American Mineralogist, Volume 64, pages 464-467, 1979

NEW MINERAL NAMES*

MrcHe.nlFLErscuEn, GBoRce Y. CHeo ANDADoLF PABST

Bahianite* Omeiite

P. B. Moore, C. do Prado Barbosa and R. V. Gaines (1978) Ren Yingxin, Hu Qinde and Xu Jingao(1978) A preliminarystudy Bahianite, SbsAluOln(OH)2,a new species.Mineral. Mag.,42, on the new mineral of platinum group-omeiite, OsAs". Acta 179-182. Geol. Sinica, 52, 163-167 (in Chinese with English abstract).

Bahianite occurs as water-worn pebbles ('favas') with quartz, Microprobe analysesof six grainsgave Os 4'7'7,48.8,48.3' 5l'2' andalusite, kyanite, diaspore, eskolaite, cassiterite,elc, in the 50.7.46.5;Ru 4.6,4.4,4.2,3.5,3.1,4.2; Ir 0.6,0.6,l.l,0.6,0'5' 0.4; Paramirim region, south-central Bahia state, Brazil. The averageof As 44.4,44.5,45.0, 44.2, 44.5, 42.3; Fe0.2,0.2,0.2,0.2,0.2,0.3; Co four wet-chemical and microprobe analyses gave SbrOu 57.28, 0.1,0.2, 0.1, 0.1, 0.1, 0.1; Ni 0.3,0.3, 0.2, 0.2, 0.2, 0'4; sums97.9, Al,O" 35.37,Fe,O' 1.04, WOg 1.20,BeO 0.75, SiO, 1.03,HrO+ 99.0. 99.1, 100.0,99.3, 94.2 wt%o.The analysescorrespond to 2.77, sum 99.44Vo,leading to the formula for a series (Oso.uRuo,"Iro o1);= SbaAl5O14(OH)r-SbsAlu(Al,Be, Si)rO,u.Bahianite is monoclinic,a 192As, (Osor"Ruo 15116 61) 2= I 93As2 :9.406(6), b = ll.54l(8),c:4.410(3),{, P:99.94(3)",2:2, (Oso lalrqs2) g1As2 space group C2/m. Prominent powder diffraction lines are: ruRuo 2= 1 (Oso r2lroo1) y = 164 As, 4.7r 2(7 )200, 3.24 | (t0)20 t, 3.l 94(l 0)20l, 2.4s't(7 )240, 2.4 | | (7)04 t, ",Ruo 2.156(8)241,1.648(7)242, 1.635(1)242, 1.624(7)402. Color tan to (Oso,oRuo ,olro q, ) y = i 61As, (Osor.Ruo,uIro q1);=1 cream, crystals in vugs colorless,tan or pale violet. Specificgravity 92As2 ranges from 4.89 to 5.46 1526 for SbiAl,O'.(OH),1; hardness 9, or ideally OsAsr. cleavage { 100} perfect, luster adamantine, biaxial (-),2V large, a Precessionand Weissenbergphotographs show the mineral to be : = ^y : 1.81,B 1.87, 1.92,r ) u. The name is for the State of orthorhombic, Pnnm or Pnn2.The cell constantsa = 5.409,b = Bahia. 6.167,c: 3.021A compare closelywith thosefor syntheticOsAs, The crystal structure has been previously described; see P. B. (Heyging and Calvert, Can J Chem , 39,955-957, 196l); Z = 2, Moore and T. Araki: Bahianite,Al6Sb3+Orr(O,OH)2, a novel hex- D(calc)l1.20g/cml. The strongestX-ray lines(38 given, including agonal close-packed oxide structure; Neues Jahrb Mineral. Abh., 3 d-lines) are: 4.06(6Xll0), 2.67(8)(t20), 2.63(l0Xl0l)' 126, l13-125, 1976 (Mineral Abstr ,77-882). A.P. 2.04(6)(220),2.01(6x I 2 I ), 1.9I 5(I 0X I 30,2I I ), 1.209(6XI 50,4I I ). Crystals are prismatic tabular (20 x 7pm), elongated along b. There is one cleavageparallel to elongation. The mineral is brittle, Boyleite* dull steel gray with a metallic luster. It polishes well. Under re- Kurt Walenta (1978) Boyleite,a new sulfatemineral from Krop- flected light the mineral is white with a yellow tint in air, milky bach, southern Black Forest. Chem. Erde, 37,73-79 (in Ger- yellow in oil. lt is distinctly anisotropic and weakly bireflectant, man). yellow to grayish yellow. Reflectances(Ri and R,j) are: 39'08, 37.86 (480);40.43, 39.Is (s46);42.ts, 42.06(589); 46.35, 48'93vo Microchemical analysis by the Fresenius Laboratory gave SOe (656nm).The mineral is insolublein HCI and HNO' and dissolves 39.76, ZnO 29.25, MgO 2.82, CaO-lH"O (by difference) 28 177o. with difficulty in aqua regia. After deducting ll.6Vo gypsum, this corresponds to The mineral occurs with sudburyite, antimonian michenerite, (Zno r.Mgo lu)SO1 4HrO. Dissolved by water. Slowly dehydratesin hexatestibiopanickelite (Am Mineral., 6l, 182, 1976), sperrylite, a dry room to gunningite. and kotulskite in a pyrrhotite-pentlandite-violarite-gersdorffite- X-ray powder data are given (49 lines); strongest lines are ultramafic body in 6.8s(8X0ll),546(l0Xll0), 4.47(10x120,111),3.96(8X002), chalcopyrite deposit associatedwith an altered Sichuan (Szechuan), China. The name is for Omeishan, a well- 3.39(7)(040),2.95(76)(140). These are very nearly the same as those known mountain in the province. Type specimensare preservedin published for ZnSOn 4HrO [Pannetier et al., Bull Soc Chim the collections of the Museum of Geology, National Bureau of (1966),324-3261, which leads to a monoclinic cell for boyleite, Ceology (Peking?).G.Y.C. spacegroup P2,/n,a = 5.95,b: 13.60,c : 7.96A,A = 90.4",2 : 4, G(calc) : 2.41. Boyleite occurs as white earthy crusts formed by the decomposi- Sasaite tion of sphalerite. It is associatedwith gypsum. H near 2, fracture (1978) a new phosphate mineral from West uneven.Optically biaxial, negative,a: 1.522t0002,8 = (1.531), J. Martini Sasaite, 'y : 1.536+0.002,2V - 70". Driefontein Cave, Transvaal, South Africa. Mineral. Mag ,42, The name is for R. W. Boyle, geochemist,Geological Survey of 401-404. Canada.M.F. Sasaiteoccurs as white chalky nodules in the soil of a dolomitic cave, apparently derived from the action of bat guano on clay * Minerals marked with asteriskswere approved before publica- minerals. lt consists of an aggregation of rhombic plates l0-20 pm tion by the Commission on New Minerals and Mineral Names of in greatest dimension. Wet-chemical analysis gave: AlrOs 21.65, the International Mineralogical Commission. FezOs1.05, MnO 0.01, MgO 0.07, CaO 0.12, SrO 0'02' SOs2.77' 0003-004x /'t 9/ 0304-o+64s00.50 464 NEW MINERAL NAMES 465

PzOu24.16, H,O 49.50, F 0.03, insol. gg.44 = : 0.07, sum (lessO for F) 7.174, c 5.402A; D (calc) 6.15 E/ cms with Z : l. The name is percent, -leading to the simplified formula (Al,Fea+)ro in honor of Dr. Karel Tudek, Curator of Minerals at the National (PO.)''(OH)?SO..83HsO. A diffractometer pattern has been in- Museum in Prague, Czechoslovakia. A.p. dexed on the basis of an orthorhombic cell with a : 21.50, b : = 30.04, c 92.06A, Z : 10, G(catc) 1.747,(meas) 1.75. principal lines of the powder pattern are: I 1.52100, 7 .51 22,6.9923.6.30 21. Uranospathite and arsenuranospathite 2.901 = 42. Refractiveindices are a 1.465,p : 1.473, t : 1.47i. At K. Walenta (1978) Uranospathite and arsenuranospathite. Min- ambient temperature sasaiteloses water rapidly, about l2Eoof total eral Mag ,42, ll7-128. weight in ordinary atmosphere,22Va in a silica-geldesiccator. After two weeks it hydrates entirely again in a water-saturated atmo_ Reinvestigation of uranospathite from the type locality, Re- sphere.The name is derived from South Africa SpeleologicalAsso- druth, Cornwall (Hallimond, Mineral. Mag., 17,221-236, 1915) ciation, the members of which explored West Driefontein Cave for shows that it is an aluminum uranyl phosphate belonging to the the first time and discovered the mineral. A.p. torbernite series but more highly hydrated than other members thereof. The composition (HAl)",(UOr)r(PO1)r.20HrO was de- rived by indirect methods and from Tlapallite* a microprobe analysisshowing 2.6VoAl2Os in partly dehydrated material. S. A. Williams and Marjorie Duggan (197g) Tlapallite, a new Arsenian uranospathite occurs at Menzenschwand in the south- mineral from Moctezuma, Sonora, Mexico. Mineral. Mag.,42, ern Black Forest. Arsenuranospathite proper is a new mineral I 83- I 86. found at Menzenschwand and also at Wittichen in the central Black Forest. It is the aluminum uranyl arsenatecorresponding in Tlapallite was first recognized as a new mineral in 1972 at the formula to uranospathite. It is found in white to pale yellow Bambollita (La Oriental) mine near Moctezuma, where rt occurs as lathlike or wedge-shapedcrystals of orthorhombic habit with per- thin paint-like films on rock fractures in and adjacent to thin veins fect {001} cleavageand good {100} and cleavages. cutting intensely sericitized rhyolites. Recently it has also been {010} Though both mineralsare biaxial negative,and this is presum- found in old specimensfrom Tombstone, Arizona. Data for type ably the reason for referenceto and cleavages,they (Mexican) material: color viridian green RHS-l2gA with p;le {100} {010} are = assigned to a tetragonal space group, P4r/n. For uranospathite: streak, H 3, D(calc) 5.05 g/cms; monoclinic, class unknown, a = 7.02,c: 30.02A,Z = 2;D (calc;: = indexing of powder pattern based on Ito method gave = 2.49g/cms:a 1.492(2), a cell a = = = P | .5ll(2), 7 : 1.521(2),2V(-) : 76o;for arsenuranospathite: 11.97,b 9.11,c 15.664,8 : 90"36,.Strongest powder diffrac- a =7.16, c = 30.37A,Z : 2,D(calc) : = tion lines: I 1.972(10)100; 2.985(10)3 2.54E/cms;B 1.533, 13,223; 3.540(6) = 7 1.542(3),2V(-) : 52'. Both minerals convert readily to a 302,221,31l ; s.946(s)01 2; 2.887(5)l 3T,l 3l,n3,124. Simitar data lower hydrate, that in the case of partly dehydrated uranospathite is identical with sabugalite.Cell dimensions for the lower hydrate formed from arsenuranospathite, with lOHrO per formula unit as here stated, area = 7.15, c: 20.52A,Z : 2,D (calc) : 3.20 g/ :1.564 cm3;a colorless,P : 1.594,7 = 1.596 yellowish,2V ca. 28". The designations arsenuranospathite I, II, and III are pro- posed for the 20, 16, and lOH,O hydrates, the l6HrO hydrate being known only as a synthetic product. A.P.

Tutekite* Whiteite* J. Justand C. E. Feather(1978) Tudekite, a newantimony ana_ Paul Brian Moore and Jun Ito (1978)I. Whiteite,a new species, logueof hauchecornite. Mineral.Mag., 42, 279,M2l_22. and a proposednomenclature for thejahnsite-whiteitecomplex series.II. New data on xanthoxenite.III. Salmonsitediscredited. Tudekite,Nirsbrss, was found asmicroscopic grains in a miner_ Mineral. Mag., 42, 309-323. alizedArchean chlorite schist at Kanowna,Western Australia. and in gold-bearing conglomeratesfrom at leasttwo localitiesof the Whiteiteoccurs with otherphosphates along joints and fractures WitwatersrandSystem, SouthAfrica. At Kanownatueekite occurs in quartz and albite on numerousspecimens from Ilha de Ta- as rims and irregulargrains partly replacingmillerite and is associ_ quaral, Minas Gerais,Brazil, in crystalsup to 2cm. Ratherpure atedwith pyrite, chalcopyrite,gersdorffi te, pentlandite, magnetite, materialalso occurs in a sideriticiron-formation in theFish River- and supergenepolydymite. In the Witwatersrandthe mineralwas Blow River areaof NE Yukon Territory.Analysis of the yukon foundin concentrates asrare free grains or intergrownwith gold or whiteiteyielded Na,O 0.17, CaO 5.98, MgO 12.55,MnO 0.45,FeO with gersdormte. The mineralis opaque,pale yellow, with metallic 9.57,AlrOs 11.54,FerOr 0.25,P2O6 37.68, HrO- 10.35,HrO+ luster.Under the microscopein reflectedlight it is palebrownish- ll.2l, sum 99.75percent, leading to the formulaCa(Fe,Mn)r+ MgrAl.(OH),(HrO)E(PO.){.Analyses are also reportedfor Ca- poor and for Mn-rich typesof whiteite.Whiteite crystallizesin the spaceEroup Pzr/a; celldimensions for that from MinasGerais areta:14.90(4),b = 6.98(2),c: 10.13(2)4',p: t13"0't(10),,2: 2; G : 2.58;strongest lines in the powderdiffraction pattern are: 9.270(I 00)00 I ; 4.822(65)tI I ; 4.6s7(6s)@2; 2.94t(70)403; 2.78 | powderpattern of tudekite from Witwatersrand,indexed by anal_ (80)022.The crystals are tan colored; refractiveindices are: ogy with hauchecornite,gave the tetragonal : = : cell dimensionsa a 1.580(3),8 1.58s(3),7 = 1.s90(3);2v(+) = 40-s0., X ll b, 00n3404X / 79 /0304-0465$00. 50 466 NEW MINERAL NAMES

I/ ll a. Propertiesof Ca-poorwhiteite differ but slightly.The name Discussion is for Mr. John S. White, Jr. of the SmithsonianInstitution. The strongest X-ray lines given in the English abstract Whiteite is the Al8+-analogueof jahnsite, and the following L r l(r0), 5.58(8),4.621(6), 4. l l9(6),3.743(8), 3.3 l3(8), 2.96(7), nomenclatureis proposedon the basisof siteoccupancies in the lr 2.179(5),2.063(5)lare not consistentwith thosegiven in Table2 of structure:X M (l)M (2),M(3),(OH whiteiteif Al"+> ),(H,Oh(PO.L, the text.The calculateddensity (2.87) and the numberof Al (0.39) Fe3+in M(3) andjahnsite if Fe8+) Al8+ in M(3). Established in the givenempirical formula are in error, and shouldbe2.775 approachesto end-membercompositions include: whiteite- and 0.36 respectively.The analysismay be recalculated,on the (CaFe'+Mg) (type),whiteite--(Mn'z+ Fe'z+ Mg), jahnsite-(CaMn'z+ basis of 49 cationic charges, to (Feoo.Alo stCao to)(UOr). r. Mg) (type),jahnsite--(CaMn'z+Fe'z+) (Fletcher, N. H.), and possi- (PO.)r.s(SOl)r.(OH)'rs.23.65H2O.The densitycalculated from bly jahnsite{Mn2*Mn2+Mn2+)(Pala). A.P. this formula,2.88g/cmx, is more in line with the observedvalues, Discussion 2.9-3.18/cms . The fact that thesum of P and S atomsapproaches 4 per formula suggestsan unusualsubstitutional relationship be- The indicesof refraction(measured to *0.003 on zonedmate- tweenP and S. The balancingofcharges is probablyaccomplished rial) are thoseof a biaxial,negative mineral with large2V. M.F. by varying the amount of OH present.The generalizedformula may be written as (Fe,Al)(UO,).(PO.),-3(SOr)r-r(OH)'-o'24H,O. G.Y.C. Xiangiiangite

Hunan230 Institute and X-ray Laboratory,Wuhan Geologic Col- NEW DATA Iege(1978) Xiangjiangite-a newuranium mineral discovered in Xanthoxenite (in with English China.Scl Geol Sinica,No. 2, I 83-I 88 Chinese PaulBrian Mooreand Jun Ito (1978)l. whiteite,a newspecies and abstract). a proposednomenclature for thejahnsite-whiteite complex se- Chemicalanalysis, before and after deductionofinsolubles and ries.II. New data on xanthoxenite.III. Salmonsitediscredited. admixedquartz and pyrite, gave UO3 56.24,59.96; AbOs 0.90, M ineral. M ag., 42. 309-323. 0.96;Fe,O3 2.M,2.17; CaO 0.26,0.28; PzO" 8.15,8.69; SO3 5.65, The mineralnamed xanthoxenite by Laubmannand Steinmetz -; 6.02;H,O+ 9.86,10.51; H,O- 10.70,ll.4l; SiOdquartz)4.42, (2. Krisrallogr.,J5, 523-585,1920), authentic examples of which -; -; -; -; Fe(pyrite)0.15; S(pyrite)0.20, As,O,0.13, insol0.46, cannotbe located,is probablystewartite (in part) on the basisof sums 99.16, 100.00 wt7o. The analysis correspondsto morphological,optical, physical,and parageneticevidence. It is (Fe" (Cao eAL.sXUOr)r(PO1),,.(SO.)r ..(OH)0.r0. 22.79HrO 'o proposedthat thexanthoxenite of Frondel(Am. Mineral.,34,692- (Fe,AlXUOz)r(POr),(SOr),(OH). omitted, GYC) or simply 705, 1949)from the PalermoNo. I mine, North Groton, New 22HrO.Semi-quantitative spectrographic and microprobe analyses Hampshire,be adopted as the specific term andthat hismaterial be presence : |,D (calc): 2.87, confirmedthe of U, P, Fe,and Al. Z definedas the neotype,having the probablecomposition Ca.Fe!+ : (meas) 2.9-3.19/cm?. (oH),(H,O)s(PO.)1.A.P. The powderdiffraction pattern is indexableon a tetragonalcell with a = 7.17,c : 22.22A.The hkj electrondiffraction photo- graphshows the absenceof a four-foldaxis, and thetrue symmetry DISCREDITED MINERALS is thereforemonoclinic, or more likely orthorhombic.The strong- Dehrniteand lewistonite: Carbonate-fluorapatite* est X-ray lines (29 given) are: ll.ll(10X002), 5.58(5X004), 4.62r(6)(12),3.74(8)(l l4), 3.2e4(8X106),2.938(7)(213), PeteJ. Dunn ( 1978)Dehrnite and lewistonite:discredited. Mineral- 2.175(5X313),2.074(5)(226). Material dehydrated at l00oCgives a Mag.,42,282-284. pattern 4.45(10), significantlydifferent with strongestlines 2.86(8), X-ray and microprobe examinationof type dehrnite from 2.18(7),2.08(8), t.77t(7), 1.68s(6), 1.53e(6), 1.250(6). Dehrn,Cermany, and of dehrnitefrom Fairfield,Utah, showsthis yellow yellow The mineral occursas to bright earthy micro- mineralto be a carbonate-fluorapatite.Similar examination of the pale yellow silky. crystallineaggregates. The streakis and luster apatite mineral labelledenglishite-analyzed (from the Harvard col- The mineraldissolves readily in dilute HCI and HzSOr.It is not lection,but presumablyinterchanged with Fairfield"lewistonite") : fluorescentin short-waveUV radiation.H l-2. Under electron and of seventopotype "lewistonites" indicates that they, too, are six-sidedplates with microscopemost crystals appear as stretched carbonate-apatite. approximately90o and l35o interfacialangles; some appearas The sodium and potassiumcontent originally reported for plates.Optically the mineralis biaxial eight-sidedand rectangular dehrniteand lewistoniteis now attributedto contaminants.A.P. negative,a : 1.558,P:1.576,7 : 1.593.Pleochroism weak, extinctionparallel or symmetrical. The infraredspectrum is essentiallysimilar to that oftorbernite, Salmonsite: Hureaulite* jahnsite (Am. autunite, and furongite Mineral., 63, 425, 1978)but with Paul Brian Moore and Jun Ito (1978)I. Whiteite,a new species, additionalweak bands. The DTA curveshows endothermic breaks and a proposednomenclature for thejahnsite-whiteite complex at 95"(vs),174"(m), 217'(m), 330'(w), and 754"(w)and an exo- series.IL New data on xanthoxenite.III. Salmonsitediscredited. thermicbreak at 990'C(w).The TGA curveshows a major weight M ineral. Mag., 42, 309-323. lossbetween 95" and47'l"Cand a minor weightloss at near754"C. The mineraloccurs with sabugalite,variscite, pyrite, and quartz W. T. Schallerdescribed salmonsite as a new mineralfrom the in the oxidizedzone of a Permianuranium depositin Hunan, Stewartmine, Pala, San Diego County, California (J. Wash.Acad. China. The name is for the river Xiangiiangor Hsiang River. Sci.,2, 143-145,l9l2). His type materialcannot be located,but G.Y.C. salmonsitefrom the samelocality examined by D. J. Fisher(Am.

00034Mx / 79 / 0304-0466$00.50 NEW MINERAL NAMES 467

Mineral.,43, l8l-207,1958) matchesexactly the descriptiongiven jahnsite.The chemicalanalysis by Schalleris also nicely inter- by Schaller.X-ray powderdiffraction patterns of this materialcan preted in terms of 53.2Vomanganian jahnsite, 45.4Vohureaulite, be completelyinterpreted in termsof a mixtureof hureauliteand and l.4Voinsoluble. A.P.

cl Plinerals Soci Meeti llSAShort Courseon MarineMinerals

Thesixteenth meeting of the ClayMinerals Society and A Short Courseon l"larinel'linerals, sponsoredby the Min- the 28th AnnualMinerals Conference wi'll be held on August eralogical Societyof America,will be held at La Jolla, Cal- 26-29, 1979, at Macon,Georgia. Threedays of technica] 'ifornia, during November2-3, 1919. It precedes sessionsincluding a symposiumon kaolinite processingare the annual meetingsof the Geologica'lSociety of Americaand associated currently planned. A two-dayfield trip is plannedwith 'l979. societies in SanDiego during Novernber5-8, Lectures, visits to the kaolin minesand processingplants of middle demonstrations,and exhibits are plannedon the following Georgiaon Thursday,August 29, and the attapulgite -- marineminerals: phosphorite,barite, evaporites,silica Andersonvi'llearea on Friday, August30. Explanatoryti- polymorphs,zeolites, c1ays,placer deposits,iron oxides, tles of papersare due by l'lay1, 1979, and the deadline for 'l979. manganeseoxides, and ferromanganesedeposits. The purpose abstractsis JuneI, Submittitles to of the Short Courseis to provide an overviewof the minera- Dr. C. E. Weaver 1ogy, geochemistry,paragenesis, and economicpotential of TechnicalProgram Cha'i rman mineralson the seaflooror in the ocean. Schoolof GeophysicalScience GeorgiaInstitute of Technology FurtheLinfornation and registration forms maybe ob- Atlenf^ Aenrnia 30332 tained from: RogerG. Burns 54-816,Dept. of Earthand PlanetarySciences The 1980 Clay Mineral Conference will be held in llaco, MassachusettsInstitute of Technology Texas, on 0ctober 5-8. Dr. J. L. McAtee will be the General Cambridge,Massachusetts 02'l39 Chairman of the 1980 Conference.

0003-w4x / 79 / 0304-0467$00.50