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Home , Arfvedsonite, Bismoclite, Lorenzenite, Native aluminium, Nenadkevichite

American Mineralogist, Volume 78, pages1314-1319, 1993

NEW NAMES*

JonN L. Jlnrnon Department of Earth Sciences,University of Waterloo, Waterloo, Ontario N2L 3G1, Canada Dlvro A. VaNxo Department of Geology, Georgia State University, Atlanta, Georyia 30303, U.S.A.

Bearthite* Cancrisilite* C. Chopin, F. Brunet, W. Gebert, O. Medenbach,E. Till- A.P. Khomyakov, E.I. Semenov, E.A. Pobedimskaya, manns(1993) Bearthite, CarAl[POo]r(OH), a new min- T.N. Nadezhina, R.K. Rastsvetaeva(1991) Cancrisilite eral from high-pressureterranes of the western Alps. Nar[AlrSirOro]COr.3HrO:A new mineral of the can- Schweiz.Mineral. Petrogr. Mitt., 73, l-9. crinite group. Zapiski Vses. Mineral. Obshch., 120(6), 80-84 (in Russian). Electron microprobe analysesof the holotype sample from the Monte Rosa massif, Z,ermatt Valley, Switzer- The reportedchemical composition is NarO 21.30,KrO land, gave CaO 33.04, SrO 3.53, MgO 0.12, FeO 0.03, 0.10,CaO 0.68, MnO 0.1l, FerO.0.33,AlrO3 24.42,5iO, AlrO3 15.91,CerO, 0.04, LarO30.03, SiO, 0.30, PrO, 43.11,CO2 4.82, SO3 0.36, HrO 5.01,sum 100.24wto/o, 44.32, SO30.01, F 0.48, Cl 0.02, sum (lessO = F, Cl) correspondingto (Nau.rIQorCao ,rFeo ooMgo or)"r ro(Alo,*o- 97.62wto/o, corresponding to (Ca3,oSro ,r)r, nu(Al, ,r- Si, 2o)",2ooo2o ,o(COr), r0(SOo)0 0o'2.79HrO, ideally NarAlr- Mgoor)"r 00(P3 eTsio 03)>o ooFo ,u, closeto the ideal formula SirOr4CO3.3HrO.Dissolves readily with effervescenceat CarAl[POo]r(OH), with OH confirmed by structural re- room temperature in l0o/oHCl, HNO3, and HrSOo. Sin- finement. Other analysesindicate appreciableCa + Al + gle-crystalX-ray study showed the mineral to be hexag- REE + Mg substitution. Occurs as yellowish aggregates, onal, P6rmc, unit cell a : 12.575(3), c : up to millimeter size, of partly euhedral, flat prismatic 5.105(2) A. ttre powder pattern resemblesthat of can- crystals and as smaller anhedral grains corroded by laz- crinite, though the symmetry is higher (cancrinite has ulite in concordant segregationsin gneissand schist. space group P6r). The strongest lines (27 given) are Also presentas a rock-forming accessoryin pyrope-phen- 6.30(70,I l0), 4.6l(50, l0l), 3.65(90,300),3.22(100,2 I l), gite quartzite and in coesite-bearingmetapelite in the Dora and 2.722(50,400).Occurs as anhedrallilac-colored grains Maira massif, westernAlps, Italy. Yellowish color, white l-3 mm across,varying from water-clear to turbid, vit- ,possibly one poor prismatic ,uneven frac- reousluster, conchoidal , colorlessin thin section, ture, 11 : <5, solublein HCl, D"ur,: 3.25 g/cm3wfih Z white streak,brittle, H : 5, D-"u.: 2.40(2),D.",.: 2.39 : 2. Colorless and transparent in thin section, biaxial g/cm3 with Z : l. Optically uniaxial negative, <,r: : positive,a : 1.662(l),P : 1.671(l), t : 1.696(l), 2V^."" 1.509(2),e 1.490(2).Luminesces yellow in UV light, : 65.0(3)', Xllb, distinct r < v. Single-crystal similar to feldsparscontaining S'z-or SOI . The IR spec- X-ray structure study (R : 0.058) gave monoclinic sym- trum has minima at 425, 455, 493, 573, 620,686, 858, metry, spacegtoup P2,/m, a : 7.231(3),b : 5.734(2),c 980,1120, 1453,1560,1620, and 3580cm '. The min- :8.263(4) A, B : I12.57(8f. Strongestlines of the X-ray eral occurs in hyperalkalic of the Lovozero powder pattem (ll4-mm Gandolfi camera, CuKa ra- alkalic massif, which also contain potassium feldspar, diation, calculated intensities) are 4.58(22,011), ,, , and 27 other listed mi- 3.05(l 00,21t), 2.867(6 r,020), 2.75 4(27,103), 2.63 4- nor . The name refers to the anomalously high (2 l,l 20), 2.5 68(39,1| 2), and 2.4 44(l 9,2 | I ). Synthesized Si/Al ratio for a cancrinite-group mineral. Type material as flat prismatic crystalsup to 150 pm. is at the Fersman Mineralogical Museum, Moscow, and The new name is for P. Bearth (1902-1989)in recog- at the Vernadskii Geological Museum, Moscow. D.A.Y. nition of his pioneering petrographic work on the high- pressureterranes of the western Alps. Textural relation- ships suggestthat bearthite formed during the early high- Guarinoite*, theresemagnanite* pressurestages of Alpine metamorphism. Type material H. Sarp (1993) Guarinoite (Zn,Co,Ni)6(SOo)(OH,CI),.' is in the Mineralogisch-PetrographischesInstitut, Uni- 5HrO and theresemagnanite(Co,Zn,Ni)u(SOoXOH,CI),0. versity of Basel, Switzerland, and at the Mus6e de Mi- 8HrO, two new minerals from the Cap Garonne mine, n6ralogie, Ecole des Mines de Paris, and the Museum Var, France.Archives des Sciences,46(l),37-44 (in d'Histoire naturelle, Paris. J.L.J. French, English abs.). Guarinoite * Before publication, minerals marked with an asterisk were approved by the Commission on New Minerals and Mineral Electron microprobe and CHN analyses gave ZnO Names, International Mineralogical Association. 33.31,CoO 22.17,NiO 6.74,CUO 0.05, SO. 11.85,Cl 0003-004x/93/l l l 2- l 3l 4$02.00 13l4 JAMBOR AND VANKO: NEW MINERAL NAMES l3l5

0.77, H2O 24.4, O = Cl 0.17, sum 99.12 wt0/0,corre- Si5er)",2O2o(OH),.r3(CO3)o 36' 235H'O, ideallyNa'[Alu- spondingto (ZnrnnCo^uNio uu)r, ,, (SOo),08C10 16(OH)e 30. SLO,4(OH)r.2HrO.TheIR spectrumshows peaks at 1375 5.23H 20, ideally(Zn,Co,Ni)u (SO.XOH, Cl),0 . 5H, O. and 1460 cm-1 due to carbonate.The mineral dissolves Occurs as briglt to deep pink aggregatesor rounded ag- easily at room temperature in HCl, HNO3, and HrSOo, gegates to 0.3 mm of thin hexagonalcrystals up to 0.04 with slight effervescence.Single-crystal X-ray study gave : x 0.2 mm, tabular {00 I }. Transparent,vitreous to pearly trigonal symmetry, spacegroup P3, a: 12.740(3),c luster, light pink streak, irregular fracture, perfect {001} 5.182(2) A. Strongestlines (27 given) of the powder pat- cleavage,soft, nonfluorescent,soluble in HCl, D-*" : 2.80, tern are 6.43(25,110),4.70(60,101), 3.68(70,300), D."t : 2.77(l) E/cm'wfih Z: 3. Optically uniaxial neg- 3.26(100,2 | l), 2.75 6(50,400), and 2.433(30,40 l). Occurs ative, c.r: 1.584(2),e : 1.544(2),strongly pleochroic with in massive aggregates10-15 mm across;blue color, vit- O : pink, E : light pink. Single-crystalX-ray study in- reous luster, steplike fracture, H : 6, brittle, white streak, dicated hexagonalsymmetry, spacegroup P6r, P6r/m, or perfect {100} cleavage,D-"^ : 2.32(2),D" r": 2.26 gm/ Pq22, a: 8.344(4),c : 21.59(\ A. Strongestlines of cm3 with Z : l, nonfluorescent.Transparent and color- the powder pattern (l l4-mm Gandolfi, CuKa radiation) less in thin section, optically uniaxial positive, <.r: are 10.8(100,002),3.300(90,1 14), 2.725(60,120,116), r.494(2),e : 1.501(2). 2.563(50,123), 2. 3 5 I (40,302,207), and I .5 7 5(30,4 I I ). The mineral occurs in veins 1-5 cm wide in ultra-al- The new name is for Andr6 Guarino, mineral collector. kalic pegmatitesof the Lovozero massif, , Type material is in the Mineralogy Department of the associated with natrolite, steenstrupine, vuonnemite, Natural History Museum, Geneva, Switzerland. epistolite, mountainite, ilmajokite, and nastrophite. As with the synthetic analogue, the mineral is thought to Theresemagnanite form from alkalic fluids that are impoverished in Ca and Electron microprobe and CHN analyses gave CoO CO,. The name is for the chemical composition. Type 32.95,ZnO 20.42,NiO 3.18,CuO 0.16, SO310.54, Cl material is at the Fersman Mineralogical Museum, Mos- 5.65, HrO 28.40,O = Cl 1.28,sum 100.02wt0/0, corre- cow, and the Vernadskii Museum, Moscow. D.A.V. spondingto (Cor.orZnr.nrNio.roCuoor)"58, (SOo),.00(OH)8 2e- Cl, r5. 8.3HrO, ideally (Co, Zn,Ni)u(SO"XOH,CD r0 . 8HrO. Occurs as pink to light pink, thin platy crystals, tabular Manaksite* {001}, making up radiating spherulesto 0.2 mm. Crystals G.N. Nechelyustov are transparent, pearly luster, light pink streak, perfect A.P. Khomyakov, T.A. Kurova, (1992) Manaksite NaKMnSioOr': A new mineral. Zapi- cleavage,irregular fracture, soft, nonfluorescent, {001} ski Vses.Mineral. Obshch.,l2l(l), ll2-ll4 (in Rus- : g/cm3with solublein HCl, D-*" 2.52(2),D.^b:2.48(l) sian). Z: 3. Optically uniaxial negative,co : 1.568(2),e : 1.542(2), strongly pleochroic with O : pink, E : light Analysis by electron microprobe (averageof three) gave pink to colorless. A Laue pattern indicated hexagonal NarO 8.9,KrO 10.8,SrO 0.2, CaO 0.2, MgO 0.3, MnO symmetry,a : 8.363(8),c:26.18(17) A asderived from l7.2,FeO 0.8, SiO, 62.0, sum 100.4wt0/0, corresponding a Gandolfi pattern (ll4 mm, CuKa radiation) with to (Na, ,,I(ornCa" o,)", o, Sro or(Mno roFeo o.)-.rrMg o3si3eeor', strongest lines of l3.l(100,002), 3.523(30,114), ideally NaKMnSioO,o. This representsthe Mn analogue 2.9 8 5 (3 0, I 08), 2.68| (40,122), and 2.527 (9 0,1 24). of fenaksite.Colorless to creamy or rosy, translucent and Theresemagnaniteis named for Th6rdse Magnan, for transparentin thin section, perfect {001} and {010} : her contributions to knowledge about the Cu-Pb Cap cleavages,steplike and hackly fracture, brittle, H 5, :2.73(2), Garrone mine, Var, France.Type material is in the Min- nonfluorescent,D*"^ D,"u: 2.71 g/cm3with Z eralogyDepartment of the Natural History Museum, Ge- : 2. The infrared spectrum has a wide absorption peak neva, Switzerland. Theresemagnaniteand guarinoite are from I142-982, with a maximum at 1060, and a series secondary alteration minerals associatedwith a qluarlz of narrow peaksat 795, 770,750 (weak),692 (strong), gangueand anglesite,antlerite, ktenasite, ,bro- 632 (weak), 605 (strong), 533 (moderate), 470, and 430 chantite, covellite, tennantite, and gersdorffite.J.L.J. (strong)cm'. Readily dissolvesincongruently in cold l0Vo HCl, and on heat treatment at 600 'C produces several phases,including serandite.X-ray study indicated triclin- ic symmetry,space group PI, a:6.993(5), b : 8.219(7), Hydroxycancrinite* c : 10.007(DA, o: l05.ll(7), P: 100.76(6),r : A.P. Khomyakov, T.N. Nadezhina, R.K. Rastsvetaeva, 114.79(6)'.Strongest lines (20 given) of the powder pat- E.A. Pobedimskaya (1992) Hydroxycancrinite tern are 6.89(70,0I 0), 3.45(100,022,020),3.26(90,0 13), Nar[AluSiuOro](O]Dr'2HrO:A new mineral. Zapiski 3.0 5(8 0,2 I 2,I 13), 2.8 8 0 (7 0,A23), 2.7 | 5(7 0, 113,1 22), and Vses.Mineral Obshch.,l2l(l),100-105 (in Russian). 2.463(70,031).Optically biaxial negative, a : 1.540(2), The reportedchemical composition is NarO 23.43,K2O P : 1.551(2),t : 1.557(2),2V: 73",with cleardisper- 0.45,CaO 0.92, MgO 0.1l, MnO 0.03,Fe,Or 0.l8, AlrO3 sion r > v. 31.15,SiO, 36.32,CO, 1.59,HrO 5.41,sum 99.59wto/o, The mineral forms disseminatedirregular grains from correspondingto (Na, o.I(o,oCao ,uMgo o.Feo or)rr rr(Al. or- I to 3 mm acrossand in aggregatesup to 5 mm, inter- l3l6 JAMBOR AND VANKO: NEW MINERAL NAMES

stitial to rock-forming minerals in alkalic pegmatites of group. Zapiski Vses. Mineral. Obshch., l2l(l), 105- the Lovozero massif, Kola Peninsula.Associated miner- I 12 (in Russian). als include potassium feldspar, nepheline, sodalite, can- The two new minerals belong to the lomonosovite group crisilite, arfvedsonite, aegirine, analcime, , ussin- and occur in alkalic pegmatites of the Lovozero alkalic gite, makatite, villiaumite, and 16 accessoryminerals. The massif, Kola Peninsula, associatedwith potassium feld- new name is for the chemical composition. Type material spar, nepheline, sodalite, arfvedsonite, aegirine, cancris- is at the Fersman Mineralogical Museum, Moscow. ilite, analcime, albite, ussingite,makatite, villiaumite, lo- D.A.V. monosovite, vuonnemite, sobolevite, kazakovite, , lintisite, lamprophyllite, zirsinalite, eudi- alyte, parakeldyshite, terskite, belovite, , ser- Namansilite* andite, and loparite. The minerals are barely distinguish- properties. V.V. Kalinin, I.M. Marsii, Yu.P. Dikov, N.V. Troneva, able by optical and macroscopic Both new N.V. Trubkin (1992) Namansilite NaMn3+Si,Ou:A new mineralsform flakeson {001}, l-2 mm thick and 3 mm silicate.Zapiski Vses.Mineral. Obshch.,l2l(l),89-94 across,grown epitaxially on lomonosovite and sobolov- (in Russian). eite. The flakes are brittle, H : S,light brown, nonflu- orescent, translucent, and transparent in thin section. Analysis by electron microprobe (average of five) gave Luster is vitreous and resinous on fractures, pearly to SiO2 52.64, AlrO3 0.20, TirO, 0.19, FerO, 1.65, [sic] mirrorlike or metallic on cleavages.Steplike fracture, per- MnrO, 32.36,MgO 0.32, CaO 0.07, NarO 13.81,KrO fect {001} and less perfect {110} and {100} cleavages. 0.05,SrO 0.42,BaO0.05, sum l0l.16 wt0/0,correspond- The minerals dissolve easily in HCl. Pleochroicfrom col- ing to [Na, o,(K,Sr,Ba)oo,]", or[MnfljrFefijrMgoor- orless(X) to yellowish (Y, }wirh X < Y < Z; dispersion (Ti,Al)o SirOu,ideally NaMn3+ SirOu. The indicated o,l' 01 strong, r < v. valenceof Mn was determined through X-ray photoelec- tric spectroscopy.Electron microdiffraction demonstrat- Quadruphite ed that the new mineral is isostructural with aegirine. Analysis by electron microprobe (averageof three) gave Refinement of the powder X-ray diffraction pattern gave NarO 28.1,SrO 0.4, BaO l.l, CaO 5.3,MgO l.l, MnO a : 9.513(4),,: 8.615(3),c : 5.356(7)A, : 105.12.; B 4.3,FeO 0.3, SiO, 16.5,ZrOr4.l,TiOz13.7, NbrO5 3.8, strongestlines (23 given) are 6.3 30(80, I I 0), 4.306(80,020), PrOs19.2, F 3.4,O = F 1.4,sum 99.9wt0/0, corresponding 2.927(90,22r, 2.886(80,310),2.584(90,002), and to Na,r r,(Ca,,rBao ,oSfo ou)r, ,o(Mgo ooMno rrFeo ou)"o ro- 2.501(90,13T).Occurs as equant to elongategrains (3:l (Ti, ,oMnouoZro orNbo or)"n ooSioP3 ,oO* ooF,u,, ideally aspectratio) and rarely as elongateprisms, measuringup Na,oCaMgTio[SirOr]r[PO4]oOoFr.X-ray study showed the to 0.6 mm. Dark red to orange-redcolor; luster vitreous, mineral to be triclinic, a: 5.415(2),b:7.081(3), c : to pearly on cleavagesurfaces; brittle, Hrco: 794-1023 20.34(r)A, o:86.85(4), P : 94.40(4),1: 89.94(3),Z kg/mm'z (Mohs 6-7); square indentation and iridescent : l. The strongestlines (14 given) are 2.880(100,007), colors and microcracks parallel and subparallelto perfect 2.702(80b,20 1,200), 2.636(70,t07), 2.050(50,207,222), {ll0} cleavagewith (ll0) A (ll0) = 37"'D-""": 3.60 and I .600(50,322,1.2.10). Optically biaxial negative,a : g/cm3;insoluble in HCl. Twinning is polysynthetic,rarely 1.630, : 1.678, : 1.697,2V : 62o,D.""" : 3.12,D""t" simple, parallel to 100}. Optically B t { biaxial negative,high :3.11 g/cm]. ,a : 1.746(4), P : 1.769, t : 1.837,2V : 15-20, positive elongation, inclined extinction, Y : b, c Polyphite n X:20; pleochroicwith Z: blood red, f : raspberry red, X: lemon yellow. Analysis by electron microprobe (averageof three) gave The mineral occurs in mono- or polymineralic veins Na,O 28.0,SrO 0.3, BaO 0.9, CaO 8.3 MgO 1.3,MnO up to 3 mm wide in braunite ores of the Irnimiisk de- 5.6,FeO 0.2,SiO, 13.2,ZrO, 1.6,TiO, 12.0,NbrO5 2.7, : posit, East Asia, associatedwith braunite, taikanite, an P2Os23.3,F 5.1,O F 2.1, sum 100.4wto/0, correspond- unnamed sodium barium manganesesilicate, pectolite, ing to (Na,urrMno o.)r,._rr(Car roBao ,,Sro or)"r.u(Mgo rn- and Mn-bearing , orthoclase, and phlogopite. Mno ruFeoor)",..o(Tir,Mno urZro roNbo.rr)r3 eiSioPs rrOoo rr- The name is for the chemical composition. Type material Fnrn, ideally (Na, rCarMgTio [Siroi], [POo]uOrFu.X-ray is at the Fersman Mineralogical Museum, Moscow. study showedthe mineral to be triclinic, a: 5.412(2),b D.A.V. : 7.079(3),c : 26.56(l) A, o : 95.21(4),0 : 93.51(2), "y : 90.10(3)o.Strongest lines (28 given) of the powder pattern are 2.937 (l 00,009), 2.702(9 0,20 l,l 25,200,1 23), Quadruphite*, polyphite* 2.659 (80,20 l, | 24,109), 2.048 (8 0b, 20 9,224,224), | .77 | - (50b,04T), 4). A.P. Khomyakov, G.N. Nechelyustov, E.A. Sokolova, and I .7 30(50,1.2. 12,0.2.1 Optically biaxial : 1.600,0: 1.658, 1.676,2V: 56, G.I. Dorokhova (l 992) Na, oCaM gT io- negative,a 7: Quadruphite : : [Siro,]r[PO4]oOoF,and polyphite Na,,CarMg(Ti,Mn).- D-*" 3.07,D*b: 3.00g/cm3 with Z l- [SirO?]r[PO4]uOrFu:New minerals of the lomonosovite The names are for the number of phosphategroups in JAMBOR AND VANKO: NEW MINERAL NAMES I3l7 the formula unit. Type material is at the Fersman Min- The mineral occursin a skarn xenolith in two-pyroxene eralogicalMuseum, Moscow. D.A.V. andesite at a quarry in Tadano, Koriyama City, Fuku- shima, Japan, and in skarn at the La Negra mine, Que- r6taro, Mexico. Electron microprobe analysis(not given) Sitinakite* and D-"." 3.01 g/cm3 led to the formula (Ca, (A1o ideally Yu.P. Men'shikov, E.V. Sokolova, Yu.K. Egorov-Tis- ,rMgo,r)ru o, ,uFeo46)ro ,rSi, 00O,, u"Cl, uo, menko, A.P. Khomyakov, L.I. Polezhaeva(1992) Si- CauAlrSirO,uClz,D"t": 3.056 g/cm3with Z: 4. Single- : tinakite NarKTioSi,O,3(OH).4HrO-A new mineral. crystal X-ray structure study (R 0.062) indicated cubic ZapiskiVses. Mineral. Obshch.,l2l(l), 94-99 (in Rus- symmetry, spacegroup 143d, a: 12.001(2)A. The pow- sian). der pattern is stated to be indistinguishable from that of grossular. Analysis by electronmicroprobe (averageof three, HrO Discussion.Use of the name prior to the appearanceof by TGA) gave NarO 10.79,KrO 4.93, CaO 0.05, SrO a full description is inappropriate. It is not statedwhether 0.96, BaO 0.58, CerO. 0.12, FerO. 0.16, NbrO, 5.05, the mineral name has been approved by the CNMMN. TarO,0.05, TiO, 46.68,ZrO, 0.08,SiO, 17.80,HrO I1.7, J.L.J. sum 98.95 wt0/0,corresponding to (Nar rrKo urSroouBao or- Caoo,)", or(Ti, ,rNbo rrFeo o,)"n orSi, e4Or3(OH. ,oOo ou)", oo. 3.98H,O, ideally NarKTioSirOr3(OH).4HrO. X-ray study (single crystal and powder diffraction) showed the min- Cu"Bi'Su,Cu-Pb-Fe sulfide eral to be tetragonal,space group P4r/mcm, a: 7.819(2), S.O. Akande, A. Miicke (1993) Coexisting sul- c : 12.099(4) A. Strongest lines (34 given) are phides and sulphosaltsin the Abakaliki Pb-Zn deposit, 7.84(100,100),6.02(100,002), 3.25(80,1 l3), 2.608- lower Benue Trough (Nigeria) and their genetic signif- (60,300),and 2.003(70,006).Crystals with anomalousbi- icance. Mineral. Petrology, 47, 183-192. group axial charactermay be indexed on the space Pcc2. Electronmicroprobe analysis gave Cu 38.42,Sb 0.11, Symmetry reduction may be related to high concantra- Bi 42.81, S 19.08 wto/0,corresponding to Cuuor(Bi,o,- tions of Nb, or to filling of zeolite-like channelsby K and Sb00,)S6,oo.Light yellow in reflected light, reflectance presence HrO. IR spectroscopyrevealed the of both HrO identical to that of chalcocite, strongly anisotropic with and OH by absorptionlines at 1660, 3000, 3350, and polarization colors from bright yellow to cream. Size is 3354cm-t. DTA showedno endo-or exothermicevents. not stated,but photomicrographs suggestabout 45 x 50 X-ray studiesof heatedmaterial showedno changeat 400 rrm. Becauseof the distinct optical properties, it is thought "C, a changeto NarTirO,, between600 and 1000'C, and that the mineral might be a dimorph of wittichenite. Oc- a changeto at I100'C. Occurs as equant and short curs as intergrowths with bornite, enargite, tennantite, prismatic x x patch- crystals, I I 2 mm, and in 3-4 mm and chalcopyrite. Also presentin the same assemblageis pale es of intergrown crystals. Light brown with a rosy a secondunidentified mineral, possibly 20 x 50 pm, for tint, rarely colorless,vitreous luster, white streak, no flu- which electron microprobe analysis gave Cu 63.50, Fe orescence,Hn-so: 301-412 kglmm'z (average356), or H 2.34,Pb 12.29 (qualitative determination), S 20.87, sum : 4.5. Brittle, perfect cleavage,parting {100} on {001}, I 00 wt0/0,corresponding to Cu,r rrPbornFeo rrS, oo. J.L.J. steplikefracture. D-"." : 2.86(6),D.a": 2.87-2.89 gm/ cm3 with Z : 2. No dissolution observed in HrO, HCl, or HNO, at room temperature. Optically uniaxial posi- Pd-Bi chloride, Pd-Bi sulfide(?) tive, <,r: 1.780(3),e : 1.988(3);may show anomalous 2V: l0-ll'. Chusi Li, A.J. Naldrett (1993) Platinum-group minerals The mineral occurs in hydrothermal natrolite nodules from the Deep Copper Zone of the Strathconadeposit, in pegmatitesof the Khibinsky alkali massif, closely as- Sudbury,Ontario. Can. Mineral.,31,31-44. sociatedwith vinogradovite and related also to natrolite, Three electron microprobe analysesof each of three aegirine, magnesium , shscherbakovite,lo- grains (size not stated, but photomicrographs suggestup renzenite, lamprophyllite, pectolite, ankilite, djerfisher- to 30 x 35 pm) gavea rangeof Pd 27.59-35.05, Pt 0.84- ite, orthoclase, nepheline, villiaumite, mosandrite, and 1.97.Bi 44.21-58.02,Te n.d.-0.53, Pb 0.47-1.47,Cl . The name is for the chemical composi- 3.66-5.96, sum 88.46-92.64 wto/o,remainder O or OH. tion. Type material is at the Mining Museum, Saint Pe- Pinkish brown to pale brown pleochroism in reflected tersburg,and at the Kola ScienceCenter, Apatity. D.A.V. light. The phaseis associatedwith insizwaite, michener- ite, hessite,and . Three grains of a Cl-bearing Pd-Bi sulfide(?),up to 15 Wadalite x 50 pm, were observed in associationwith bismoclite T. Tsukimura, Y. Kanazawa,M. Aoki, M. Bunno (1993) in fractures in magnetite. Electron microprobe analysis Structure of wadalite CauAlrSirO,uClr. Acta Crystal- for one grain (three analysesreported) gave Pd 50.64, Pt logr., C49, 205-207. 0.40, Bi 21.42,Pb 0.72, Fe 1.28,Ni 0.51, Zn 0.52, S l3l8 JAMBOR AND VANKO: NEW MINERAL NAMES

ll.74,Cl 1.19,sum 88.42wto/o,plus O. In reflectedlight, their ready loss during or prior to microprobe analysis gray, isotropic. J.L.J. accountsfor the lower hydration relative to the structur- ally determined ideal formula containing 8HrO. Al- though uncommon, this phase has been identified in a BaSrO..HrO, BarSrO.F, BaSO., BarAlrSr(OH)8.8HrO slag from one site in Yorkshire, one in Derbyshire, and R.S.W. Braithwaite, A.R. Kampl R.G. Prirchard, R.P.H. one at Sorn, Scotland. Lamb (1993) The occurrenceof thiosulfates and other Specimenshave been depositedin the British Museum unstable sulfur speciesas natural weathering products (Natural History), London, and in the Natural History of old smeltingslags. Mineral. Petrology,47,255-261. Museum of Los AngelesCounty, Los Angeles,California. BaSrOr'HrO Discussion. Although there are numerous accepted mineral species that were formed in similar environ- Occurs as colorless,glassy linings ofcracks and as rect- ments, the current practice of the CNMMN is not to ap- angularcrystals showing {100}, {010}, and {001}. Elec- prove as new minerals those phasesthat originate from tron microprobeanalysis gave Ba 51.7,S 23.5 wto/o,very slags.The CNMMN practice also applies to phasesformed close to that of synthetic BaSrOr.HrO, which was used in mine fires and burning coal dumps. J.L.J. as a microprobe standard.The X-ray powder pattern and infrared spectrum also match those of the orthorhombic, synthetic phase. Identified in slags from three sites in Ba-dominant brewsterite Yorkshire and two in Derbyshire, IJ.K. Associatedwith R. Cabella, G. Lucchetti, A. Palenzona,S. G. the other three phasesabstracted here. Quartieri, Yezzalini (1993) First occurrence of a Ba-dominant BarSrOrF, brewsterite: Structural features.Eur. Jour. Mineral.. 5. 353-360. Typically forms colorless, transparent, near-rectangu- lar plates up to 2 mm across that are polysynthetically Electron microprobe analysis(not given) led to the for- twinned, triclinic crystalsclustered as cavity linings. Less mula (Ba, roMgoorNao orl(o oo Cao.orSro or)", oo (Si,, r rAlo rn- :9.82 common as white coatingswith a radiating texture. Elec- Feoor)",r.onOrr.nHrO,where n by X-ray structure : tron microprobe analysesgave Ba 65.9, S 13.5,Al 0.4, determination (R 0.05 l). Occurs as colorless to pale pink prismatic Sr 0.3 (variable) wto/o;BaSrOr.BaF, requires Ba 64.7, S crystals to 0.2 mm long and as radiating : l5.lol0. The infrared spectrum shows sharp absorption and parallel aggregates.Optically biaxial positive, a : : maxima at 1132,1019,687,554, and 527 cm-', which r.5|4(2),P r.5|6(2),7 | .528(2),2V^"".: 45(r),2V. t" : are characteristicofthiosulfate and also indicate the ab- 44'. Single-crystalX-ray study indicated monoclinic : : sence of hydroxide and other oxyanions. Single-crystal symmetry, space group P2r/m, a 6.790(l), b : : X-ray study showed triclinic symmetry, spacegroup PT, 17.581(4),c 7.735(t) A, B 94.50(3)..The mineral a : 22.63(2),b : 4.624(2),c : a.58I (4) A, o : 90.03(4), occurs in fractures in radiolaritic metacherts and in a B : 95.82(8),t : 89.97(5)'.Widespread in slagsfrom schistosemetapelite above radiolaritic strata at the Cer- two sites in Yorkshire and two in Derbyshire. chiara mine near Faggiona, I-a Spezi4 Eastern Liguria, Italy. J.LJ. BaSO, Occursas pale yellow to dirty greenishyellow, granular, New Data waxy-looking infillings of cavities to 2 mm across.Elec- tron microprobe analysesgave Ba 62.0, Sr 0.3, S ll.8 Native brass [sic] wto/o;(BaonnSroo,)SO, requires Ba 62.7, Sr 0.4, S M.P. Davydov (1993) Native metals and intermetallic 14.8o/o.The X-ray powder pattern and infrared spectrum compounds in metal-bearingsediments of the East Pa- match those of synthetic BaSOr.Relatively rare and iden- cific Rise. Transactions USSR Acad. Sci., Earth Sci. tified from only one site, in Yorkshire. Sect.,318(5), 17 4-179 [translatedfrom Doklady Akad. Nauk SSSR,318(5), 12ll-1215, l99ll. Ba,AlrSr(OH)E.8H,O The uppermost 0-2 cm of unconsolidated sediments Typically forms transparent,orange-yellow blades and on the flanks of the East Pacific Rise near l3oN, 215, pseudohexagonalplates to I mm. Some plates are thin, contain sheaflike intergrown scalesof native , micaceous,and up to severalmillimeters across.Electron plates ofnative nickel, layered fragments, scales,and fi- microprobeanalysis gave Ba 33.6,Sr 5.3, Ca 0.6, Al 9.0, bers of native , honeycomb-textured native S I 5.2 Wo/o;the formula @a".rSro.rCa",o)",ooS.. Ba(OH)r. copper,and platesofnative . The last contains round 2A(OH)3.5H,O requiresBa 33.6,Sr 5.4,Ca 0.6,Al 8.7, inclusions of native and native . Also S 15.50/0.Single-crystal X-ray structure study indicated presentare flakes and lumps of Zn with up to 13.35 wto/o monoclinic symmetry, spacegroup P2r/c, a: 8.786(8), Fe,Zn with up to 6.24 rvto/oAl, and thin, malleable, lath- b: 19.208(9),c: n.105(6)A, p:105.98". Threeof like flakes ofbrass with a brassyellow to gray color. Elec- the HrO moleculesare only loosely held in the structure; tron microprobe analysesof the brass (two and five par- JAMBOR AND VANKO: NEW MINERAL NAMES l3 l9 ticles,respectively) gave Cu 60.50, 61.39,Zn 37.25, 37.90, Huanghoite-(Ce) -, -, pow- Al 0.56, Si 0.03, sum 98.34,99.29wt0/0. X-ray Zhu-Ming Yang, F. Pertlik (1993) Huanghoite-(Ce), der data are given only for Al, Cu, Zn, and Fe. The origin BaCe(COr)rF, from Khibina, Kola Peninsula, Russia: of the metals is attributed to hydrothermal activity near Redetermination of the with a discus- active vents. sion on spacegroup symmetry. Neues Jahrb. Mineral. Discussion.See Am. Mineral., 77, p. 446, 1992, for Mon.,163-171. another reported occurrenceofnative brass.A phasewith a similar composition has also been reported in associa- Single-crystal X-ray structure determination of hu- tion with native , , iron, copper, and aluminium anghoite-(Ce)gave trigonal symmetry, a: 5.072(l), c : exhalative products of the Great Tolbachik fissure erup- 38.46(l) A, Z :6, and the new spacegroup R3z. The tion, KamchatkalTransactions USSR Acad. Sci., Earth resultsare in accord with data abstractedin Am. Mineral. Sci.Sect., 313(4),211-214, 19901.J.L.J. 78, I I 10 (1993)for the syntheticSm analogue.J.L.J.