American Mineralogist, Volume 62, pages 173-176, 1977

NEW MINERAL NAMES*

MrcHlrI- Fr-BlscHrnAND J. A. MeNnn'ntNo

and Institute Agrellite* Museum of Canada, Geological Survey of Canada, for the Mineralogy, Geochemistryand Crystal Chemistry of the J. GrrrrNs, M. G. BowN .qNoB. D. Srunlt.ltt (1976)Agrellite, a Rare Elements(Moscow). J. A. M. new rock-forming mineral in regionally metamorphosed agpaitic alkafic rocks Can. Mineral. 14, 120-126. Fedorovskite+ The mineral occurs as lensesand pods in mafic gneissescom- posed of albite, microcline, alkalic amphibole, aegirine-augite, S. V. MeltNro, D P SsrsurlN and K V. YunrtN'l (1976) eudialyte,and nepheline.Other mineralspresent are: hiortdahlite, Fedorovskite,a new boron mineral,and the isomorphousseries other members of the wcalcite, fluorite, clinohumite, norbergite, zircon, Zap. Vses Mineral- O'uo 105,71-85 (in Russian)' biotite, phlogopite, galena, and a new unnamed mineral, CaZr- SirO, [seeabstract in Am. Mineral 61, 178-179(1976)]. The local- ity is on the Kipawa River, Villedieu Township, T6miscamingue County, Quebei, Canada, at about Lat.46" 4'7' 49" N, and Long 78" 29'3l" W (Note by J.A.M.: The Lat. and Long. figuresare interchangedin the paper,and the figurefor the latitudeshould be 46" not 45" ) Agrellite occurs as crystals up to 100 mm in length. They are HCI elongatedparallel to [001] and are flattened on either {010} or X-ray powder data are given for the first 3 samplesanalyzed For { I l0} The color is white to greyishor greenishwhite The lusteron sample(Mg*Mn.u), the strongestlines (41 given) are 3'92 cleavagesis pearly. Cleavagesparallel to {110) and {ll0} are ex- the third r0 20t.3.027 202,2.5sr0 042,2.286322,2.1t97 043, t 6931324' cellent;parallel to {010}it is poor Hardnessis 5}; sp gr (meas) is to a unit cell with a8'96 +o'O2 b 13'15 2 902 and(calc.) 2.887. Agrellite is biaxial negativewith a = 1.567' 1.6307244; corresponding - + 0.02, c 8.15 + 0.01A. All dimensionsof the unit cell decrease ft = 1.579,'y= 1.581,'y a = 0'Ol4,2V: 47o.Orientation is with decreasing Mn content. Orthorhombic, spacegtotp Pbam' defined by the following @and p anglesfor thesedirections: i (010) occurs with sakhaite' with frolovite and uralbor- 0o and 90o, / (1 l0) 66" and 90o, / (Il0) 106' and 90", X 274" and The mineral veinlets' and with datolite in gar- 88', y 184' and 84', and Z 23o and 6'. (The optic axial plane is ite. as monomineralic skarns Commonly fibrous Color brown' almostparallel to l0l0l.) net-vesuvianite-svabite The mineral is triclinic witha : 7.'7'13,b= 18942,c = 6.9844,a ^y : = 90.148',P : I 16.84", :94.145", V 914 5hs,laniceP, Z: 4 Data are alsogiven for a pseudomonoclinictrue celland subcell. Strongest lines in the x-ray powder diffraction pattern are: 3 44 S 200. 1 50.3 33 S 220, 3.l9 VS t 50,05 t, 3.l4 VS 220,060, 202,002, to bright yellow' and2.58A S BI , no. X colorless to pale yellow, Z yellow for Nikolai Mikhailovich Fedorov (1886-1956)' One electron microprobe and two wet-chemical analyses were The name is All-Union ResearchInstitute of Mineral performed. A "most probable" composition based on these analy- former director of the Type material is at the MineralogicalMuseum, Acad- ses is: SiO, 58 83, TiOr 0.0l, Alros 0.10, Fe,Os0.11, MnO 0.25' Resources. USSR, Moscow. M' F. CaO 25.70, SrO 0.16, BaO 0.06, MgO 0.02, ZrOz0.t8, (RE),O3 emy of Science, 3.84,Na,O 7.90,K,O 0 22,H,O+ 0 4,F 4.45,toral 102.23,lessO = F 1.87, total 100.36weight percent. The formula derived from Krutovite* thesedata is: (NanouKo or) (Ca7,oREo or) (M n,Fe,Sr,Ba,ME,Zt)o ,o L I (Si156rAlo os)Oa, ?o[Fe ?3(OH)o ?,] or, ideally: NaCarSio0'oF(Note by R A. VtNocnnpove, N. S' Ruolsnevsrrr, I. A. Buo'ro, J.A.M.: The theoretical analysisfor this composition is: NarO BocHEK. P Ka.sp,qn.tNu K Peoru (1976) Krutovite, a new 7.86,CaO 28.43,SiO, 6092,F 4 82, total 102.03,less O = F 2.03' cubic nickel diarsenide. Zap' Vses. Mineral' O'uo l95' 59-71 total 100.00weight percent). (in Russian) The mineral is named for Dr. Stuart O. Agrell, University of M icroprobe analyses(63 | ) were made of 2 samples,giving (range Cambridge. Type specimens are preserved at: University of To- and averagefor each sample):Ni 23'5-26.7,25.0:25.8-28'5'26"1; ronto, Royal Ontario Museum, SmithsonianInstitution, Univer- Co 0.12-0.43,0.221 0.18-0.43, 0.30; Fe 0.09-0.41,0.15; 0'12-0'50' sity of Cambridge, British Museum (Natural History), National 0.2f: Cu 060-1.13, 0.86; 0.77-0.97,0.85; As 72'0-74'4,73'4; 70.3-73.1,71.9;S 0.02-0.18,0.09; 0.06-0'34'0.15; ratio (As * Ni,-'As, (x : 0-0.1)' Etching * Minerals marked with an asterisk after the name were ap- S),/totalmetals 2.21, 2.02, formula spot with iridescent proved before publication by the Commission on New Minerals with HNOg (l:l) gave a dark brownish-gray and HgClz did not react' and Mineral Names of the International Mineralogical Associa- borders. KOH, HCl, FeCls, (samplel)' 5.786+ .0024 (sample tron, Cubic, P2'3, a 5J194t.002A t73 t74 NEW MINERAL NAMES

2) Thestrongest lines (22 given) for sample I are2.g976 2A0,2.593 Alan Kulan of Ross River, Yukon Territory, who supplied the l0 2r0, 2.3658 2r t , | .746 I 31r , | .5486 32r , 1.0246 t 40. material.J. A, M, Color grayish-white,somewhat paler than the associatednickel skutterudite,luster metallic. In polishedsection in reflectedlight, bright white with a rose tint comparedto nickelskutterudite. Tvalchrelidzeite* Reflectancesfor the 2 samplesare given at l8 wavelengths from V. S.Gnuzonv, N. M. McueolrsHvrLr,G.A. Trneruovt,Z.ye. 440to | 100nm; 460,65.4, 64.7 ; 540,64.7, 65.0; 580, 65.7, 65.8; 660, Tsenrsvnozr, N. M. CnenNrrsovA AND N. G. Suutxove 66.8,66.3; 780,66.8, 66.0 percent. H (av.) 63], 624kglsq mm (1975)Tvalchrelidzeite, Hg,,(Sb,As)"S,u, a new mineral from the (:5.5 Mohs). Gomi arsenic-antimony-mercury deposit, Caucasus. Doklady Krutovite occurs in ore from the Geshibervein, Jachymov, Akad. Nauk.S.S.SR,225, 9l l-913 (in Russian). Czechoslovakia,as grainsup to 0..1 mm., usuallyin closeinter- growthwith nickelskutterudite, also with tennantite.It hasalso Anafysis by N.G.S. gave Hg 64.6O,64.94; Sb 14.32,14.12; As been found in samplesof arsenidesfrom the Khomahs deoosit. 7.60,7 75: S 12.83,12.7[, sum 99.35,99.52percent, corresponding TuvaASSR to Hg,r(Sbn."As, ,6)S,. and Hgrr(SbnroAsr r.)S,n ur. Spectro- ", The nameis for GeorgiAlekseevich Krutov, professorof miner- graphic analysisshowed Ag, Pb, Cu 0.001-0.01percent. Insoluble alogy, Moscow GosudarstUniversity, for his studiesof Ni-Co in solutions of alkali sulfides. Etch tests with standard reagents deposits.Type materialis in the MineralogicalMuseum of the gave no positiveresults. Academyof Science,Moscow, the Mining Institute,Leningrad, X-ray powder data (57 lines), unfiltered Fe-radiation, are given, and theNational Museum, Prague. M. F. the strongestlines being 3.49 100 210, 3.29 1t 204,2.92 100 0t4, 2 98 100 310, 400,2.080 100 i22. These are indexed on a mono- cline cefl with d ll.5l + 0.O1,, 4.39 r 0.02, c 14.62* 0.06A, B 92.14.. The mineral occurs in granular aggregates,without Kulanite* well-formed crystals. Cleavage perfect in one direction, fracture uneven and J. A. MeNolnlNo ANDB. D. Srunrrlnr.r(1976) Kutanite, a new conchoidal. H 143-220, av. 172kg/sq nm : somewhat lessthan 3, bariumiron aluminumphosphate from the yukon Territorv. Mohs. Sp gr 7.38 f 0.005. Color lead-gray,streak nearly black Canada.Can. Mineral.14, lZ7-131. with a dark reddishtint. Luster adamantine.A poor conductor of electricity. Polisheswell The mineral occurs as blue to green plates and rosette-like In transmitted light, dark cherry-red, translucent. In reflected aggregatesin a sideriticiron-formation in the northeasternportion light bright, on R, white to grayish-whitewith a very weak lilac of the Yukon Territory(at approximately6g"34,N, 136.50,W), tint, on Rs a distinctly greenish tint Bireffectancedistinct, strong Canada.The plates are tabular parallel to {i0l}. Thehardness is4, dark-red internal reflections. Anisotropic, with color effects from streakis very palegreen, and thereare two fair to good cleavages dark olive to dark violet. parallelto {010}and {100}.The density(Berman balance) is 3.91 Reflectancesare given at 12 wave lengths (440-660 nm): g/cm3;the density calculated from the analysisand cellparameters is 3.92 g/cms. The mineral is transparentto translucent,has a 460 540 580 640 vitreousluster, and is non-fluorescent.Kulanite is biaxial(*), a = Rl 40.0 39.5 36.7 33.5 1.703,13 : I 705,1 = 1.723,2V (meas.): 32', 2V (calc.)= 38", R; 41.6 36.7 34.7 32.6 birefringence: 0.020.Dispersion is verystrong with r )) u. The The mineral occursin the Comi deposit,Georgian opticalorientation is: b = A, c A ? = -8o. An opticaxis is almost SSR,associated with cinnabar, metacinnabar, normalto {I0l}. The mineralis pleochroicwith a = brownish realgar,and dickite. p = The name is for A. A. Tvalchrelidze,founder of the Georgian green, green,and y = verypale brown; absorptiona = d )) mineralogical-petrographic 7. The unsymmetricaldispersion indicates that the mineralis tri- school. Type material is preserved in the Mineralogical clinic,although crystals are pseudomonoclinic. The unit celldata Museum, Academy of Sciences,USSR, Mos- cow. M. are:triclinic, space group Pi,a = 9.032,b= l2 l19,c : 4.936A,a F, - 90', P : 100"23',? - 90o,Z = 2, V = 53t.4 A', a;b;c : 07453:l:0.4073.The followingforms (in monoclinicnotation) Zairiter wereobserved: {001}, {100}, {t20}, {l t0},{0t ll, {031},{iol}, {30t}, {lll}, {l2l}, {l3l}, and {l6l}. The srrongesrlines in the x-ray L. VrN WeMsrre (1975,publ. 1976)Lazairite, un nouveaumin- powderdiffraction pattern are (for CuKa, Guiniercamera): 8.84 6 eral appartenant a la serie de la crandallite. Bul!.. Soc. fr. Min- t 00,3.108 r0 03t,22t, 3 0447 I Jr, 2.927E 2 t t, and2.659A 7 3t I, erot Cristallogr., 98, 351-353. 320 Analysis of purified material gave PrOu 21.93, SiO, 0.33, SOi Chemicalanalysis gave: NarO 0.02, MgO 3.08,CaO 0.77, MnO 0.29, TeO,0.220, FerO. 30.75,Al,Oi 5.35, Bi"O, 28.71,BaO 1.98, 6.32,FeO 10.50,BaO 23.66,Al2Ot 14 30, FerOs Z.l4,pr0i3] .2g, CaO 0.72, CuO 0.82, ZnO 0.05, H,O 9.05, sum 100.18percent. HrO 3.83,SiO, 0 l9 (quartzimpurity), total 98.09 weight percent. Also presentSrO 0.05-0.10percent. Some samples contained up to Thesedata give a chemicalformula: Ba, o(Fef.+r.MnozlrMgo.rCaoor) 1.5-2 percent CuO. The analysis corresponds to the formula: (Al, or, ideally,Ba(Fe,Mn,Mg,CaL (Al, ",Fe$1r)(PO.)ro,(OH),, Fe),(PO.),(OHl. (Bio osCaoorCuo o"Ho ,r) ".Bao SimultaneousTGA andDTA showeda simpleone-stage weight (Fer',A1o..")[(PO.), losscurve. An endothermicpeak is presentat 7lOoC. r,(SiQ.)o*(SOs)o orj(OH )6 Kulanite is the triclinic, ferrous iron-dominant analogueof bja- or ideally Bi(Fe,Al)r(pOa)r(OH)..It is a member of the crandallite rebyite. Type material (the manganoan, magnesian variety) is pre- group, the ferric iron analogue of waylandite. servedat the Royal Ontario Museum. The name is in honor of Mr. x-iay study shows it to be rhombohedral, space group R3m, c NEI'Y MINERAL NAMES t75

7.015+ .005,c 16.365+ 0.0154,Z :3,5p gr (calc)4.42, (meas) UnnamedKrZn(SOJz'2HzO given) 4 37 + 0.05(pycnometer). The strongest X-ray lines (13 are M. DrlrtNs (1975)Volcanic sublimates of Rugarama,Kivu re- 5.71095 t0r,3.50340 I10,2.945100 I t3, 021,2;12720 006. gion, Republicof Zdlre.Repub. Riuandaise' Bull' Seru Geol',no' Color greenish.H 4 5, opticallyuniaxial, negative' n s somewhat 8, l-ll (in French) variable,1.82 and 1.83,birefringence weak to moderate. given for 5 sublimates The mineraloccurs in small masses,associated with mica and Chemicalanalyses and X-ray data are cone of the volcano anotherbismuth phosphate, apparently new, in the zoneof weath- emittedin May, 1971,by the Rugarama pale greento blue reni- eringof quartzveins containing wolframite, at Eta-Etu, northern Nyamuragira.One of theseconsisted of 7.90'Pb 2 91'Na 3'66' Kivu, Republicof Zdfte. form crusts;analysis showed Cu 13.50,2n dataare considered to be Thename is for thecounty of origin.Type material is preserved K 7.10,S total I 8.70percent. The X-ray percent,K'Zn(SO.),'2H,O (ASTM at the Commissiondes CommunautesEuropeennes, Brussels. due to chalcanthite+ 50 percent,NazSO. * l0 percent' M.F. l7-482)* 25 percent,anglesite + 5 S and other sulfates* l0 percent.Strongest lines (the synthetic compoundand those measured on the mixture)are resp': 4'15 80' UNNAMED MINERALS 4.t6 4024.0455, 4.05 30; 3.6890, 3.69 100; 3.29 100, 3'3130:2'972 65, 3.0060. M. F. Kunr WeLENrn (1975)The secondaryminerals of the barite veins of the Clara Mine near Oberwolfach in the central Schwarzwald. metals Aufschluss,26, 36941 I (in German). Unnamedsulfides of Pt V. D Becrzov,L F. BonlsnNxoAND E. D. Usrov (1975)Sulfides theultrabasites of Unnamed coPPercarbonate andnatural solid solutions of platinoidsfrom the Gusevogormassif, Urals. Doiklady Akad- Nauk SSSR,225' The mineral occurs in blue-green aggregatesup to 0.2 mm on no.6. 1408-l4ll(in Russian). barite. Radiating fibrous. Optically uniaxial to slightly biaxial, crystalinclusions in negative,dispersion strong r ) u, a | 645,1 L75l (both + .002)' Two new sulfideswere found as minute isolatedfrom pyroxe- pleochroism X colorless, Z pale gteen to bluish-green. Dissolved polyxene(Pt containing6.9-8.2 percent Fe), gray' opticallyisotropic, some- by dilute HNO" with effervescence,gave microchemical tests for nitesof this massif.The first was with laurite.Probe analysis gave Ir Cu, some Mn and Zn, and a little sulfate.Perhaps monoclinic or timesoccurring in intergrowth percenl, correspondingto triclinic, extinction up to 30o. X-ray powder dala (24 lines) show 44.6, Rh 29.2, S 24.1, sum 97.9 strongestlines 13.47 10, 7.849,5.17 6,3.65 t diff.' 3.255,2'966' (Rh, ,.lro13)S, oo. The secondwas found as an oval deposit l5 microns in diameter' dark gray with a bluish tint, isotropic under crossedNicols. Probe copPerarsenate-sulfate Unnamed analysisgavelr 48.2,Rh 11.0,Cu 13.1,S 26.6,sum 98.9 percent; (lrorrCu6"nRho3r)Seoo.M. F' The mineral previously describedfrom Wittichen (Am Mineral' correspondingto 58, 561, 1973)has also beenfound at the Clara Mine. Pleochroism X colorless,Y and Z pale green to bluish-green,X perpendicular to NEW DATA plates. Fraipontite

Unnamed lead arsenate-sulfate ANrnr-M,qtHIeu FRANSoLETeNo Por BouncutcNoN (1975'publ' 1976)New data on the fraipontite of Moresnet, Belgium' Bnl/ Probable formula Pb,Fe(AsOo)(SO.XOH). Microchemical tests Soc.fr. M ineral. C ristallogt., 98, 235-244' showed arsenate,sulfate, Pb, Fe, lessCu, and very little Ca. The X- ray pattern (41 lines)has strongestlines 6.035''4.90 6,3.68 5' 3.27 A new chemical analysis by J. M. Speetjenson type material 10, 3.00 1O,2.789,2.315,2.126.\t resemblesthose of the arsenate gave SiO, 20.86,Al,Os 16.62,FezOo 0.52, ZnO 47.04' MgO 0'07' analogue of tsumebite, PbrCu(AsO.XSOTXOH), and of fornacite, CuO 0.50, CaO 0.35, H,O- 1.13, H,O* (loss on ignition at Pb,Cu(AsOn)(CrOo)(OH), hence the formula above is assumed. 1000") 13.13,sum 100.22percent, correspondingto(ZnzsAloeo) per- Probably monoclinic. (Si,,,Alo.,)O,(OH).. The TGA curve shows loss of weight 2 The mineral forms yellow to greenish crusts, some reniform, on cent, 25-200", 4.75 percent 200-470", 7 .40 pet cent 470- I 000'' The barite, with mimetite, beudantite, and stolzite. Birefringence dis- DTA curve shows a small endothermalbreak at 350o,a largeone tinct, ,ls between20 and 2.1, a I 2O4 1 > 2.O4. at 395-430",and an exothermicbreak at730-775'. Zincite appears at 600", willemite and gahnite at 1000o.Infrared data are given. shows the mineral to be monoclinic, a 5.3'12,b Unnamed copper tungstate (Cuprotungstite?) X-ray study 9.246,c 7.2'13A,B 103"33'.The strongestX-ray lines(20 given) are The mineral occurs as grass-green crusts on quartz crystals. 7.03r00 00t,3.5370002,2.65040 130,201 ,2.385 30 t31,202. associated with scheelite, wolframite, and bastnaesite' Electron Opticallybiaxial, negative,2V 15-20", ns P : "Y= l.624.The microprobe analysisshowed major Cu and W, also Fe and Si. mineral is the zinc analogue of berthierine in the kaoli- Under the microscope the mineral appeared as aggregatesofcrys- nite-serpentinegrouP. M. F. tals of steep rhombic form, max. length 30 microns. Elongation above 2 l, birefringence moderately high, negative, rrs somewhat Kegelite* not notably pleochroic. X-ray powder data (16 lines) showed (1976) Kegelite,a new lead strongestlines 4.74 5, 4.078 diff., 3 84 8 diff., 2.54 10,2365,2.24 O. MsosNsecH ,tNo K. Scsurrzrn Monatsh' I l0-l 14 5, 1.468 8, not agreeing well with published data for cuprotungs- silicate from Tsumeb. NeuesJahrb. Mineral. tire. M. F. (in German) 176 NETY MINERAL NAMES

A p:eliminary report was abstractedtn Am. Mineral. 61, DISCREDITED MINERAL 175(1976).New data: Microprobe analysis,using as standards PbO2,synthetic diopside, barite, chromite,and iynthetic ZnO. gaveSiO, 16.2,SO3 7.9, Al,O3. 5.4, pbo 65.7,ZnO 2.8,FeO 0.95, Isostannite: Kesterite CaO0,04, MnO 0.0t,sum 99.10 percent. S wasdistributed homo- geneously,and no inclusionssuch as anglesitewere present, so S.A. KlsslNlr.ro D. R. OweNs(1975). New data on stanniteand sulfate part is of the formula.Infrared spectra showed no bandsof relatedsulphide minerals. Csn. Mineral. 13, 309(abstr.). OH or HrO. FormulaPb," (Zn,Fe)rAl.Si1rS1O"{. X-ray powder data (26 lines) show strongestlines: 21.06 70, The authorshave studied stannite and kesteritespecimens from 7.036 100, 3.826 75, 3.736 60, 3.010 95, 2.594 75. 2.340 a numberof world-widelocalities. They conclude that rsostannrte 50. M. F. is identicalto kesterite.J. A. M.