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Home , Bazzite, Berryite, Bityite, Pseudomalachite, Simpsonite, Volborthite

American Mineralogist, Volume 76, pages 665-67 I, 1991

NEW NAMES*

JonN L. J.Lrvrnon CANMET. 555 Booth Street.Ottawa. Ontario KIA OGl. Canada J,c.cnx Puzrnwtcz Institute of Geological Sciences,University of Wroclaw, Cybulskiego30, 50-205 Wroclaw, Poland

Astrocyanite-(Ce)* Burpalite, ideally NarCaZrSirOrFr, a new member of family, is monoclinic, M. Deliens,P. Piret (1990)Astrocyanite-(Ce), CurREE,- the cuspidine-wdhleriteJivenite : : (UOTXCO3)5(OH)r.l.5HrO,a new mineral from Ka- spacegroup P2,/a, a: l0.t 173(8),b l0.aaa6(6),c : moto, Shaba,Zaire. Eur. J. Mineral., 2, 407-4ll (in 7.2555(3)A, B 90.039(7f. Strongesrlines of a 114.6- French, English abstract). mm Gandolfi X-ray pattern (FeKa radiation) are 3.306(m,I 30),3.035(m,i 3I ),2.962(vs,202),1.886(ms,520), Electron-microprobe and CHN analyses(H,O by dif- I .787 s2,432,432),1 .67 8 (m,2 4 3), and I .5 5 6 (ms, 3 60). The ference)gave CuO 15.55,UO3 28.16,CaO 0.61, Ce,O, structure, which was refined to R : 0.067, showed that I 1.83,NdrO. 9.74,I-a,2O3 3.38, PrrO, 2.48,SmrO, 2.00, burpalite-type and lAvenite-type structures are two dis- YrO3 0.15, CO22l .40,H2O 4.70, sum 100 wto/0,corre- tinct orderedmembers in a family of order-disorder struc- spondingto 2.02 CuO.0. 9 8 Pro [(Ca"or)(Ceo rrNdo rola",, *- tures. SmoouYuo o,)lrOr. l.02UO3' 5.02COr.2.7HrO, ideally Burpalite occurs in a fenitized sandstoneat the western Cu,REE,(UO,XCO3)5(OH)r.l. 5HrO. Occursas pale blue, contact of the Burpalinskii alkaline massive, 120 km bright blue, and blue-green delicate millimetric rosettes northeast of the northern extremity of Lake Baikal, North of tablets,platy {00 I }, translucentto opaquewith an earthy Transbaikal, USSR. The new name is for the locality. luster; also as isolated, vitreous, tabular blue crystals. Type material is in the Fersman Mineralogical Museum, {001}, H : 2-3, D-""" : 3.80,D",,. : 3.95g1cm3 Moscow, and in the Museo di Storia Naturale dell'Uni- with Z : 12, soluble with eflervescencein dilute HCl. versiti di Pisa, Pisa, Italy. Optically uniaxial negative,e : 1.638(2),co : 1.688(2),<.r "Orthorhombic lavenite", reported previously from the normal to {00 I }; strongly pleochroic from bright blue (<,r) same locality as burpalite, consists of a twinned mono- to pale blue, almost colorless.X-ray single-crystalstudy clinicphase with a : l1.l l, D: 10.05,c:7.23 4,, : indicated hexagonalsymmetry, spacegroup P6/mmm or P 108.99'.The phaseis probably a polytype ofburpalite. a correspondingsubgroup, a: 14.96(2),c : 26.86(QA; Baghdadite and burpalite are probably isostructural and the strongestlines of the powder pattern (l14.6-mm De- related by the coupled substitutions Na+ * F + Caz* I bye-Scherrer camera, Ka radiation) are or. l 3.3(40,002),6.73(100,004), 4.30(50,300), 4.1 6(60,205'), Discussion. A description of the physical and optical 3.72(90,220), 2.488(40,330), 2.154(40,600), and 2.07r(40,s20). properties of burpalite was given in the abstract for the then-unnamedmineral in Am. Mineral., 75, 436-437 The mineral was found as an oxidation product of ura- ( I 990). The improved X-ray powder data given above are ninite in the EastKamoto Cu-Co deposit,southern Shaba, from a crystal free of lAvenite-typ€domains. J.L.J. Zaire. Associated are uranophane, kamotoite- (Y), francoisite-(Nd), shabaite-(Nd),schuilingite, and ma- suyite. The new name alludes to the combined star-like Byelorussite-(Ce)* morphology and color (Greek for blue), as well as the E.P. Shpanov, G.N. Netschelyustov, S.V. Baturin, dominant REE. Type material is in the Institut royal des L.S. Solntseva(1989) Byelorussite-(CelNaMnBarTi,- Sciencesnaturalles de Belgique,Brussels, Belgium. J.L.J. Si8Or6(F,OH).HrO-A new mineral of the joaquinite group. Zapiski Vses. Mineralog. Obshch., I l8(5), 100- 107 (in Russian). Burpalite* Electron-microprobe analysis(average of 4) gaveNarO S. Merlino, N. Perchaiazzi, A.P. Khomyakhov, D.Y. 2.08,KrO 0.40,SrO 0.43, BaO 20.58,MnO 2.58,FeO Pushcharovskii,I.M. Kulikova, V.I. Kuzmin (1990) 0.82,MgO 0.l5,ZnO 1.58,CerO. l2.l3,Ia2O3 8.33, PrrO. Burpalite, a new mineral from Burpalinskii massf North 0.58,NdrO3 2.3, SmrO,0.1, GdrO3 0. 15, >REErO323.59, Transbajkal, USSR: Its and OD char- SiO,33.98, TiO, I1.35,F 0.98,O : Fr0.4l, sum98.1l, acter.Eur. J. Mineral..2.177-185. HrO (calc.) I .45, sum 99.56 wto/o,corresponding to (Ntu n,- IG,r)", or(Mno,rZnorrFeo,uMgoor)", oo(Ba, noSroou)", nu(Ce, or- * Before publication, minerals marked witih an asterisk were Lao 72Nd0 ,nPro orGdo o,SIno o,)", o3Ti, orSis ooOru[Fo,r- approved by the Commission on New Minerals and Mineral (OH)orrl' oo HrO. Spectral analysis revealed (wto/o)Nb Names, International Mineralogical Association. 0.06,Ta 0.03,Be 0.1,Pb 0.03,Cd 0.001,Sn 0.001,Ge 0003-004x/9I /0304466 5$02.00 665 666 JAMBOR AND PUZIEWICZ: NEW MINERAL NAMES

0.0006,Y 0.07,Yb 0.0009.The presenceof OH and H,O 18.05,17.00; 590 17.80,16.75; 610 17.60,16.65:' 630 was confirmed by infrared . 17.40,16.50; 650 17.30,16.45;670 r7.20, 16.30;690 Tabular and thin-tabular crystals of the mineral are up 17.00,16.15. For the largestgrain, H,o: 108 kglmm' to 25 x 20 x 4 mm and are fractured on margins. Cleav- (Mohs 3.2);D^.^": 3.65,D.",.: 3.67g,/cm3 with Z : l. agesare filled with or a fine mixture of brookite, In transmitted light, parallel extinction, negative elonga- bastniisite,and . Paleyellow to pale brown tion, optically uniaxial negative,e : 2.3(l), o: : 2.4(l). color, colorlessstreak, cleavages {001} perfect,{ 100} im- Strongestlines of the X-ray powder pattern, indexed with perfect, and {010} very imperfect. Vitreous luster, very a hexagonalcell of a : 8.970, c : 12.207 A, are: brittle, H : 5.5-6.0, D-"." : 3.92, Do,, : 4.09 g/cm3. 3.300(100,004),3.050(90,104), 2.510(50,105), 2.060 Opticallybiaxial positive, a : 1.743,g : 1.760(3),7: (50,312),and 1.655(50,008).Indexing is in harmony with 1.820(5)at 589nm, 2V:58-62. Optic axisplane (010), the spacegroups P6322, P6'm, and P6r. Synthesized,at negativeelongation, X : a, Y: b, Z: c. 400, 500, 600, 700, 800, and 900 "C (heatingtimes 3-28 absent to very weakly yellow with Z 2 f = X. No lu- days); highest temperatures give the coarsestgrains (to minescencein UV. The infrared spectrum has absorption 0.2 mm). Refractive indices decreasewith increasedtem- bandsat3510,3480, 1610, 1450, 1200, 1085, 1040, 1015, peratureofsynthesis, and the X-ray pattern changesslight- 985,920,900, 800, 795, 720, 690,655, 545, 495, 470, ly. The DTA curve showsendothermic peaks a|831,954, 445, and 410 cm-'. X-ray study showsthe mineral to be and 1106"C, and a majorweight lossat 1000'C. The orthorhombic, a : 10.57(6),b : 9.69(6),c : 22.38(10) infrared spectrum has absorption bands characteristicof A, spacegroup P2r2,2,. The strongestlines (62 given) of an oxide. the powder patternar e: 4.42(59B,022,1 | 4), 3.00(6 8, 3 I 3), The mineral occursin quartz veins associatedwith bis- 2.95(63,224,026), 2.9 t(52,t t7), 2.783(100,008,225), and muthinite, molybdenite, joseite, koechlinite, and cassit- 2.606(52,03s). erite in a molybdenite deposit at Chilu, Fujian Province, Byelorussite-(ce)occurs in a salband of a quartz vein China. in lower Proterozoic metasomatized granosyenitesbe- Discussion.The repository for type material is not giv- longing to the Zhitkovitschskij horst, Homel district, Bye- en. Calculated d values are in only moderate agreement lorussia SSR.The mineral is associatedwith quartz, mag- with the measuredvalues, suggestingthat the cell param- nesioriebeckite,aegerine, perthite, , leucophanite,and eters (and inappropriate space-grouppossibilities) need titanite. The name is for the locality. Type material is at revision. According to J.A. Mandarino, Chairman of the the Fersman Mineralogical Museum, Moscow. J.P. CNMMN-IMA, the new name that was approved was chilunite rather than chiluite. J.L.J.

Chiluite* Xiuzhen Yong, Deren Li, Guanxin Wang, Mengxiang Clinobehoite* Deng,Nansheng Chen, ShuzhenWang (1989)A study A.V. Voloshin, Ya.A. Pakhomovskii, D.L. Rogatschev, of chiluite-A new mineral found in Chilu, Fujian, Chi- T.N. Nadezhina, D.Yu. Pustscharovskii,A.Yu, Bahk- na. Acta MineralogicaSinica, 9(l), 9-14 (in Chinese, chisaraytsev(1989) Clinobehoite-A new naturalmod- English abstract). ification of Be(OH), from desilicatedpegmatites. Min- eral. Zhurnal, I l(5), 88-95 (in Russian). Twenty-four electron-microprobeanalyses gave an av- erageand (range)of Bi,O, 68.5 9 (7 1.90-63.7 l), TeO. I 5.8 3 Laser spectral analysis gave 55 + 5 wtoloBe, and cou- (18.65-12.07),MoO, 15.40(19.04-13.18), Sb,O3 0.17 lometric analysis gave 41.0 wto/oHrO, corresponding to (0.29-0.07),WO3 0.21 (0.33-0.01),sum 99.55[00.20] Be(OH)r. Solublein HCl. Cuneiform, platy crystalsof the wto/o;the presenceofO was confirmed, and CHN analyses mineral occur in radial aggregatesup to I mm in size. of the synthetic analoguegave O contents in the appro- Thin plates are transparent. Color white, luster vitreous priaterange. Ratios of Bi:Te:Mo:O approximate6:2:2:21, with pearly tint, H : 2-3,biItLe, cleavages{ 100} perfect, and the ideal formula is BiuTerMorOr,. Oxidation states {010}and {001}imperfect. D-.,": 1.93(3),D"^,": 1.92(2) are based on the O values obtained by difference from g/cm3.The DTA curve shows an endotherm at200-280 100 wto/0.The mineral occursas plumose replacementsin (maximum 240)"C, related to extensiverelease of water. joseite inclusions in bismuthinite; as veinlets and as ir- The IR spectrumexhibits absorptionsat 3545,3485,3405, regular to hexagonalisolated grains isolated in bismuthin- 3320,1235, 1175, I I 15,1005, 950, 820, 740,710, 685, ite; asa rim on koechlinite, the exterior having a hexagonal 635, 5 40,5 2 5, 500,46 5, and 440cm-', analogousto those outline. Color yellow, grain sizegenerally 10-20 pm (max- for synthetic aBe(OH),. Optically similar to behoite; bi- imum 42 pm). Gray in reflectedlight, weakly anisotropic, axialnegative, a : 1.539(l),0: 1.544(l),7: 1.548(l), no bireflectance,gray-brown internal reflection. Reflec- 2v^."": 80",2v.^k: 83".Strong , no pleoch- tance values are given in lO-nm steps;representative val- roism; I : b, X = c, Z A a - 9' (in obtuse angle B). uesfor R', and R'oare: 4 l0 20.75, 19.45 ; 430 20.45,19.25 ; Single-crystal X-ray study showed the mineral to be 45020.00, 18.80;470 19.50, 18.40;490 18.90, 18.00;510 monoclinic,a : I1.020(8),b : 4.745(6),c: 8.6a6Q)A, 18.60,17.75; 530 18.40,17.50; 550 18.25,17.25; 570 B : 98.94(8)o, P2,, Z : 12. X-ray crystal- JAMBOR AND PUZIEWICZ: NEW MINERALNAMES 667 structure refinement of the mineral is given. The strongest at 3460,3230, and 1616 cm ' suggestthat water in the lines of the X-ray pattern (60 given) are: 5.43(80,200), mineral is weakly bonded. The DTA curve shows broad 3.76(7 0,t I I ), 3.6I (90,300),3. I 6(70,30 t), 2.7| 4(100,400), endothermsat 85-160, 370-490,630 (melting),and 700 and 2.306(70,1l3). 'C. The TG curve shows a continuous weight loss, and The mineral occurs in hydrothermally altered zonesof DTG exhibitsmaxima at I l5 and 160'C (corresponding desilicatedpegmatites in the Murzinkha region (Ural Mts., lossesare 5.55 and 2.20 wto/o,respectively); the second USSR) and is associatedwith bavenite,bityite, phillipsite, loss is correlatedwith a seriesof weak, sharp endotherms analcime, and albite. The new name is for the monoclinic that correspond to oxidation of low-valence . symmetry and chemical composition analogousto that of Total weight loss 13.50 wto/0.Combined X-ray powder behoite. Type material is in the Fersman Mineralogical and SAD studies show the mineral to be monoclinic, a: Museum, Moscow. 11.84(l),b:3.6s00(4), c:2r.27(l) A, B: 100.0(l)", Discussion.Previously abstractedas an unnamed min- spacegroup C2/c or Cc. Strongest lines of the powder eral in Am. Mineral., 75. 1213. 1990.J.P. pattern (15 given) are: 10.51(100,002),3.484(60,110), 2.9| 5(30,400), 2.7 5 6(30,1 l5), and 2.606(40,3 | l). The mineral occursin the weatheredcrust ofvanadium- bearing black shalesin northwestern Karatau, southern Girvasite* , USSR. The name is for the locality. Type E.V. Sokolova,Yu.K. Egorov-Tismenko(1990) Crystal material is at the Fersman Mineralogical Museum, Mos- structureofgirvasite. Doklady Akad. Nauk SSSR,3 I I (6), cow. J.P. 1372-137 6 (in Russian). X-ray single-crystalstructural study (R : 0.049) of gir- vasite indicated the formula NaCarMg(OH)r(H,O)"[PO4], The mineral is monoclinic, spacegroup [POr(OH),(COr). Lithiowodginitex P2,/c, a: 6.522(3),b : 12.25(3),c : 21.56(\ A, B : 89.48(5)',D-""" : 2.46,D"t": 2.42 g/cm3with Z : 4. Occurs in dolomitic carbonatite at the Kola Peninsula, A.V. Voloshin, Ya.A. Pakhomovskii, A.Yu. Bakhchis- USSR. araitsev (1990) Lithiowodginite-A new mineral of the group granitic Discussion. As with tuliokite (which see),a complete wodginite from the of eastern Kazakhstan.Mineral. Zhunal,l2(l), 94-100 (in Rus- description of the mineral has not yet been published. sian). J.L.J. Electron-microprobe analysis (averageof a few) gave: MnO 2.02, SnO, 1.66,TarO, 85.06,NbrO, 9.33, FeO 0.07,TiOr 0.00,LirO 1.76,sum 99.90wto/o,corresponding Kazakhstanite* to (Li' ruMno,rFeoo,)"0nr(TarorNboorSnoor)", nnOr. The E.A. Ankinovich, G.K. Bekenova,N.I. Podlipaeva(1989) mineral forms the central parts (up to 5 mm) ofred-brown A new hydrous ferrovanadian mineral kazakhstanite wodginite (crystalsup to severalcentimeters) and, at their Fe3*Vt*Vir*O3r. 8.55HrO from a carbonaceous-sili- contact, the wodginite is commonly replaced by ; ceousformation in NW Karatau (southernKazakhstan). irtyshite may also be presentalong the contact zone. The Zapiski Vses.Mineralog. Obshch.,ll8(5), 95-100 (in lithiowodginite is polysynthetically twinned, some con- Russian). taining relicts of simpsonite;color dark pink to red, trans- Combined microprobe, wet chemical, and thermal lucent, pale pink, luster adamantine, un- analysesgave KrO 0. 14, CaO 0.09, Fe.Oo 19.88, VrOo even, no cleavage,H: 5-6,1140: 1050 kg/mm2,D^,^" 12.88,VrOs 55.10, PrO5 0.17, H2O* 12.50,sum 100.76 : 7.5(2),D. n : 7.74(l) g,/cm3.No luminescencein UV wto/0,corresponding to Fe?.Vi-VijO3r.8.55H,O.The min- and cathode rays. Optically similar to wodginite in re- eral forms small (0.01 mm) round or oval grains; aggre- flected light grayish white, no pleochroism, strongly an- gates,and aggregateswith bokite, are up to 0.5 x 1.5 cm; isotropic, bireflectanceweak. Reflectancemeasurements occursin thin anastomosingveins or as a cement in brec- (nm,R,, R,o/o):48614.1, 13.0; 553 14.0,12.9;589 14.3, cias. Black color, streak black with slight brownish tint, 13.0; 656 14.0, 12.5. X-ray powder study showed the adamantine luster, dull in cryptocrystalline aggregates. mineral to be structurally analogousto M-LiTarO, and H,o: 62.69kglmm, (Mohs : 2.5).Reflectance values of wodginite;i.e., monoclinic, space group C2/c, a:9.441(3), fine-grainedaggregates (nm, Rolo):440 16.4;46015.8; 480 b: ll.516(4),c: 5.062(\ A, B : 91.06".The strongest 15.0;500 r4.3;52013.6;540 l3.l; 560 12.8;580 12.3; lines of the powder pattern (52 given) are: 3.65(82,220), 600 12.l;620 r2.0;640 12.0;660rl.9;680 11.8;700 2.987(100,22t), 2.940(50,22t),2.502(38,041), and ll.8;720 ll.7;740 11.6.D-."" : 3.4-3.6,D"^,": 3.52 r.709(32,44r). g/cm3(Z: l). Crystalsare platy, largestfaces {001}; per- The mineral occurs in albitic zones of granitic pegma- fect {001} cleavage.Soluble in cold acids. Melts at 630 tites in easternKazakhstan, USSR. The new name is for 'C. The IR spectrum has absorption bands at 470, 510, the composition. Type material is at the Fersman Min- 715,860,and 1000cm-'; diffuseabsorption bands present eralogical Museum, Moscow. J.P. 668 JAMBOR AND PUZIEWICZ: NEW MINERALNAMES

Silicon* Strontiopiemontite* M.I. Novgorodova,V.A. Boronikhin,M.E. Generalov,H. P. Bonazzi, S. Menchetti, A. Palenzona(1990) Strontio- Kramer (1989) On native silicon in association with piemontite, a new member of the epidote group, from nativegoldand other metals.DokladyAkad. Nauk SSSR, Val Graveglia,Liguria, Italy. Eur. J. Mineral., 2,519- 309(5), ll82-l185 (in Russian). 523. Electron-microprobe analysis of native silicon occur- Electron-microprobe analysesof several crystals gave ring in dioritic porphyries altered to sericite-quartz-car- CaO I 1.69(range I 0.47- I 3.2I ), SrO 13.45(12.20-1 4.62), bonate rocks belonging to an ophiolitic complex at the A1,O317.56(17.00-18.05), Fe,O. 4.89 (4.29-5.66), Mn,O, Nuevo Potosideposit, Cuba, gave Si 74.29, Au21.39, Ag | 2.93 (r 2.32-| 3.32),SiO 2 3 4.27 (33.9 7 -3 4.48),MnO 2.8 7, 2.49, O 1.84 [sum 100.01 wto/o].The small size of the }J2O1.72, sum 99.38wtolo; MnO/MnrO, wasassumed on analyzedgrain resulted in incomplete resolution from the the basisofcharge balanceand site-occupancyrefinement, surrounding gold. Microprobe analysis of native silicon and HrO was calculated to give one H per formula unit. occurring in microbrecciasthat fill thin (0. I - I .0 mm) fis- The composition correspondsto (Caotn Mno r,)", oo(Srour- suresin Archean plagiogneisses,at a depth of 10138- Caor,)"o ee (Al, r, Mno r. Feorr)r2 ee Si3Or rO(OH), simplified as 10182m in the super-deepdrillhole at the Kola Peninsula, caSr(AI,Mn3*,Fe3*)3Si3OrrO(OH). The A(2) site,as deter- USSR, gave98.53 wto/oSi. mined by X-ray crystal-structural study (R : 0.035), is The crystals of native silicon from Cuba (combination occupied mainly by Sr in strontiopiemontite and by Ca ofcube and octahedron, < 5 pm) occur in the central parts in piemontite. Occurs as prismatic crystalsup to 0.5 mm of high-purity gold grains (90-95 wto/oAu). The latter are long, elongate[010], deep red color, purple-brown streak, associatedwith prismatic crystalsof arsenopyrite.Native vitreous luster,transparent, perfect {001} cleavage,,Fl: silicon associatedwith native copper, lead, tin, nickel- 6. D^",: 3.65-3.73,D.",.: 3.73g,/cm3. Optically biaxial bearing copper, and cohenite was also found in heavy- positive, refractive indices not determined, strongly ple- mineral concentratescollected in the mineralized parts of ochroic with X: yellow-oratge, Y: violet, Z : reddish other ophiolitic complexesin the region. violet, I: b. Monoclinic, spacegroup P2 ,/ m, a : 8.862(2), The native silicon from the Kola Peninsula forms do- b : 5.682(l), c : l0.t9t($ A, p : 114.70(l).,as refined decahedral or cubic-octahedral crystals (10-80 pm) as- from a Guinier powder pattern (CuKa radiation) with sociatedwith graphite, moissanite,and native iron, or less strongestlines of 3.493(50,211),2.916(100,113), 2.836 frequently with native gold and zinc-bearingcopper. The (50,020),2.67 8(40,t 20). 2.601(s0.3 I I ), 2.| | 7(40.22r, host brecciasare cementedwith fine-grainedrock-forming and 1.590(50,331). minerals (, , , quartz) plus The mineral occurs in veinlets, 3-4 mm thick, which graphite, -like quarlz, sericite, and chlorite. cut quartz-braunite manganeseore. Associated minerals Discussion.Also reported to occur at several other lo- in the veinlets are , rhodochrosite, rhodonite, and calities, most recently in kimberlite pipes in the USSR ganophyllite. Type material is in the Museo di Mineralo- (Doklady Akad. Nauk, 305,704-707, 1989; Mineralog. gia dell'UniversitA di Firenze, Firenze, Italy. J.L.J. Zhurnal, l2(3), 17-26, I 990).The new mineraland name were approvedin 1983.J.P. Tuliokite* N.A. Yanova, D.Yu. Pushcharovskii,A.V. Voloshin ( 1990) Scandium Crystal structure of tuliokite-A new sodium, barium, thorium carbonate.Doklady Akad. Nauk SSSR,310(l), 99-102 (in Russian). S. Bergstol, G. Juve (1988) Scandianixiolite, pyrochlore, and bazzite in in Tordal, Telemark, Single-crystalX-ray structural study (R : 0.032) of tu- Norway. A contribution to the mineralogy and geo- liokite from a pegmatite in nepheline syenite in the Khi- chemistry of scandium and tin. Mineral. Petrology, 38, biny alkaline massive, Kola Peninsula,USSR, indicated 229-243. trigonal symmetry, spacegroup, R3, a: 14.175(7),c : Electron-microprobeanalysis of an altered areain ixiol- 8.605A. D-*,: 3.15,D*.: 3.25g/crn3 forNa" BaTh(CO.)u ite from Heftetjern, Tordal, Norway, gaveCaO 4.2,MnO .6HrOwith Z:3. 0.3, FeO 1.5,ScrO. 3.4,Y2O3 3.6, SnO, 1.5,UO, 9.5, Discussion.The name should not have been used prior Ta,O, 56.0,NbrO5 15.2,TiO,2.0, F 1.5,O = F 0.6,sum to publication of a complete description of the mineral. 98.1 wto/0,corresponding to cation ratios of (Ca"rrMtuor- J.L.J. Feo,,ScorrYo,uSno orlJo,r)",,r(T8, 2eNbo 58Ti0,r)r, oo. ". . . The speciesname scandium microlite is introduced since Sc exceeds20o/o of the total A-atoms and is the most Yakhontovite* abundant A-atom other than Ca." V.P. Postnikova, S.I. Tsipurskij, G.A. Sidorenko,A.V. Discussion.An unapproved name for an incompletely Mokhov ( I 986) Yakhontovite-A new copper-bearing describedmineral. J.L.J. smectite.Mineralog. Zhtmal,8(6), 80-84 (in Russian). JAMBOR AND PUZIEWICZ: NEW MINERAL NAMES 669

Microprobeanalysis gave SiO, 54.83, TiO, 0.00,AlrO3 zone of a gold deposit in argillaceoussandstone at Xing- 0.08,FerO, 15.03, FeO 0.00, MgO 6.21, CaO 2.62, CuO sao. Hunan Province. China. 15.20,MnO 0.00,ZnO 0.40, NarO 0.00, sum 94.52 wto/o, Discussion.The mineral is recognizedas a cobalt-bear- corresponding to CaoroKo o,(Fefl.{rCuo roMgo urZtoor- ing variety of willemite, and the inappropriate and un- Aloo,)"r r, [Si"O,o](OH)r.Wet-chemical analysis of impure approved name xingsaoite does not appear in the title or material containing and pseudomalachite text of the version in Chinese.The title asgiven in Chinese showed all of the Fe to be trivalent and gave KrO 0.1 l, can be translated as "Co-Zn silicate-A Co-rich variety HrO 14.55.The presenceof Cu in octahedralpositions of willemite." J.L.J. was proved by exchangeof interlayer cations with NHo. The mineral forms microcrystalline, pistachio-greenag- gregateseasily polished with a knife; 11: 2-3, conchoidal Unnamed MnSi, Mn fracture. The aggregatesadhere to wet surfaces,and dis- A.A. Kim, V.Yu. Pankov,Yu.M. Novoselov (1989)Na- perse readily in water to form a persistent suspension. tive siliceousmanganese in heavy-mineral associations TEM study showed individual crystals of the mineral to of Central Aldan. Doklady Akad. Nauk SSSR,308(3), be isometric (equant?)in habit, slightly elongate,and 0. l- 699-702. l0 pm in diameter. Optically pleo- biaxial, aggregates Electron-microprobeanalyses of poorly rounded grains chroic in blue-greentints, positive elongation, Z n c: (measuring0.6-0.8 mm) consisting of an exsolved phase l2-14o,a * 1.530-1.545,1= 1.560-1.575.Theinfrared and its host gave,for the exsolvedphase: Mn 86.94, Fe spectrum of the mineral is closeto that of and 5.23,Si 3.59,P 0.17, C 4.26, sum 100.19wto/o (one of hasabsorptions at 3705 and 3550 The cm-'. DTA curve, three analyses), corresponding to (Mn,Fe)r(C,Si); two similar to that of nontronite, exhibits endotherms at 150, analysesof the host gaveMn 87.26, 86.33,Fe 7.93, 7.12, 410 (weak),600, and 700 'C; exotherms appearat 300 Si 4.81,5.97, P 0.35,0.30, sum 100.35,99.72 wto/o. The (weak) and 7 40'C. X-ray and electron-diffraction studies results correspondto aMn or BMn according to the Mn- showedthe mineral to be probablymonoclinic, a: 5.26, Si phasediagram. ,: 9.108,c* sin 14 A. Strongestlines powder B: of the Grains are steel-graywith a creamy tint; surfacesare pattern are I (00I 7. 3.9 ), 30(002),4. 5(003,0 20), 3.2(004), rough-textured, like lizard skin. Luster metallic. The and 2.88(005;A. After treatmentwith glycerin and eth- exsolvedphase is platy to vermicular and is I x 5-10 pm ylene glycol, doo,increases to 17.9 and 17.6 A, respec- to 2 x 20-30 pm. In reflected light the host phase is tively. isotropic; the exsolved phase is weakly anisotropic and The mineral occurs, in deeply oxidized sulfide-cassit- has a reflectanceclose to that of the host. Reflectance erite ores of the Komsomolsk region (Soviet Far East),as measurements(results identical for the host and exsolved veins up to 0.5 cm and as coatings on leached spacesin phase;nm, Ro/o):420 54.1;44054.9; 460 55.8; 480 56.9; pyrrhotite, chalcopyrite, pyrite, and stannite. Associated 500 57.8;520 58.6;540 59.2;560 59.7;58060.1; 600 minerals are malachite,pseudomalachite, chrysocola, iron 60.5:620 61.0; 640 6r.5; 66061.9; 680 62.3;700 63.0; hydroxides, and quartz. The name is for the Russian min- 720 63.8;740 64.4;760 64.9.Microhardness 908-1095 eralogist L.K. Yakhontova. Type material is at the Fers- kg/ mm2(host), I 049 kg/ mm2(exsolution phase).The host man Mineralogical Museum, Moscow, USSR. J.P. contains dropJike inclusions of tephroite. An X-ray pat- tern ofa grain consisting ofthe host plus exsolved phase has strongestlines of 2.105(100),1.998(90), 1.909(40), Xingsaoite r.691(30),and 1.170A (+o). Yuchun Zhen,ZhenhengHuang (1989)Xingsaoite-A va- The minerals occur in the nonmagnetic fraction of a riety of Co-rich willemite. Acta Mineral. Sinica, 9(l), heavy-minerals concentrate collected from alluvial de- 33-36 (in Chinese,English abstract). posits from the Taezka,Malaja Yukhta, and BolshajaYu- The averageofthree electron-microprobeanalyses gave khta streams,Central Aldan, Siberia, USSR. J.P. ZnO 47.01, CoO 25.41,SiO.'27.36,[sum 99.78 wto/o], corresponding to Zn ideally (Zn,CO)SiOo. t26CO0rosir 0ooo, Ag, Agr.rBir.rSi,. The mineral is dark blue-violet, Il,oo : 548-68 I kg/mm2, .Bir..Sno optically bright blue to peach-redcolor, uniaxial positive, W.G. Mumme (1990) A note on the occurrence,com- e -- 1.722-1.723,a: 1.713-1.714,D^"": 4.04-4.12 position and crystal structuresof pavonite homologous 4P, 6P, 8P. g/cm3. Grains are subhedral to euhedral, but mainly an- seriesmembers and Neues Jahrb. Mineral. 193-204. hedral aggregates;some grains show a hexagonalpyramid, Mon., and crystal size is 0.012-0.027 mm. The X-ray powder Electron-microprobeanalysis (not given) of a specimen pattern, similar to that of willemite, has strongestlines at from Felbertal, Austria, gave the composition Cuo"- 3.4986(I 00,220), 2.8428(100, I I 3), 2.6389(I 00,I 40), AgoroPboruBiro,Sn.Single-crystal X-ray study indicated 2.3220(60,330),l. 8620(60, 3 30), r.4220(80,713), and monoclinic symmetry,a: 13.83,b : 4.40, c : 14.72A, 1.3396 A lSO,OeO;.Calculated cell parametersare a : P : 97.50. An equivalent mineral, which coexists with 13.9559,c:9.3364. The mineraloccurs in the oxidized hammarite in interstices in diopside and chrondrodite, 670 JAMBOR AND PUZIEWICZ: NEW MINERAL NAMES occursin a specimenfrom Baita Bihorului (formerly Rez- gaveAg 71.80,Cu 0.02, Pb 0.12, Fe 3.61,Sb 0.76, As banya), Rumania. Single-crystal X-ray structural study 0.01, Te 17.68,S 8.94, sum 102.94wt0/0, corresponding and electron-microprobe analyses (not given) indicated to Ag, ,uPboo,Feo nrSbo-orTe, nnSo oo, possibly Ag'oFeTerSo. an intergrowth of two closely related monoclinic (space The minerals occur in the metamorphosedvolcanogenic group C2/m) phases,one with a : 13.37,b : 4.05, c : LAngdalpolymetallic sulfidedeposit, southwest ofBoliden -- 14.71L, P:99.5', and the otherwith a: 13.37,b in the Skellefteore district, northeasternSweden. J.L.J. 4.05, c : 14.96A, p : 100.5'.The major componenthas the compositionCu,,rA&r,Pb'27Bi5 j5Se and the other correspondsto Cu, urAguoPbo66Bi502Se.The cell dimen- sions and compositions indicate that the three minerals Unnamed (Ni,Fe,Co)AsS oP, are the equivalent of the pavonite homologue ideally M.Z. Abzalov,L.I. Polezhaeva(1989) Sulfoarsenidesin (Cu,Ag),jBis 5Se. rocks ofproductive beds ofPechenga(Kola Peninsula). Electron-microprobe analysis of a grain in a specimen T.apisktVses.Mineral. Obshch.,I l8(4), 64-73 (in Rus- of berryite from the Mike mine, San Juan County, Col- sian). gave orado, Cu 3.54,Ag 10.76,Pb 12.56,Bi 54.82,S Microprobe analysis of an anisotropic mineral similar 17.40,sum 99.08 wtolo,corresponding (Cu, to ,Agr rrPb,or- to arsenopyritegave Fe 8.43,Co 8.66,Ni 13.24,As 48.63, Biurn)",, ideally Me,,S,r. Single-crystalX-ray struc- orS,., S 18.41,sum 97.37 wt0/0,corresponding to (Nio' Feorr- tural study showed the grain to be twinned and to be Coo,o)- .u As, ouSo no. The mineral occurs in the metased- monoclinic, group - : space C2/m, a: 13.41,b 4.05, c imentary rocks of the Pechengasynclinorium (Kola Pen- 21.51A, : P 94.5'.Cell dimensionsand compositionare insula, USSR) and is associatedwith arsenopyrite, cob- similar to thosereportedby Karup-Moller and Makovicky altoan arsenopyrite,cobaltite, and gersdorffite. (ProgramAbst. I 4th Gen.Mtg. I MA, I 986, July Stanford Discussion. Apparently the nickel member of the ar- California, p. 138) for Cu-rich and Cu-deficient phases senopyritegroup. A more complete description is needed. from the Alaska Silver mine, The phase Colorado. Cu-rich J.P. correspondsto Ag.u, Cu, uoPb, u, Biu ,o S,r, and the other correspondsto Ag, ,, Cuo,, Pb, ,oBiu ., S,r; respectivecell parametersare a : 13.48,b : 4.06, c : 21.72 A, O : 93.9",and a: 13.47,b: 4.06,c:21.63 A,0: gZ.g'. Ferric sulfate All three phasescorrespond to the 8Phomologue of pavo- Wang, Wanmao Li (1988) Crystal structure of a nrte. Qiguang newferric sulfate mineral. Kexue Tongbao, 33(l), 1783- Discussion.)Me for the formulas by Karup-Moller and 1787 (in English). Makovicky (1986)are 12.05and 11.48,respectively. The aPand 8Pphases are reported by the author to have been A ferric sulfate mineral of composition [no analysis givenl Fe, (x * 0.33) occurswith anhy- submified to the CNMMN-IMA in 1986, bur "ro rhis "(SOo)r'l4H,O stage their status has not been recognizedor approved, drite in the oxidation zone of the Xitieshan mine, Qinghai although the nomenclatorial problems which were given Province, China. The mineral is light violet, turning dark as a reason for this delay have long been solved." J.L.J. red and amorphous on exposureto air. X-ray single-crys- tal structural study (R : 0.026) indicated triclinic sym- metry,space group Pl, a:6.448(16), b: 15.248(21),c : : 100.93(2),7:94.12(2)', AgSbTerSo, AgroFeTerSo 6.307(rq A, a:90.14(2), P D-"". : 2.17, D" k : 2.20 g/cm3with Z : 1. The absence S. Karup-Moller, E. Makovicky, G. Pilstrdm (1989)Min- of Fe2*was confirmed by Mdssbauerspectroscopy. J.L.J. eralogy of the sulphosalt zone at the Llngdal deposit, Boliden district, northern Sweden.Neues Jahrb. Min- eral. Abh.. 160. 299-327.

Three electron-microprobeanalysis of microscopiclaths Bar(Tir.rNbo.r)Sioors.o in galenagave Ag 65.84, 67 .92, 67 .23, Cu 0.01, 0.00, 0.0 l, Pb 0.07,0.10,0.05,Fe 0.08,0.07,0.07,Sb 8.81,9.45, N.A. Yamnova, D.Yu. Pushcharovskii, A.V. Voloshin (1990) new 9.05,As 0.07,0.03, 0.05, Te 17.80,15.31, r7.23,5 8.49, Crystal structure of a barium sil- icate. Kristallografiya, 3 5(2), 3 46-348 (in Russian). 9.67, 8.84, sum l0l.l8, 102.58,102.55 wtVo, approxi- mating Ag, ,Sb, o-,,Te, n_,oS, *, n,possibly Agn(Sb,As)TerSo. X-ray crystal-structural study (R : 0.040) of a Ba-Nb The formula is close to that of benleonardite Agr(Sb,- silicate from carbonatite at Vuoriyarvi, Kola Peninsula, As)TerSrr, but the laths are too small to obtain X-ray USSR, indicated hexagonalsymmetry, spacegroup P62m, data. In addition to the apparently homogeneouslaths a : 9.03(l), c: 7.868(6)A. ttre formula from a chemical from which the above compositions were obtained, some analysis [not given] is BarTiNboSioOr.;the structural for- laths are decomposition intergrowths consisting of the mula is Ba.(Ti,2Nbo8)Sioo2ro,D-".. : 4.16,D"^": 4.29 AgnSbTerSnphase with galenaand lamellar to myrmekitic g,/cm3with Z: l.The synthetic analogueis BarNboSioOru. grains of a phasefor which electron-microprobeanalysis J.L.J. JAMBOR AND PUZIEWICZ: NEW MINERAL NAMES 671

New Data The generalformula is Car(MgFe'z*,Fe3*,Ti)u(Si,Al)6O2o, related to that of the aenigmatite group. Rhiinite Discussion.The compositions, as written, indicate that E. Bonaccorsi,S. Merlino, M. Pasero(1990) Rhtinite: more than a single name is merited. J.L.J. Structural and microstructural features, crystal chem- istry and polysomatic relationships. Eur. J. Mineral., 2, 203-218. Volborthite X-ray crystal-structural study of rhiinite from the A1- M.A. Lafontaine,A. Le Bail, G. F6rey (1990) Copper- lende meteorite and from volcanic breccias at Scharn- containing minerals- l. CurVrOr(OH)r.2HrO: The hausen,Germany, gavethe following structural formulas: synthetic homolog of volborthitel crystal structure de- termination from X-ray and neutron data; structural Scharnhausen:(Ca, (Mg, rNao,) oFefrj)(Mg,nFel i)Tio- correlations.J. Solid StateChem.. 85.220-227. (si3Al3)o'o X-ray and neutron powder-diffraction study of syn- Allende: Ca,(Mg, j)(Mg, j)- ,Fefr ,Al0svo 3Ti3iTil thetic volborthite gavemonoclinic symmetry, spacegroup (si,Al,)Al,o,o C2/m,a: 10.604(4),b: 5.874(l),c:1.213(! A, B : Other analyses: (Ca,Na)r(Fer*,Mg)r(Mg,Fe3*,Ti4*)3- 94.90(3F (X-ray). The determination of the specificspace (Ti4rFe3*)(Si,Al)6Oro group is new. J.L.J.