crystaland microprobe techniques. The authors alsopresent evidence that a so-called"woodward- The new idealized formula, consistent with equipoint rank re- ite" from Caernarvonshire,Wales, is a Cu analogueofglauco- quirementsfor space$ovp 8222, is (Mn'?*,Fe3*,Al,Mg)r- cerinite,and an 1I -A mineral occurringwith carrboyditein West- (Mna+,Mn'?*),(Ca,Sr,Na),,((VO"),(AsO")),u(OH),0.8H,O. A mi- ern Australia is the Ni analogue.D.P. croprobeanalysis yielded A1rO, 1.1, Fe.O3 1.1, MgO 0.9, CaO 5.2,SrO 8.5, Na,O 5.0,V,O5 36.5, As,O, 3.2,MnO, 16.5,MnO 13.3,HrO 8.8, sum 100.1wt0/0. In determiningthe formula, the Likasite HrO content and the Mn4+' Mnz+ ratio reported in the original description ofthis mineral were used.This analysiscorresponds H. Effenberger(1 986) Likasite, Cur(OH)r(NOr).2HrO: Revision to (Mn3lrFeSlrAlorrMgoro)"r,0(Mn€lrMn?.jr),roo (CarlSrrrr- of the chemical formula and redetermination of the crystal Nar or to the structure.Neues Jahrb. Mineral. Monatsh., 101-l 10. ru)",roo((VOo),orr(AsOo)one)r,rro(OH),,rr.8.40HrO simplified formula given above. The crystal structure of likasite was determined and refined to X-ray diffraction data confirmed the unit cell and spacegroup an R index of 10.80/ofor 1017 reflections.The chemical formula of santafeiteas originally reported, but also showedthat there is was revisedfrom Cu.(O$,(NO3),GO4) to Cu,(OH),(NOJ 2H,O. significant disorder in the crystal structure.A structural analysis F.C.H. is neededto clarify severaluncertainties regarding the structure and crystal chemistry of the mineral. J.E.S.

Motukoreaite

J. Rius, F. Plana (1986) Contribution to the superstructureres- Schneiderhiihnite olution of the double layer mineral motukoreaite. Neus Jahrb. F.C. Hawthorne (l Mineral. Monatsh.,263-27 2. 985) Schneiderhohnite,Fe'*Fe3*Asl*O,3, a denselypacked arsenite structure. Can. Mineral., 23, 67 5-679. The average structure of motukoreaite was determined and from the Tsumeb mine, Namibia, yielded the following results. refined to an R index of ll.4o/o for 336 observedreflections. The The mineral is triclinic, spacegroup P7,a : 8.924,b: 10.016, unit-celldimensions are a : b : 9.172,c: 33.5I A; spacegroup c : 9.103A, a: 59.91, : ll2.4l,7 : 81.69,Z: 590.843, R3m.F.C.H, P Z : 2. Structurerefinement to a final residualR of4.50/oon 3 I 84 unique observed (1 > 2.5oI) reflections. The determination of the structure leads to the new formula Fe'?+Fel+dsr+9,,instead Rhodizite of the previously reportedFe!+Aslof Or, (Am. Mineral., 59, I 139). A. Pring, V.K. Din, D.A. Jefferson,J.M. Thomas (1986) The A survey ofrecently refined arsenite minerals shows a constant crystalchemistry ofrhodizite: A re-examination.Mineral. Mag., geometryfor the arsenitegroup with (As4) : 1.776 A and (O- 50,163-172. As-O) : 97.2".E.A.J.B.