American Mineralogist, Volume 73, pages 189-199, 1988

NEW MINERAL NAMES*

Fn-lNx C. H,lwrHonNnDepartment of Earth Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada

EnNsr A. J. BunxnInstituut voor Aardwetenschappen, Vrije Universiteite, De Boelelaan 1085, 1081 HV, Amsterdam, Netherlands

T. Scorr EncrrMineral Sciences Division, National Museum of Natural Sciences, Ottawa, Ontario KIA 0M8, Canada

Eowlnn S. GnnwDepartment of Geological Sciences, University of Maine, Orono, Maine 04469, U.S.A.

Jorr, D. GnrcpMineral Sciences Division, National Museum of Natural Sciences, Ottawa, Ontario KIA 0M8, Canada

JonN L. JuvrsonCANMET, 555 Booth Street, Ottawa, Ontario KIA 0G1, Canada

Jlcnx PuzrnwtczInstitut ftiLr Kristallographie und Petrographie, Universit?it Hannover, Hannover, Federal Republic of Germany

ANonnw C. RospnrsGeological Survey ofCanada, 601 Booth Street, Ottawa, Ontario KIA 0E8, Canada

Dllro A. V,lNxoDepartment of Geology, Georgia State University, Atlanta, Georgia 30303, U.S.A.

Alacranite*

V.I. Popova, V.A. Popov, A. Clark, V.O. Polyakov, S.E. Bori-sovskii ( I 986) Alacranite AsrSr-A new mineral. Zapiski Vses.Mineralog. Obshch., 115, 360-368 (in Russian).

Analysis by electron microprobe (average) gave As 67.35, S32.61, sum 99.96 wto/0, yielding the formula AsrrrSror, ideallyAsrSr. There is no visible reaction with HCI or HNOr. In 5MKOH, the mineral turns brown; on heating it then disintegratesinto brown-gray flakes and prolonged boiling turns these flakesdark brown. The melting temperature in air is 350 + 5 .C.

X-ray studies show the mineral to be monoclinic, space groupP2/c , a : 9 .89(2) , b :9 .73(2) , c : 9 .13(1) A , B : tOt . t+ (Sf ,Z: 2, D*rc: 3.43, D-,

": 3.43 + 0.03. The strongest l ines (29

g i v e n ) a r e 5 . 9 1 ( 9 0 X l l l ) , 5 . 1 1 ( 8 0 X 1 l l ) , 4 . 0 5 ( 7 0 X l l 2 ) ,3.2e 1 (s0x022). 3.064(r 00x3 l 0), 2.9 50(90)(222).

The mineral occurs with realgar and usonite as flattened andprismatic grains up to 0.5 mm across, serving as cement in sandygravel in the Uson caldera, Kamchatka. An earlier-describedoccurrence of the mineral, although it is not as well character-ized, is in the Alacran deposit, Pampa Larga, Chile. There, themineral is associated with realgar, orpiment, native As and S,stibnite, pyrite, greigite, arsenopyrite, arsenolamprite, sphalerite,and acanthite, within barite-quartz-calcite veins. Crystals ofala-cranite have pinacoidal prismatic habit, somewhat flattened on[100]. Major forms are {100}, { l l1}, and { l1l}; minor or weakforms are {l 10}, {011}, {41 l}. Striations parallel to [001] occuron {100} faces. The remaining faces appear dull or tarnished.Luster is adamantine, greasy, streak is orange-yellow, fracture isconchoidal and very brittle. The mineral is transparent, nonflu-

* Minerals marked with an asterisk were approved before pub-lication by the Commission on New Minerals and Mineral Namesof the International Mineralogical Association.

0003-004x/88/0 I 02-0 I 89$02.00

orescent, with imperfect cleavage on {100}. Indentation micro-hardness is 69 kglmm'? (20-g load), and H : 1.5. In transmittedlight the mineral is orange-yellow, biaxial positive, a: 2.39(l),

t : 2.52(2), nonpleochroic. In reflected light, light gray withrose-yellow internal reflection. Reflectance values (nm,Ri, Ri) are 400,14.0,13.0; 425,14.6,13.2; 450,14.8,13.3;47 5 , r 4 .8 ,13 .4 ; 500, 14 .5 , I 3 . 3 ; 525,14 .3 , r3 . I ; 550 , I 4 .5 , I 3 .2 ;57 5 , r 4 .7 , r3 .4 ; 600, 14 .8 , I 3 .5 ; 625,14 .9 ,13 .6 ; 650, I 5 .0 , I 3 .7 ;675, 1 5.0, I 3.8; 700, I 5. I , I 3.90/0.

The name is for the earliest described occurrence. Type ma-terial is at the Fersman Mineralogical Museum, Moscow, andthe Il'menskii Preserve Museum, Miass. D.A.V.

Althupite*

P. Piret, M. Deliens (1987) Uranyl and aluminum phosphatesfrom Kobokobo. Althupite, AlTh(uoJlGJo,)3o(oHXPo.)J'-(OH)r. l5HrO, a new mineral. Properties and crystal structure.Bull. Min6ral., ll0, 65-72 (in French).

The average of l0 electron microprobe analyses gave AlrOt1.75, ThO, 10.25, UO3 68.22,P'Os 9.86, and HrO (ditrerence)9 .92 wto/o, which compares well with the calculated values of thestructural formula given above.

X-ray powder-diffraction studies and the structure determi-nation on a single crystal show the mineral is triclinic, space

sroup PI, a : 10.935(3), b : 18.567(4),c : 13.504(3) A, a :

72.64(2), 0 : 68.20(2\, t : 84.2r(2), V : 2434(I) A', z : 2.The strongest X-ray diftaction lines (3 9 given) are I 0. 2( I 00)( I 00),6.67 (40)(r 20), 5. 80(5 0X t 2 I ) , 5.08(70X20 0), 4.9 | (40)(22 t),4.4r(so)(22r,123), 4.07 (40)(140), 3.395(40X300), 3.07 l(40X06 l),3.000(408), (3 42,30 l), 2. 8 96(50X044, 324). The refi ned crystalstructure (R : 0.082 for 4220 reflections) consists of(UOr)3O(OHXPO)J;'- layers that characterize the phosphuran-

1 8 9

190 NEW MINERAL NAMES

ylite structure group. Layers are connected by two joined octa-hedra around Al, one tri-capped trigonal prism around Th, andone pentagonal bipyramid around U.

Althupite occurs as thin, transparent yellow tablets, with max-imum length 0. I mm along {00 I } and flattened on ( I 00). D^*" =3.9(1) and D".k : 3.98 g,/cm3. Optically it is biaxial negative; o: r.620(3), P : r .66r(2), t : r .665(2), 2v^"

": 3t(3) ' ,2v"i l . :

34'; pleochroism, X pale yellow, Y and Z darker yellow; disper-sion, strong r < v, X = [l00], Z A c = 15.

The mineral occurs in a pegmatite with beryl and columbiteat Kobokobo, Kiku, Zaire. The name alludes to the chemistry.Type material is deposited in the Mus6e royal de I'Afrique central,in Tervuren, Belgium. J.D.G.

Bobfergusonite*

T.S. Ercit, A.J. Anderson, P. Cern!, F.C. Hawthorne (1986)Bobfergusonite: A new primary phosphate mineral from CrossLake, Manitoba. Can. Mineral.,24, 599404.

Microprobe, Mossbauer spectroscopy, and rcn -ec analyses gaveNa,O 6.8, MgO 0.3, CaO 1.2, MnO 31.7, FeO 0.3, ZnO O.l,Alro3 7.5, FerO, 6.9, P,O,45.2, HrO 0.3, total 100.3 wt0/0. Thesemiempirical formula, (Na, orMno rrCa" roE, ro)-(Mn, u, Al, rr-Feoff,MgoorFefir'zlnoo,)*Prr, (O236eOH03,)r2o @asis 24 (O + OH),considered with crystal-structure data, gives the ideal formulaNarMnrFe*3Al(POn)u and Z : 4. Chemically distinct from mem-bers ofthe wyllieite and alluaudite groups.

Bobfergusonite is monoclinic, space group P2r/n, with a :1 2 . 7 7 3 ( 2 ) , b : 1 2 . 4 8 6 ( 2 ) , c : 1 1 . 0 3 8 ( 2 ) A , B : 9 7 . 1 5 " . T h estrongest lines of the X-ray powder pattern (53 given) are3.054( r 00x4 r l ) , 2. 869(66X 4 | r), 2.7 12(49)(042), 2. 508(5 3)(432,024,4r3), 2.082(67)(610,060), and 1.575(43X046,802). Themineral is structurally related to both the wyllieite and alluauditegroup of minerals, and all three have very similar powder pat-terns. The structural types can be readily distinguished on thebasis of precession single-crystal (10/)* photographs.

The mineral occurs as abundant anhedral equant crystals thatrange in size from less than I mm to 1 cm long. Bobfergusoniteis variable in color, ranging from green-brown to red-brown, isnonfluorescent, has a yellow-brown streak and a hardness of 4,is brittle, shows perfect {010} cleavage, and has a prominentI I 00] parting. The luster is resinous except on the parting surface,which shows a characteristic bronzy luster. D-*" (Berman bal-ance) : 3.54(1). D*t": 3.57. Optically biaxial positive; a :1.694(r), B : 1.698(1), 1 : L7 r 5(2), 2v^.". : 46.4(2f , 2V^" :

52'. The optical orientation is I ll D and a A X: +10'in theB angle. Pleochroism is moderate with X: I: yellow-orange,Z : oftnge. The mineral is transparent in thin fragments. Theabsorption isZ > X = Y.

The mineral was found in nodules in the intermediate zonesof an unnamed pegmatite at Cross Lake, Manitoba, Canada (lat54'41 'N, long 97'41 'W). Associated phosphate minerals are beu-site, fillowite, triplite, apatite, an unknown Mn phosphate, andminor alluaudite.

The name honors Robert Bury Ferguson, Professor Emeritus,University of Manitoba. Holotype material (grams) is preservedin the collections of the Mineralogical Museum, University ofManitoba, Winnipeg, Manitoba, Canada (M6083), and the RoyalOntario Museum, Toronto, Ontario, Canada (M42687). A.C.R.

Chromferide*

M.I. Novgorodova, A.I. Gorshkov, N.V. Trubkin, A.I. Tsepin,M.T. Dmitrieva (1986) New natural intermetallic compounds

of iron and chromium - Chromferide and ferchromide. ZapiskiVses. Mineralog. Obshch., 115, 355-360 (in Russian).

Analysis by electron microprobe gave Fe 88.91 (88.71-89. 12),Cr 11.30 (11.06-11.55), Si not observed, sum 100.21 (100.18-100.26) wt0/0, yielding a suggested formula of Fe'rCrorlor, orFe, rCror-", where E represents vacancy.

X-ray study shows the mineral to be isometric, space groupPm3m, a : 2.859(5) A, Z: t , D",": 6.69. The l ines (7 given)are 2.87 (20)Q00), 2.02( I 00X I i 0), 1.6 56( 1 0X I 1 I ), 1.43(80X200),1.28(50X120), l . l6(100x21 1), r .0l(70x220).

The mineral occurs as small grains (of submicrometer size;aggregates to hundreds of micrometers) in quartz veins withinbrecciated amphibolite and schist of the southern Urals. Asso-ciated minerals include native iron, copper, bismuth and gold,ferchromide, graphite, metal carbide (cohenite), halite, sylvite,and Cl-rich scapolite (marialite). Chromferide is opaque, lightgray, ferromagnetic, with metallic luster and no cleavage. Mi-crohardness (100-9 load) is 260 + l0 kglmm'?, with weakly con-cave indentation shape. Reflectance values in air are (nm,o/o):440,50.4; 460,5r.4; 480,50.9; 500,52.6; 520,53.0; 540,55.3;560,56.5; 580,56.9; 600,57.9; 620,58.3; 640,59.0; 660,60.0;680,60.7; 700,60.8; 7 20,61.7 ; '7 40,61.9.

The name is for the chemical composition. Type material isat the Fersman Mineralogical Museum, Akademiya Nauk SSSR,Moscow. D.A.V.

Ellenbergerite*

C. Chopin, R. Klaska, O. Medenbach, D. Dron (1986) Ellen-bergerite, a new high-pressure Mg-Al-(Ti,Zr)-silicate with anovel structure based on face-sharing octahedra. Contrib. Min-eral. Petrol.. 92. 316-321.

The phengite quartzite layer of the Dora Maira crystalline mas-sif, western Alps, locally contains near-end-member pyropemegacrysts, some of which exceed 20 cm in diameter. The garnetcontains numerous mineral inclusions, among which ellenber-gerite makes up to a few modal percent of the megacrysts. El-lenbergerite is typically millimeter-sized, anhedral, rarely as prismsup to 10 mm long with a hexagonal cross section. Transparent,purple to lilac color with a few grains showing a pink or smokycore; vitreous luster, H : 6.5, fracture easy and brittle; D-*, :

3. I 5 for most grains, tp to 3.22 g/cm3 for a few; D-" : 3. 10 fora Ti-rich composition, 3.17 g/cm3 for a Zr-ich one (Z : 1).Nonfluorescent in ultraviolet light, faint bluish cathodolumi-nescence under the electron beam.

Electron-microprobe analyses (1 3 given) range from SiO, 32.5 1-38,6 1, P,Os 0.00-8.27, Al,O3 20.41-24.91,TiO'0.52-4.10, Z;fr20.0G-3.10, MgO 21.80-25.80, FeO 0.15-{.43 wt0/o; a coulometricdetermination on a 6-mg sample gave 8.0 wto/o HrO. The ana-lytical results and a crystal-structure determination (R = 3.40lQindicate an ideal formula (Mg,,Tin,, nu,),Mg6Al6SiO*(OH)'ofor the P-free end member. P incorporation is related mainly toSiAl = PMg substitution.

Ellenbergerite is uniaxial negative; vividly pleochroic with tocolorless, e colorless to deep lilac with color zoning. At 589 nm,co : 1.6789(5) to 1.6553(5), e : 1.6697(10)to 1.6538(10); highest<^r values are for samples rich in Ti, and the color zoning is relatedto nearly complete Ti-for-Zr substitution; variations in r are moredependent on the P content. The mineral is hexagonal, a :

12.255(8), c : 4.932(4) A, space gloup P6r; strongest lines oftheX-ray powder pattern (114.6-mm camera, Cu radiation) are3. 6 l (50X20 r ), 3. 5 4(7 5X300), 3.06(5 s)(220), 2.6 s 3(7 0)(400),2. r86(5sX32 1).

NEW MINERALNAMES 1 9 1

The mineral occurs at Parigi, near Martiniana Po, Italy, in aphengite-pynope quartzite outcrop containing coesite. Associatedinclusions in the pyrope porphyroblasts are kyanite, talc, clino-chlore, rutile, zircon, and a sodic amphibole close to glaucophane.The structure of ellenbergerite has face-sharing octahedra, re-sulting in a dense structure. The new name is for Prof. FrangoisEllenberger, Paris, in recognition of his geological work in thewestern Alps. The type material is at the Ecole Nationale desMines, Paris; cotype specimens are at the Galerie de Min6ralogie,Universitd P. et M. Curie, Paris, and at the Institut fiir Mine-ralogie, Ruhr-Universitlit, Bochum, Federal Republic of Ger-many.

Discussion. The name ellenbergerite is intended by the authorsto apply to both the titanian and zirconian varieties ofthe min-eral. Also found, late in the study, is a P-rich variety with 16wto/o PrOr, space group P6rmc, whose status remains to be clar-ified. J.L.J.

Ferchromidet

M.I. Novgorodova, A.I. Gorshkov, N.V. Trubkin, A.I. Tsepin,M.T. Dmitrieva (1986) New natural intermetallic compoundsof iron and chromium - Chromferide and ferchromide. ZapiskiVses. Mineralog. Obshch., I15, 355-360 (in Russian).

Analysis by electron microprobe gave Fe 12.60 (12'55-12'65),Cr 87.58 (87.53-87.63), Si 0.0, sum 100.18 wto/o, yielding a sug'gested formula ofCr, ,Feo rflo r, orCr, ,Feo r-,, where E representsvacancy.

X-ray study shows the mineral to be isometric, space group

Pm3m, a: 2.882(5) A,z: t , D""r": 6.18. The l ines (8 given)

are 2.88(10)(100), 2.04(l00Xl 10), 1.66(50X1 1 l) , 1.44(60X200),1. 2e(s0x 1 20), 1. 1 7(90X2 I I ), r.02(1 0)(220), 0. 77(80X32 I ).

The mineral occurs as small grains (of submicrometer size toaggregates hundreds of micrometers) in quartz veins within brec-ciated amphibolite and schist of the southern Urals. Associatedminerals include native iron, copper, bismuth, and gold, chrom-feride, graphite, metal carbide (cohenite), halite, sylvite, and Cl-rich scapolite (marialite). Ferchromide is opaque, light gray, fer-romagnetic, with metallic luster and no cleavage. Microhardness(100-9 load) is 900 + 20 kg/mm2, with weakly concave inden-tation shape. Reflectance values in air are (nm,o/o): 440,55.2;460,55.4; 480,56.2; 500,56.9; 520,58.0; 540,58.8; 560,59.5;580,60.4; 600,61.0; 620,61.0; 640,61.8; 680,62.8; 700,63'2;'120,63.8; 740,63.8.

The name is for the chemical composition. Type material isat the Fersman Mineralogical Museum, Akademiya Nauk SSSR,Moscow. D.A.V.

Kamiokite+

A. Sasaki, S. Yui, M. Yamaguchi (1985) Kamiokite, Fe'MorOr,a new mineral. Mineral. Jour. (Japan), 12,393-399.

The average of three electron microprobe analyses usingFeMoOo and MnO as standards gave FeO 27.04, MnO 0.41,MoOr7 | .24, sum 98.69 wt0/0, resulting in (Fez o,Mfu or)"2 *I\4oz grOeon a basis ofO : 8. Powder and precession X-ray studies showthe mineral to be hexagonal, a:5.'182(2),c: 10.053(3) A, spacegroup P6rmc, Z : 2. The strongest diffraction-maxima in thepowder pattern (20 given) are 5.03(100X00.2), 3.55(90X10.2),2.509(75X00.4,r 1.2,20.0), 2.430(55X20. l) , 2.006(40X20.3) (dif-fractometer data) using FeKa radiation and quartz as an intemalstandard.

The mineral is black, opaque, metallic to submetallic luster,

black streak. In transmitted light, strongJy anisotropic, no internal

reflection. Low reflectivity in reflected light, strongly bireflectant

from gray to olive-gray, and strongly anisotropic from light

brownish gray to dark greenish gray. Reflectance values' in air,

arc 16.0-23.6 (480), 15.3-22.9 (546), 14.7-22.2 (589), 14.3-22.r(657 nm). Perfect {0001} cleavage, even fracture, VHN,6 :

600(32), Mohs' H : 4.5, D^*: 5.96, Da": 6.02 g/cm3. Ka-

miokite ranges up to 3 mm in diameter, as granular to thick'

tabular hexagonal crystals.The type locality is the Kamioka silverJead-zinc mine, Gifu

Prefecture, Japan, after which the mineral is named. The host

deposits are stockworks of molybdenite-bearing quartz veinlets

in granitic dikes and in migmatitic masses of dioritic composi-

tion. Associated minerals arc qtartz, molybdenite, K-feldspar'

fluorite. ilmenite. and scheelite. The intimate presence of mo-

lybdenite, which commonly replaces kamiokite along edges and

cleavage planes, implies that kamiokite is stable only at very low

f,, fugacities. The mineral is also found at the Mohawk and Ah-

meek mines, Michigan.Type material is at the Museum of the Geological Survey of

Japan, Tsukuba, the National Science Museum, Tokyo, and the

Sakurai Museum, Tokyo, Japan. T.S.E.

Ikmotoite-(Y)+

M. Deliens, P. Piret (1986) Kamotoite-fl| a new uranyl and raleearth carbonate from Kamoto, Shaba, Zaire. Bull. Min6ral''lO9, 643-647 (in French).

The average of 19 electron-microprobe analyses on several

crystals gave UO3 63.39, YrO3 6.19, Nd,O3 2.36, SmrOt 1.91'

Gd,O, 2.10 and DyrO, 1.64, CO, (by chromatography)'1 .24,HrO(loss at 800'C minus o/oCOu) 14.30, sum 99.13 wt0/0, which

on the basis of 21 oxygen atoms corresponds to 4.07UOr'0.92(Y,Nd,Gd,Sm,Dy)rOr'3.02CO,'14.5H'O, or ideallv 4UO''(Y,Nd,Gd,Sm,Dy)'O' 3COz 14.5H,O.

Single-crystal and X-ray powder-diffraction studies show the

mineral to be monoclinic, space group P2,/n, a : 21.22(l), b --

t2.93(I), c : 12.39(l) A, B : tI5.3(lF, Z: 4.The stronsest X-

ray difraction lines (39 given) are 8.49(80X01 1)' 6.48(100X020),3.9 3 (3 5)(2 | 3,21 3), 3. 4 9 (40)( 222,22:3), 3. 0 54(60X402,404)'2.7 62@0)t@22,424), 2. | 32(40X8 I l, 8 I 5), r.7 49 (40)(6 1 4,6 | 1 ).

The mineral occurs as crusts of elongate (to 5 mm)' brightyellow blades on uraninite. Good cleavages on {001} and {I01},D-""" : 3.93 and D*'" : 3.9 4 E/ cm3. Optically it is biaxial negative

with a : r.604(2), P : r.661(2), t : r.73r(3), 2V*. : g7'.

pleochroism, X colorless, Y pale yellow-green, Z bright yellow;

absorption Z > Y > X, X : b, Y n c : 25', Z : a.The mineral was found in the copper-cobalt deposit of Ka-

moto, southern Shaba, Zaire; hence its name. Type material is

deposited in the Mus6e royal de I'Afrique central, in Tervuren,

Belgium. J.D.G.

Keiviite-(Y)*

A.V. Voloshin, Ya.A. Pakhomovsky, F.N. Tyusheva (1985) Kei-viite-(Y)-A new yttrian diorthosilicate, and thalenite fromamazonite pegmatites of the Kola Peninsula. Diortho- andtriorthosilicates of yttrium. Mineralog. Zhurnal, 7 (6),79-94(in Russian).

Four microprobe analyses ofcrystals on keiviite-(Yb) and thosefilling fissures in quartz and fluorite gave, respectively, YrO3 40'86,

t92 NEW MINERAL NAMES

45.86, YbrO3 15.36 , 11 .81 , Er .O, 6 .50 ,4 .40 , LurO,2 .6 l , 1 .05 ,Tm,O, 1 .99 , 1 .11 , Dy .O, 1 .53 ,2 .92 , Ho,O, 0 .85 , 1 .27 ,Tb2O10.10,0 .00 , Gd,O3 0 .08 , 0 .62 ,CaO 0 .00 ,0 .30 , S iO,30.85 , 30 .49 ,total 100.73, 99.83 wt0/0, corresponding to (Y,YbLSLO,. The X-ray powder pattern ofthe mineral is identical with that ofkeiviite-(Yb), so monoclinic symmetry and space group C2/m-Cl,wereassumed by analogy. Unit-cell data: a :6.845(5), b : 8.960(5),c : a.BaQ) A, B : tOt.OS(5)' ,2:2. The srrongest X-ray l ines(65 grven) are 4.65(90)(001), 3.23(100)(021), 3.04(80X201),2.280(70)(112,131). Three weak lines have ftkl values that do notcorrespond to the assumed space group.

The mineral is colorless to white. Streak white, luster glassy.No fluorescence; yellow-green cathodoluminescence. H : 4 to 5,VHro : 1400, VH4o : 1200 kg/mm,. No cleavage, uneven frac-ture. D."," : 4.45, D.a": 4.48. Biaxial negative, 2V^"

": 56(2),

2 V * " : 5 5 o , a : 1 . 7 1 3 ( 1 ) , P : 1 . 7 4 8 ( r ) , 7 : 1 . 7 5 8 ( 1 X 5 8 9 n m ) .X n c : 4, Y /\ a : 7", Z : b, r < v.

Keiviite-(Y) forms prismatic crystals, 0.05 to I mm long andless than 0.1 5 mm thick, situated on keiviite-(Yb) or in fissuresin quartz and fluorite, associated with thalenite, xenotime, bast-niisite and kuliokite-(Y). The mineral was found in amazonitepegmatites of the KoIa Peninsula (USSR). The name is derivedfrom keiviite-(Yb). Type material is at the A. E. Fersman Min-eralogical Museum, Akademiya Nauk SSSR (Moscow). J.P.

Kuliokite-(Y)*

A.V. Voloshin, Ya.A. Pakhomovsky, F.N. Tyusheva, Ye.V. So-kolova, Yu.K. Egorov-Tismenko ( 1984) Kuliokite-(Y)-A newyttrium-aluminium fluoride-silicate from amazonite pegma-tites of the Kola Peninsula. Mineralog. Zhvrral, 8(2), 94-99(in Russian).

Chemical composition of the mineral is variable (five micro-probe analyses are given); results for crystals filling fissures inpegmatites and for inclusions in fluorite are, respectively, YrO,3L01,57 .95 , Yb,O3 21.06 , l .77 ,Er rO,8 .16 , 1 .40 , DyrO, 4 .18 ,0.83, Lu,O, 2.28,0.33, cd,O3 0.30, 0.19, TmrO, 1.90,0.24,Ho,O, 1.23, 0.29, A12O36.51,7.69, SiO, 14.56, 18.86, O = F:4.88,5.37, HrO (bydifference) 2.10, 3.06 wt0/0, correspondingto(Y, REE)4A(SiO4)r(OH),F5. Some of the crystals are zoned, withY content increasing outward. Individual crystals are up to 0.5mm in maximum dimension.

Single-crystal X-ray study showed the mineral to be triclinic,space group Pl-Cl, a: 8.606(6), b : 8.672(8), c : 4.317Q) A,a: 102.79(6), P :97.94(5),1 : 116.66(6)' ,2: L.The strongestX- ray l ines (80 g iven) a re 3 .710(90) (200) , 3 .490(90X111) ,2.7 93(100, broad)(3 I 0,2 I 0), 2.459(80, broad)(300), 1.702(80)(141). The n spectrum has absorbance maximaat3445 and3420cm-' related to OH groups. The mineral is colorless, transparent.Streak white. No fluorescence; yellow-green cathodolumines-cence. Weak {0I0} cleavage,H:4-5. D^.

":4.3(5), D*t":4.26.

Macroscopically identical with thalenite. Biaxial negative with2 V ^ , : l 9 ( l ) , 2 V * t " : 2 9 o , r > v , a : 1 . 6 5 6 ( l ) , B : 1 . 7 0 0 ( 1 ) ,r : 1 . 7 0 3 ( 1 ) ( 5 8 9 n m ) , X n a : 7 " , Y A b : 2 8 , 2 : c .

Kuliokite-QQ occurs in amazonite pegmatites as inclusions inviolet fluorite or as platy crystals in fissures in fluorite and quartz.Associated minerals are thalenite, xenotime, kainosite, and bast-niisite. The name is for the Kuliok River, Kola Peninsula. Typematerial is at the A. E. Fersman Mineralogical Museum, Aka-demiya Nauk SSSR (Moscow), and at the Mining Museum ofthe Leningrad Mining Institute (Leningrad). J.P.

Kuzminitet

V.I. Vasilev, Yu.G. Lavrentev, N.A. Palchik (1986) KuzminiteHgr(Br,Cl)r-A new natural mercury halide. Zapiski Vses. Mi-neralog. Obshch., 1 15, 595-598 (in Russian).

Microprobe analyses (average of four) gave H977.00, Br 16.60,Cl 5.66, total99.26 wt0/0, corresponding to Hgrou(Br,rrClorr)r"o.The similarity of the X-ray powder pattern of kuzminite to thoseof calomel and synthetic HgrBr, indicates tetragonal symmetry,space group /4 /mmm, a: 4.597(5),c : 11.034(8) A. The stron-gest X-ray lines (17 given) are 4.26(50-60X101), 3.25(100X1 l0),2.76(40)(004),2.103(50Xl l4). The mineral is similar to calomel:colorless, bluish gray or dull white, sometimes with weak browntint. Powder aggregates are yellowish or creamy white. Good{100} cleavage; uneven fracture. H = 2; microhardness (20-gload) 25 kg/mm2 (average of I 5 ranging from 2I to 29 kg/mm'z).Density was not measured. Soluble in warm HCl, readily solublein aqua regia, darkens in KOH. In transmitted light the mineralis indistinguishable from calomel: transparent, anisotropic, uni-axial positive, refractive index >2.00, strong double refraction,slight pleochroism from light yellow to very pale brown. In re-flected light, strong bireflectance: R, ffa!, Rz grayish white. R,lower than Rr, similar to those of eglestonite. Yellowish gray,grayish brown, and bluish gray anisotropic effects. Internal re-flection colorless or weak yellow.

The mineral occurs in the Kadyrel mercury ore deposit (TUVAASSR, southern Siberia). It forms 0.3-0.5 mm irregular to elon-gate grains; aggregates up to 2.0 mm and powdery masses occurin calcite veins and are associated with eglestonite, lavrentevite,calomel, native Hg, corderoite, cinnabar, and iron hydroxides.

The name is for Russian mineralogist A. M. Kuzmin. Typematerial is at the Central Siberian Geological Museum (Instituteof Geology and Geophysics of Siberian Division of Soviet Acad-emy of Sciences, Novosibirsk, USSR). J.P.

Luanheite*

Shao Dianxin, ZhouJianxiong, ZhangJianhong, Bao Daxi (1984)Luanheite-A new mineral. Acta Mineral. Sinica, 4, 97-l0l(in Chinese, English abstract).

Electron-microprobe analyses of five compositionally homo-geneous grains gave an average and (range) of Hg 37.9 (35.55-39.72), A962.4 (59.47-63.84), Fe 0.00 (0.0G{.02), Co 0.05 (0.02-0.07), Ni 0.00 (0.00-0.01), Cu 0.01 (0.00-0.02), Te 0.10 (0.06-0.15), sum 100.46 (99.01-100.26) wt0/0. The empirical formulavaries from AgrorHgo' to AgrruHg, on, ideally AgrHg. The min-eral occurs as irregular spherical aggregates,0.l to 0.6 mm indiameter, each having an uneven surface and a thin, black oxi-dized coating. The spheres consist ofgranular to tabular grains,up to l0 pm long, with a metallic luster, black streak, and H :-2.5 (VHN a4-75); D^.,": 12.5 g/cm3; malleable. In reflectedlight, milky white with slight reflection pleochroism from pinkishparallel to the elongation to milky white normal to it; anisotrop-ism very weak. Maximum and minimum reflectance values ob-tained from three grains measured at two wavelengths in air (WCstandard) are 546, 64.2-7 0.5; 589, 64.9-7 4.

The strongest lines ofthe X-ray powder pattern (Fe radiation,57.3 mm camera) are 2. 830(70, 1 1 2), 2.000(60X21 2), 1.49 5(100)(223), r.20 4(9 0)(307), r. | 3 4(7 0X50 r ), I . I 0 5 (60X3 30), I . 0 I 0(60)(512). Cell dimensions calculated from the powder pattern arehexagonal, a : 6.61,c : 10.98 A;Z : 6.

Luanheite occurs in a gold placer in Hebei Province, China,

NEW MINERALNAMES

5.436(30), 3.676(50),3.1 l8(40), 1.820(50), 1.552(40) A. Because

of problems of low symmetry (not higher than monoclinic), theresults could not be indexed with the Ito method. The pattern

deteriorates into a confusing blur ofvery faint lines at low values.Ifthe mineral is ground prior to study, additional lines appearin the pattern. Mendozavilite is not a molybdate, but is a com-pound of a heteropolyacid P-Mo radical.

The mineral occurs in the bright yellow oxide zone of the

Cumobabi molybdenum pegmatite deposit southwest of Cum-pas, Sonora, Mexico. The mineral occurs chiefly on quartz andis associated with a great number of secondary nrolybdenumminerals, among them paramendozavilite. The mineral forms

abundant masses in this zone. Crystals average 20 pm and arewell formed.

Mendozavilite is Empire yellow, inclining to orange (RHS I 1A

to 14A), with a bright yellow streak and vitreous luster. H : 1.5,

D-""" : 3.85. No fluorescence. The mineral is readily soluble in

all common acids (HCl, HNO3, HrSOo), even in dilute form atroom temperature. Its optical properties are biaxial positive with

a : 1.762, A : | .763,1 : 1.766 and 2E^,", = 5-15'; extremelystrong dispersion / > v, pleochroic in pale yellow with Z > Y >

X In thin section, mendozavilite resembles beudantite. The op-tics indicate low symmetry.

The name is derived from the Phelps Dodge geologist H. Men-

doza Avila who found the first specimen. Type material is at theBritish Museum of Natural History in London. E.A.J.B.

Moydite*

J.D. Grice, J. vanVelthuizen, P.J. Dunn, D.E. Newbury, E'S. Etz,c.H. Nielsen (1986) Moydite (Y,REE)[B (OH)"](CO,), a newmineral species from the Evans-Lou pegmatite, Quebec. Can.Mineral.. 24.665-673.

Averaged microprobe analysis gave YrO. 35.0, CaO 0.5, CerO,

0.8, NdrO3 1.3, Sm'O, 1.2, GdrO3 3.4,Dy,O' 3.8, HorO, 1.9,

B2O3 14.4, COz 17.7, HrO 20.0 (by difference), sum 100.0wto/0, corresponding to (Yo ro Cao orCeo o, Ndo or Smo o, Gdo ooDyo oo-Hooor)"03r[BoroO4Hoes](CoEoOr) on the basis of O : 7 or, ideally'(Y,REE) [B(OH)"XCO3) and Z: 8. This theoretical formula is

the result of the integration of electron-microprobe, crystal-struc-ture, secondary-ion mass spectrometry, and Raman microprobeanalyses.

X-ray single-crystal precession study shows that the mineral is

orthorhombic, space group Pbcawith a : 9.080(9), b: 12.222(9), c: 8.91l(6; A. A.*" (treavy l iquids): 3.13(3), D*k: 3.01(8).The strongest X-ray powder lines (30 given) are 6.1 1(10X020),4. 5 0(9)(002,200), 3 . | 7 9 (7 )(202), 3. 0 5 4 ( 3X04 0), 2.8 | 8 (s)(222),

2.7 4e (3)(3 1 t, | 4 r, | | 3), 2. 5 2 5 (4)(O 42,2 40), 2.203 (3)(242),

2.09 r(3)(34r,3r3,r 52,r 43), and 1.855(3X062,260).

Mendozavilite* Moydite occurs as a rare secondary mineral in cavities within

S.A.williams(re86)Mendozav'iteandparam"ndo,TlLry;l:: [1'il;'J,'ilX,1lliJ,?llli"il'#i,li;13'"3ftitff"Ij:x3:new minerals from Cumobabi, Sonora. Boletin de Mmeralogia *-'. '--, "- .

- -

(Soc. Mexicana Mineral.), 2, r3_rg. sociated minerals are henandite, kainosite, lokkaite, xenotime,

and fergusonite. The mineral occurs as platy aggxegates, often

Wet-chemical analyses of 1407 pg (for Fe, P, Ca, Al, Na, Mg, with subparallel growth. Individual crystals are clear yellow with

Mo, Cl) and again of 3097 pg (for Fe and P) gave FerO. 14.31, vitreous luster and have dimensions up to I x I x 0'05 mm

Al2Oj O.'16, CiO Z.CA, NarO 1.25, MgO 0.35, P,O, 6.78, MoO, thick; dominant forms are {010} and { I 1l }, with minor devel-

5O-.4i,ClO.26,HZO 21.62, less O = Cl 0.06, sum 98.22w{/0, opment of {100} and {001}. Moydite is soft, brittle, exhibits

corresponding to a proposed idealized formula Na(Ca,Mg)r- conchoidal fracture, has a good cleavage on {010} and a poor

peupb.;rpnto,,OrnioH,Cl)rol.33Hro. cleavage on {101}, is nonfluorescent, and is not readily soluble-

ifr. rtritrg"rrX-iay diffraction lines (19 listed) obtained with in 300/o HCl. Opticallybiaxial negative, a: 1.588(2), B: 1.681(l),

a l t4-mm Gandolf i camera are 11.56(30), 9.46(80), 8.77(100), ,y: 1.690(1), 2V^"".:32(3)" and 2V.^":34'. The optical ori-

r93

and was named after its locality, a river. Associated minerals arenative gold, lead,zinc, and mercurian silver. Luanheite has beenfound intergrown with mercurian silver and with silicates. Typematerial is preserved at the National Geological Museum, theChinese Academy of Geological Sciences, Beijing, China. J.L.J.

Mannarditet

J.D. Scott, G.R. Peatf ield (1986) Mannardite [Ba'HrOXTi6Vl+)O16, 4 n€w species, and new data on redledgeite.Can. Mineral.. 24. 55-66.

Electron-microprobe analysis using BaSOo (Ba), V,O5 (V), TiO,(Ti), chromite (Cr,Fe?) of l5 spots on 5 grains (and srr"rs analysisfor HrO) gives an average analysis of BaO 19.5, TiO, 59.0, VrO315.4, Cr,O, 2.6,Fe,Or 0.7, HrO 2.1, sum 99.3 wto/a, which onan anhydrous basis of 16 O results in [BA'or (H'O)or']-(Ti, rrVl juCro rrFe3Sr)O,u.

Powder and precession X-ray studies show the mineral to betetragonal, space group 14 ,/a, a: 14.356@), c: 5.9ll!) L,Z:4. The strongest diffraction-maxima in the powder pattern (30given) are 3. 20 I ( I 00X4 2 0), 2.47 3(7 o)(3 | 2), 2.224(50)(332),1.887(70X352), 1.690(50X660), 1.586(80X732) using Fe-filteredCoKa radiation.

Mannardite's properties are similar to ilmenite's: jet-black,

adamantine luster, white streak. In reflected light, opaque withno observable internal reflection; pale reddish brown with lightto dark brown bireflectance, strongly anisotropic from light pink-ish gray (RJ to dark brownish gray (R"). Selected average reflec-tance values are [nm, air (R.,R"), oil (R.,RJ]: 470(15.6,16.8)(4.2,5.0), 550(l 5. l , l 7.4) (4.0,5.6), 5e0 ( l 5. I , I 8.0) (4. 1,6.0), 650(15.2,18.5)(4.1,6.3) (given every l0 nm). Indices of refractioncalculated from the reflectance data are a: 2.26(l), e: 2.42(l).

Mannardite crystals are up to 5 mm in length, are elongate andstriated parallel to c, and show prominent {100} cleavage anduneven to subconchoidal fracture. H: 7, D^*": 4.12, Da,:4.28 g1cm3.

Mannardite is associated with qvafiz, barytocalcite, norsethite,barite, and sulvanite in quartz-carbonate veins that cut a De-vonian shale and siltstone sequence on the Rough Claims, northof Sifton Pass, northern British Columbia, Canada. Mannarditealso has been found at the Brunswick no. 12 orebody, Bathurst,New Brunswick, Canada.

Mannardite is related to redledgeite, both of which are mem-bers of the cryptomelane group. It is named for the late Dr. G.W. Mannard, president of Kidd Creek Mines Ltd. Type materialis at the Royal Ontario Museum, Toronto, Cartada, and at theBritish Museum (Natural History). T.S.E.

194 NEW MINERAL NAMES

entation is X ll b, Y ll a, and, Z ll c. The mineral is colorless inthin fragments and shows neither pleochroism nor absorptionbut has weak dispersion, r > v.

The name is for Mr. Louis Moyd, Curator Emeritus at theNational Museum of National Sciences, Ottawa. Type materialconsists ofseveral single crystals in the collections ofthe NationalMuseum of Natural Sciences, Ottawa, Ontario, Canada (NMNS5077 l), and the Smithsonian Institution (162936). A cotype spec-imen has approximately 15-mm-sized crystals on a quartz matrix(NMNS 50772). A.C.R.

Parabariomicrolite*

T.S. Ercit, F.C. Hawthorne, P. Cernj'(1986) Parabariomicrolite,a new species, and its structural relationship to the pyrochloregroup. Can. Mineral., 24,655-663.

Electron-microprobe analysis (Brazilian material) gave NarO0.4, K,O 0.3, SrO 0.8, BaO 10.5, PbO 0.4, Nb,O5 1.5, Ta,O,80.6, sum : 94.5 vrto/o; crystal-structure arguments indicate 5.2wto/o HrO, to give a sum of 99.7 wto/o. The ideal chemical formulais BaTaoO,o(OH),.2HrO withZ: 3.

The mineral is rhombohedral, space grotp R3m with a :7.4290(6) and c : 18.505(2) A. The strongest lines of rhe X-raypowder pattern (37 given) are 6.18(50X003), 3.172(65)(021),3 .085(41X006) , 3 .040(100) (202) , 2 .64r (50) (024) and|.591(42)(226). The crystal structure was solved by crystal-chem-ical arguments, augmented by the X-ray powder-diffraction data,and is a layer structure derived from that ofpyrochlore.

Parabariomicrolite is translucent, white to pale pink, with awhite streak and a vitreous to pearly luster. H : 4, D*rc: 5.97.The mineral is nonfluorescent and brittle and has well developed{001 } and { 101 } cleavages. Optically anisotropic with all indicesofrefraction greater than 2.0. Individual crystals range from 0.01to 0.1 mm in size.

Parabariomicrolite occurs as topotaxic replacements of mi-crolite, and more rarely as open-space fillings, in oxide-mineralassemblages of the Alto do Giz pegmatite, Rio Grande do Norte,Brazil. Associated minerals include simpsonite, tantalite, man-ganotantalite, tapiolite, natrotantite, alumotantite, stibiotanta-lite, beryl, spodumene, and petalite. A second occurrence is notedfrom near Lake Kivu, Zaire.

The name is in allusion to its chemical similarity with bario-microlite. Type material is housed in the collections of the RoyalOntario Museum, Toronto, Ontario, Canada (M22607), and theSmithsonian Institution, Washington ( 104739). A.C.R.

Paramendozavilite*

S.A. Williams (1986) Mendozavilite and paramendozavilite, twonew minerals from Cumobabi, Sonora. Boletin de Mineralogia(Soc. Mexicana Mineral.), 2, 13-19.

Wet-chemical analyses of 1054 pg (for Fe, P, Ca, Mg, Mo, Na,Al, Cl) and again of 2636 pg (for Fe and P) gave FerO, 13.36,AlrO3 4.65, CaO 0.59, Na,O 0.54, MgO 0.16, P,O, 10.32, MoO,42.01,Cl0.65, HrO 28.05, less O = Cl 0.15, sum 100.18 wt0/0,corresponding to a proposed idealized formula NaAlo[FedPO.)r-(PMo,rO..)(OH)r61. 56H,O.

The strongest X-ray ditrraction lines (24 given) are I 4.36(1 00),12.90(40), 10.18(60), 9.48(100), 7.98(50), 7.38(70), 6.56(50) A.Because of problems of low symmetry (not higher than rnono-clinic), the results could not be indexed with the Ito method. The

pattern (obtained with a 114-mm Gandolfi camera) deterioratesinto a confusing blur of very faint lines at low values. If themineral is ground prior to study, additional lines appear in thepattern. Paramendozavilite is not a molybdate, but is a com-pound of a heteropolyacid P-Mo radical.

The mineral occurs in the bright yellow oxide zone of theCumobabi molybdenum pegmatite deposit southwest of Cum-pas, Sonora, Mexico. The mineral occurs only in biotite-richpegmatite gangue and is associated with a great number of sec-ondary molybdenum minerals, among them mendozavilite. Themineral forms abundant masses in this zone. Prismatic crystalshave one perfect cleavage and polysynthetic twinning parallel tothe cleavage plane.

Paramendozavilite is pale yellow (Aureolin RHS 12C) u/ith avery pale yellow streak and vitreous luster. H: 1, D-."" = 3.35.The mineral is soluble in all common acids (HCl, HNO3, HrSOo),even in dilute form at room temperature. Its optical propertiesare biaxial negative with a : 1.686, B : 1.710, t : 1.720 and2E^.

":60o; extinction oblique to cleavage and twinning planes.

The name is derived from the similarity of the mineral tomendozavilite. Type material is at the British Museum ofNaturalHistory in London. E.A.J.B.

Rhodizite

A. Pring, V.K. Din, D.A. Jeferson, J.M. Thomas (1986) Thecrystal chemistry of rhodizite: A re-examination. Mineral. Mag.,50, 163-172.

The material from Ambatofinandrahana, Ankarata Moun-tains, Madagascar (lat 20'33'5, long 46"49'E) has the formula(IG ouCso,uRbo ouNa" or)ro roAl, ,rBeo(B,, ,rBeo ,rl-io or)O* and rep-resents the K analogue of rhodizite, ideally (Cs,K)A1oBe.-(B,Be),rO*. [Note: The formula given in Fleischer's Glossary ofMineral Species, Fifth Edition (1986) with (Ca,K)AtBeo@,Be),,-O,u is incorrect.l The mineral is cubic with a : 7.318(l) A andhas the space grotp P43m.

Discussion. Pertinent data should be sent to the Commissionon New Minerals and Mineral Names. IMA. for accreditation asa new mineral species. A,C.R.

Simonkolleite*

K. Schmetzer, G. Schnorrer-Kiihler, O. Medenbach (1985) Wiil-fingite, e-Zn(OH),, and simonkolleite, Zn5(OH)EC1,'HrO, twonew minerals from Richelsdorf. Hesse. F.R.G. Neues Jahrb.Mineral. Mon., 1985, 145-54.

Electron-microprobe analysis (for Zn, Fe, and Cl) and wet-chemical analysis (for HrO) gave ZnO 73. 63, FeO 1.25, Cl | 1.7 3,H,O 16.2I,less O = Ct2.65, sum 100.17 wt0/0. The presence ofwater was established by infrared spectroscopy. The results arein agreement with the ideal formula Znr(OH)rClr'HrO.

The strongest X-ray diffraction lines (27 listed) obtained witha 114.6-mm Debye-Scher rer camera are 7 .87(100) (003) ,5 .33(30X1 0 r ) , 4 .0 1 (30X1 04) , 3 . s8(40X1 05) , 3 . l 6 (40X1 I 0 ) ,2.7 2s(50)(20 1), 2.67 2(60)(202), 2.37 2(40)(205). SyntheticZnr(OH)rClr.HrO is hexagonal, space group R3rn. The refinedunit-cell dimensions of the natural material are a : 6.334(2), c :

23 .5S( l ) 4 , , V : A1 .9 .qe A" Z : 3 . D*n :3 .35 , D. * : 3 .20(5)ilcm'.

Simonkolleite is natural zinc hydrochloride II. The mineraloccurs as a natural weathering product ofZn-bearing slags in an

NEW MINERAL NAMES 195

old slag-heap of the Richelsdorf foundry, Hesse, F.R.G. Asso-ciated phases are zinc (most probably not of natural origin) andthe following natural weathering products: wiilfingite, hydroce-russite, diaboleite, zincite, and hydrozincite. Simonkolleite formstabular to lamellar hexagonal crystals up to I mm in diameter.Perfect cleavage parallel to (0001); no fracture observed. Themineral is colorless, transparent to translucent, with a white streakand vitreous luster. H is about lVz. Soluble in dilute acids. Si-monkolleite is uniaxial positive with <u: 1.657(l), € : 1.700(l).

The name is in honor of the mineral collectors Werner Simonand Kurt Kolle, both of Cornberg near Michelsdorf, who sub-mitted the samples for investigation. Type material is preservedin the mineralogical collections of the Universities of Gtittingenand Heidelberg. E.A.J.B.

Stronalsite*

H. Hori, I. Nakai, K. Nagashima, S. Matsubara, A. Kato (1987)Stronalsite, SrNarAloSioO,u-A new mineral from Rendai, Ko-chi City, Japan. Mineral. Jour. (Japan), 13, 368-375.

The average offive microprobe analyses gave SiOr 39.13, AlrO332.70, CaO 0.17, SrO 15.72,BaO 2.29, Na,O 9.99, sum 99.91wt0/0, corresponding to (Sro r. Bao on Cao or) r, o, Nar ee Al3 e5 Si4 or O 16based on O : 16. Color and streak white, luster vitreous, nocleavage, not fluorescent in long- or short-wave ultraviolet light,H : 6Vz, D-*" : 2.95, D,k: 2.95 E/cm3 from the empiricalformula with Z : 4. Optically colorless in thin section, biaxialposit ive, a : 1.563(2), 0" k: 1.564, t : 1.574(2), 2V^.

": 32't

a : Y, b : Z, c : X. X-ray single-crystal study indicated or-thorhombic symmetry, space group lbam or lba2, a:8.415(4),b : 9.901(4), c : 16.729(9) A. Strongest lines of the powderpat te rn (68 l i s ted) a re 4 .179(38X200) , 3 .765(40) (211) ,3. s 02(80x 1 r 4), 3.20 4(tOO)(220), 3. I 8 3(s0X024), 3.06e(40X I 30),2,992(40)(222), 2.88 l (70X1 32), 2.632(3s)(t25), 2.067(50X332).

Stronalsite occurs as veinlets in a basic metatuffxenolith en-closed in serpentinite at Rendai, Kochi City, Japan, and in ser-pentinite at Mount Ohsa, Okayama Prefecture, Japan. Stronalsiteis the Sr analogue of banalsite and is named for the composition.Type material is preserved at the Department of Geology, Na-tional Science Museum, Tokyo.

Discussion. A separate description of stronalsite was reviewedin Am. Mineral., 72, 222-230; because of the incompleteness ofthe data, the review incorporated information from the originalIMA submission. This new review summarizes the definitivedescription of the mineral and also is intended to re-afrm thatIMA submissions are to be treated, without exception, as con-fidential information. J.L.J.

Sturmanite*

D.R. Peacor, P.J. Dunn, M. D,rggan (1983) Sturmanite, a ferriciron, boron analogue of ettringite. Can. Mineral., 2l ,705-709.

Chemical analyses gave CaO 25.6, FerO, 8.84, AlrO3 1.13,MnO 1.30,82033.2, SO3 14.2, }{zO 46.7, sum 101.0 wt0/0, cor-responding (on the basis of Ca : 6) to Ca'o (FeflAlo rMnf,r'?)", o-(SO")r r(B(OH)4)r ,(OH)rr 0 25.7HtO. This is the Fe*3 and B an-alogue of ettringite, Ca6Al, (SOo), (OH),r'26 HrO. The mineralis soluble in cold 3N HCl.

X-ray studies show that the mineral is hexagonal, probablespace group P3 lc (by analogy with ettringite) , a : ll.16(3), c :

2I.79(9) L,Z: Z; possesses a pronounced subcell with a' : a,

and c' : c/2 arrd shows diffraction characteristics compatiblewith pseudo-space groups P63l mmc, P-62c and P6rmc''fhese arc

consistent with sturmanite being isostructural w'ith ettringite. The

strongest X-ray powder lines (25 given) are 9.67(100X100),5. 5 8(70X 1 I 0), 3.89(70X I r4), 2.7 7 4(50)(30 4), 2.582(60X2 I 6),

2.2t5(50)(226,320).Fresh, unaltered sturmanite is bright yellow, transparent, and

occurs as euhedral hexagonal dipyramidal crystals, not exceeding

2 mm in size, that are tabular on {0001} with a width to height

ratio of approximately 3:1. The dominant form is {1014} with

subordinate {1124}. The mineral has one perfect cleavage, par-

allel to { I 0 I 0}, is brittle, possesses a light yellow streak' a vitreous

luster on cleavage surfaces and a vitreous to slightly greasy luster

on fracture surfaces. Mohs'hardness:2t/z- D-*, (heavy liquids

and pycnometer) : 1.847, D-" (based on 25 HrO and the unit-

cell parameters) : 1.855. Sturmanite exhibits neither fluores-

cence nor cathodoluminescence. Optically uniaxial positive, <,r :

1.500, r : 1.505, weakly dichroic with O : pale green and E :

pale yellowish green. Absorption E > O.Sturmanite occurs at the Black Rock mine, Kuruman district,

Republic of South Africa, encrusting hematite and barite. It is

named for B. Darko Sturman of the Department of Mineralogy

and Geology, Royal Ontario Museum, Toronto, Ontario, Can-

ada. Holotype material is preserved at the Smithsonian Institu-

t ion (148261). A.C.R.

Tengchongite*

Chen Zhangru, Luo Keding, Tan Falan, ZhangYi, Gu Xiaofa(1986) Tengchongite, a new mineral ofhydratedcalcium uranylmolybdate. Kexue Tongbao, 31, 396-401.

Wet-chemical analysis gave UO, 74.30, MoO, 11.46, CaO

2.19, Na,O 0.07, K,O 0.09, MgO 0.02, MnO 0.02, Al,O3 0.66'Fe,O,0.12, TiOr 0.07, ThO,0.12, SiO, 1.04, P,Os 0.28, HrO

9.00. sum 99.44 wto/o; this was recalculated to UO, 76.64, MoO,

I1.82, CaO 2.26,H,O 9.28, sum 100.00 wt0/0, corresponding to

an ideal formula CaO'6UOr'2MoO3 12HrO. Electron-micro-probe X-ray images show the mineral to be homogeneous. In-

frared spectroscopy shows the major uranyl band at 920 cm-t,

the molybdate band at 780 cm-r, and water bands at 3430 and

1640 cm ', but fails to show any OH bands.SingJe-crystal studies with different methods show the mineral

to be orthorhombic, space grotp A2,22, with a : 15.616(4)' b :

13.043(6), c : 17.716(14) A, / : roos A" z: 4, D^.: 4.24,D^.

": 4.25(2) g/cm'. The strongest X-ray diffiaction lines (26

l isted) obtained with a 114.6-mm Gandolf i camera are

8. 84( r 00x002), 7.66(30x I 02), 5. 37(50X0 r3), 4.27 (50)(rO4),

3.65(40X024,411), 3.38(70X304,420), 3.17(80X413), 204-(40x308).

Tengchongite is a calcium uranium molybdate. The only othercomparable mineral is calcurmolite, which has a UO.:MoO, ratio

of 1:1, whereas in tengchongite it is 3:1. The mineral occurs in

the oxide zorre of a uranium mineralization on the contacts be-

tween an ocular migmatite and a migmatitic gneiss in TengchongCounty, Yunnan Province, China. Tengchongite occurs closely

associated with studtite, calcurmolite, and kivuite. The mineral

forms irregular grains (size not given), tabular parallel to {00 I }'with a perfect {001} cleavage.

Tengchongite is transparent to translucent, yellow with a wit-

reous luster. H :2-2V2. No fluorescence. The mineral is insolublein 2090 KOH, slowly soluble in 0.lNHCl, fairly soluble in HNOt

and HrSOo. In thin section, tengchongite is yellow; no pleochro-

t96 NEW MINERALNAMES

ism observed on the cleavage plane (001). Its optical propertiesare biaxial negative, d: 1.663(2), P : 1.760(2), t : 1.762(2)and 2V^"

": 16,2V."t : 16; X : c. DTA data show two endo-

thermic peaks at 83 .C (dehydration) and 853 "C (fusion), andan exothermic peak at 574 .C (formation of UrOr). On heatingto 618 "C, the mineral becomes brown, the luster fades, and thetransparency disappears.

The name is for the locality. Type material is at the UraniumGeology Research Institute in Beijing. E.A.J.B.

Tokkoite*

K.A. Lazebnik, L.V. Nikishova, Yu.D. Lazebnik (1986) Tok-koite-A new mineral of charoitites. Mineralog. Zhurnal, 8 (3),85-89 (in Russian).

Analyses by classical wet-chemical (and in parentheses, averageof two microprobe) analyses gave SiO, 55.65 (54.17), TiO, 1.42(1.18), Fe,O, 1.58 (1.57), MnO 0.70 (0.5a), MgO 0.30 (0.98),CaO 25.10 (24.15), Na,O 0.60 (0.41), K,O 11.33 (12.95), H,O2.40, F 1.50, sums 99.95, (99.22) wt0/0, corrected for F = Oand corresponding to (K, r, Nao,r)r, oo (Ca, o, Mgo ou Mrr6 6s F€6 15-Ti. ,3)23 8rsi7 r3Or7(Or 63OHr 'rFo u,)- ru and (K, orNao ,r)"r rr(Ca. ,r-Mgo,n Mnoou Feo,, Tio,,)rr* Siu* O,, (O, rnOHro, Fou,)"00, orKrCaoSirO,r(O,OH,Do. Spectral analyses gave Sr (to 0.Io/o); Zr,Nb (0.0-folo); Be, Cu, V, Ag, Y, and Yb (0.001o/o); Ba absent. TheDrA curve shows an endothermic peak at 920 "C. The infraredspectrum shows a wide absorption band between 1080 and 800cm r, with maxima at 920,970,1020. and 1080 cm-t attributedto I"Si-O, and bands at 1595 and 3450 cm-Iattributed to hy-droxyl.

It is not possible to isolate a single crystal for X-ray study.Electron-diffraction studies suggest that the mineral is triclinicwith c sin P :7.13 A and a sin B : 1.02 A. By indexing theX-ray powder pattern, the following triclinic cell was calculated:a: 10.37(3), b : 25.39(5), c : 7.27(t) A, a: 9t.67(l f , B:100.66(lf, t : 92.09(l). The strongest lines (56 given) are3 .34(55X3r0 .041) . 3 .32(85X260.132) , 3 .15( l00x l42 . l l2 ) ,3.125(85)(26 r,r22), 3.07 5(62)(11 r,267), and 3.044 (broad)-(e 1x340).

The mineral occurs in zones a few centimeters thick or instreaky, elongated, nearly monomineralic segregations in thesouthern part of the Murun alkaline massif (S. W. Yakutiya,between the Charo and Tokko Rivers). The mineral is intimatelyintergrown with charoite, tinaksite, and miserite, which are pres-ent in minor amounts in the segregations, as are aegirine andK-feldspar.

The mineral forms radiating or columnar aggregates. Color inlarge masses light brown; in isolated prisms, pale yellow; in trans-mitted light, colorless; luster vitreous, fracture splintery, cleav-ages very perfect {0 I 0}, perfect { I I 0}. H : 4-5, D ̂ ."" : 2.7 6(l)(hydrostatic suspension), D."t": 2.77 g/cm3 for Z: 4. Opticallybiaxial posit ive, a: 1.570(2), t : 1.577(2), 2rl : 38.(5). weakdispersion ofthe optic axes r < v. Z t, c: 0. to 15..

The name is for the Tokko River. Type material was given tothe mineralogical museum of the Institute of Geology and Geo-physics, Siberian Division, Academy of Sciences of the USSR,Novosibirsk.

Discussion. Available X-ray and electron-difraction data arenot sufrcient to determine unequivocally the cell size and sym-metry. The authors note that in the course of approving themineral, the IMA commission proposed alternative formulae:K.CarSiuO,'(OH,F), requiring Z : 5, andK"CarSi,oOro(O,OH,F)uwith Z : 2, but the latter gave a calculated density of 2.63, in

poor agreement with the measured valte,2.76 g/cm3. Becauseofthe uncertainty in the cell size, the formula proposed by theauthors is moot. E.S.G.

Weishanite*

Li Yuheng, Ouyang Shan, Tian Peixue (1984) Weishanire-Anew gold-bearing mineral. Acta Mineral. Sinica, 4, 102-105(in Chinese, English abstract).

Electron-microprobe analysis gave Au 56.91, Hg 39.92, Ag3.17, sum 100.00 wt0/0, corresponding to (Auo *rAg orr). r,rH& ,rr,ideally (Au,Ag),Hgr. The mineral occurs as pale yellow aggre-gates, 0.05 to 0.4 mm, in which individual grains vary fromseveral micrometers to a maximum of 30 pm. Au, Ag, and Hgare distributed uniformly. Luster metallic; ductile and malleable;H : 50.5 kglmm'z(Mohs' : 2.4); D*": 18.17 g/cm3.In reflectedlight, light yellow with weak reflection pleochroism and anisot-ropism. Reflectance in air (WC standaro: 480(63.75), 534(76.30),589(81.03), 656(68.6). A hexagonal cel l ofa : 2.9265, c:4.8178A was calculated from the X-ray powder pattern (Cu radiation,57.3-mm camera) by analogy with data for synthetic AurHg (PDF4-808); space group P6r/ mmc, Z : 2. Strongest lines of the X-raypat te rn a re 2 .243(100X101) , 1 .4609(60) ( l l0 ) , 1 .3593(80) -(103) , 1 .250e(80X1 12) , t .22s5(60) (201) , 0 .9954(70) (203) ,0.9396(90X21 l), 0.9293(60X1 l4), 0.8235(60X213).

Weishanite occurs in a silicified zone in the silver-rich part ofa gold-silver orebody in biotite granulite in the Poshan miningdistrict, Tongbai, Henan Province, China. Associated mineralsinclude pyrite, galena, sphalerite, pyrrhotite, scheelite, acanthite,native silver, and native gold. Type material is preserved at theNational Geological Museum, Beijing, China. J.L.J.

Wiilfingite*

K. Schmetzer, G. Schnorrer-K6hler, O. Medenbach (1985) Wiil-fingite, eZn(OH),, and simonkolleite, Zn,(OH),CI,'H,O, twonew minerals from Richelsdorf. Hesse. F.R.G. Neues Jahrb.Mineral. Mon., 145-l 54.

Electron-microprobe analysis (for Zn) and thermogravimetricanalysis (for H,O) gave ZnO 81.5, HrO 19.0, sum 100.5 wto/o;the results are in agreement with the ideal formula Zn(O}l)r.

The strongest X-ray diffraction lines (37 listed) obtained witha 114.6-mm Debye-Scher rer camera are 4 .407(100X110) ,4 .250(80X101,200) , 3 .280( l00x l I r ,2 t0 ) , 3 .212(80x201) ,2.7 27 (80)(2r r), 2.284(80)(O2L), 2. 2 1 5(80X3 I I ), 1. 5 29 5(80X203).Synthetic e-Zn(OH), is orthorhombic, space grotrp P2r2,2,. Therefined unit-cell dimensions of the natural material are a :

8 . 4 9 0 ( 1 ) , b : 5 . 1 6 2 ( t ) , c : 4 . 9 1 7 ( r ) A , v : 2 t s . 4 e A 3 , Z : 4 .D.",.: 3.06, D-"". : 3.05(2) g/cm3.

Wiilfingite is natural e-Zn(OH)r. The mineral occurs as a nat-ural weathering product of Zn-bearing slags in an old slag-heapof the Richelsdorf foundry, Hesse, F.R.G. Associated phases arezinc (most probably not ofnatural origin) and the following nat-ural weathering products: simonkolleite, hydrocerussite, diabo-leite, zincite, and hydrozincite. Wtilfingite occurs in very fine-grained incrustations of native zinc and zincite, or in small crys-tals up to 200 pm in size. The mineral is colorless to whitishwith a white streak and waxy luster. No cleavage; conchoidalfracture. H: 3. Soluble in dilute acids. In thin section, wiiLlfingiteis colorless and transparent. The optical constants were deter-mined with a microrefractometer spindle-stage: at 589 nm a :1.57 22(3) (not l . 527 7 as pintedtwice in the paper!), B : l. 5 7 8 I (3),

NEW MINERAL NAMES t9'7

1 : 1.5801(3) and 2Vx: 60" (meas. and calc.); 2V' data are alsogiven for nine other wave-lengths from 405 to 680 nm: the dis-persion of optical axes (2Vr) r >> v is extreme. Calculations ofthe Gladstone-Dale relationships lead to a compatibility index| - KJK- of 0, which shows the superior compatibility of alldata.

The name is in honor of Ernst Anton WiiLlfing (1860-1930),Professor of Mineralogy and Petrography at Heidelberg Univer-sity from 1908 to 1926. Type material is preserved in the min-eralogical collections of the Universities of Giittingen and Hei-delberg. E.A.J.B.

Unnamed Au-Pb

S.D. Voznesenskij, N.G. Zolotova (1986) Contemporary min-eral-forming processes in a gold placer. Zapiski Vses. Miner-alog. Obshch., ll5,301-310 (in Russian).

Microprobe analyses of an intermetallic Au-Pb mineral gaveAu 8.2-33.1, Pb 66.5-91.8, which may conespond to AuPb',AuPb., or their intergrowths with native gold. Weak peaks onthe X-ray powder pattern of impure material, dominated by na-tive gold and lead, correspond to those ofAuPbr or AuPbr.

The mineral occurs in an alluvial gold deposit in the north-eastern part ofthe USSR as segregations up to 12 mm, as a cementamong grains of gold, pyrite, ilmenite, etc., or as coatings on goldgrains. J.P.

Unnamed solid solutions of Ir-Os-Ru with Fe

A.G. Mochalov, G.G. Dmitrenko, I.V. Zhernovskii, N.S. Ru-dashevskii ( I 985) New iridium-osmium-ruthenium type (solidsolutions of rare platinum-group elements with iron) of plat-inum-group mineralization in chromium spinel-group min-erals of alpine-type ultramafic rocks of the Koryak Highland.Zapiski Vses. Mineralog. Obshch., ll4, 544-554 (in Russian).

Twenty-six analyses by electron microprobe are given for pre-viously unknown native solid solutions of Ir, Os, Ru, Rh, andPt in Fe, Ni, and Cu. The analyses are grouped into five suggestedisomorphous series: Fe-Ru, Ni-Ru, Fe-Os, Fe-Ir, Ni-Ir, and Fe-Rh-Ir. Each of these contains small amounts of several or all ofthe following: Cu, S, Pt, Pd, Co, As, Mg, Si, Al. Many of theanalyses have sums between 80 and 98 wt0/0, attributed either tounanalyzed light elements or to the presence of abundant mi-crofractures.

The compounds occur in discrete crystals and intergtownmasses, measuring 40 to 60 pm, but up to 200 pm in the chromitelayers of alpine-type ultramafic massifs in the Koryak Highlands.Associated minerals include laurite, osarsite, awaruite, oregonite,iridosmine, rutheniridosmine, osmiridium, tetraferroplatinum,isoferroplatinum, tulameenite, irarsite, native iridium and nativeplatinum. Crystals of the new compounds are combinations ofoctahedra, cubes, and pentagonal dodecahedra. In reflected light,the minerals vary from white (in Fe-rich examples) to light-grayand gray (in examples with microcracks). The Fe-Ru and Ni-Rugrains are markedly anisotropic, and the others are weakly an-isotropic to isotropic. D.A.V.

Unnamed TiP, unnamed FeTiSi,

E.J. Essene, D.C. Fisher (1986) Lightning strike fusion: Extremereduction and metal-silicate liquid immiscibility. Science, 234,I 89-l 93.

The phases occur with native metals and other intermetalliccompounds in spheroidal globules (with a diameter up to 100

r.rm) that unmixed from silicate glass in fulgurite masses 20 kmnorth of Ann Arbor near Winans Lake, Livingston County, Mich-igan, U.S.A. Temperatures in excess of 2000 K and reducingconditions approaching those ofthe SiOr-Si bufer were neededto form the coexisting metallic and silicate liquids. The authorsstress that earlier reports of similar compounds should not berejected a priori as requiring impossible geological conditions.

Unnamed TiP

Electron-microprobe analysis gave nearly stoichiometric TiP.The phase occurs as long laths intergrown with FerSi', FeSi andFeTiSir, or in intergrowths with FeSi and FerSi' encasing skeletalSi and < l-pm-sized blebs of Au.

Unnamed FeTiSi,

Electron-microprobe analysis gave Si 31.4,P 6.4, Ti 29.8, Fe33.3, Mn 0.4, sum 101.3 wt0/0, corresponding to (FerorMnor)-Tir53(Si454Pu?), or idealized FeTiSir. The phase occurs as longlaths intergrown with Fe3Si', FeSi, and TiP.

Discussion. Further studies are certainly needed. It is re$et-table that previously contested phases and similar new phases

are described with so few data (not even optical properties).

E.A,J.B.

Unnamed analogue of thalenite

A.V. Voloshin, Ya.A. Pakhomovsky, F.N. Tyusheva(1985) Kei-viite-(Y)-A new yttrian diorthosiliate, and thalenite fromamazonite pegmatites of the Kola Peninsula. Diortho- andtriorthosilicates of yttrium. Mineralog. Zhvnal, T (6), 79-94(in Russian).

Microprobe analysis gave YrO, 57 .92,YbrO3 I.24 EtrO, 2.42,Dy,O, 1.86, LurO,0.06, GdrO3 0.78, TmrOr 0.34, HotOr 0.70,Tb,O3 0.00, Sm'O, 0.47, CaO 0.27, SiO, 33.03, sum 99.10 wto/0.The X-ray pattern of the mineral differs slightly from that ofthalenite: a difraction line at 4.45 A cannot be indexed withthalenite parameters, and the strongliteat2.248 A, characteristicof thalenite, is not present. The mineral occurs between crystalsof keiviite-(Y) in amazonitic pegmatites of the Kola Peninsula.J.P,

Unnamed layer silicate

K. Wada, Y. Kakuto (1983) A new intergradient vermiculite-kaolin mineral in 2: I to l: I mineral transformation. M6m. Sci.G6ol. (Strasbourg, France), 7 3, 123-131.

A phyllosilicate with a d*, of 14 A, previously called a "chlo-ritized vermiculite," was studied by X-ray diffraction and in-frared spectroscopy in combination with dissolution by hot 0.33Msodium citrate and heating at 350 to 550'C. The results indicatethat the vermiculite does not contain aluminum hydroxide, butthat there is a partial transformation of layers in the vermiculitestructure into double kaolinite layers (which explains the presenceof 14-A reflections). If this transformation occurs in most layersof the vermiculite structure, it results in the formation of a newintergradient vermiculite-kaolinite mineral, which represents anintermediate stage of the 2:l to 1:l mineral transformation inlayer silicates.

The phase has been observed in several temperate red andvellow soils (ultisols and alfisols), and in soils derived from dif-

198 NEW MINERALNAMES

ferent parent materials. In this study the samples were taken fromsoils in Korea.

Discussion. A study by electron microscope is needed. E.A.J.B.

New Data

Calomel

V.I. Vasilev, Yu.G. Lavrentev, N.A. Palchik (1985) Brominecalomel-A new variety of natural HgrClr. Geologiya i Geo-fizika, 26 (l l), 56-61 (in Russian; English translation avail.able).

Calomel grains from the Kadyrel mercury ore deposit (TuvaASSR, southern Siberia) contain up to 14.5 wto/o Br so that theformula proportion of Cl:Br : l:1. Calomel and kuzminite (seeaccompanying abstract) form a solid-solution series HgrClr-HgrBrr,with Cl > Br in calomel, and Cl < Br in kuzminite. The nameBr-calomel is proposed for the mineral of composition Hgr(Cl,Br)r,Cl > Br.

Discussion. The new name Br-calomel is unnecessary for avariety of calomel. J.P.

Charoite

L.V. Nikishova, K.A. Lazebnik, Yu.D. Lazebnik (1985) Crystalchemical formula of charoite. Kristallokhim. Strukt. Tipo-morfizm Mineral., 1985, 100-104.

The chemical formula of charoite is given as(K,Na),(Ca,Ba,Sr)r(Si,rOro)(Si6O,6XOH,D nH,O with the unit-ce l l parameters a : 10 .7 , b : 32 .0 , c :7 .25 A, P : t tZ ; astructural similarity to miserite is suggested. F.C.H.

Ferrithorite

G.N. Nechelyustov, T.N. Shuriga (1986) "Ferrithorite" fromsubalkalic rare-metal metasomatites of eastern Siberia. Mi-neralog. Zhurnal, S (l), 88-94 (in Russian).

Ferrithorite from eastern Siberia was studied optically, chem-ically (by electron microprobe), and crystallographically (X-raypowder diffraction) to determine how Fe is incorporated. Chem-ical analyses show that the Si/(Th + U + Pb) ratio in ferrithoritesremains close to unity whatever the Fe content. In one varietyof the Siberian material, the Fe is enriched in submicroscopicveinlets and inclusions. The Fe is interpreted to be in the formof iron hydroxides, finely dispersed in thorite, vrith no evidenceofisomorphic Fe for Th substitution. The absence ofextra lineson X-ray powder patterns is attributed to the poor quality ofpatterns obtained on iron hydroxides in general. Thus, the easternSiberian ferrithorite is a mechanical mixture of thorite and ironhydroxide formed by secondary alteration of thorite. E.S.G.

Furongite

M. Deliens, P. Piret (1985) The uranium and aluminum phos-phates from Kobokobo: VIII. Furongite. Schweiz. Mineral.Petrogr. Mitt., 65, l-7 (in French).

Kobokobo, Kivu, Zaire, is the second world occurrence offurongite. Chemical, thermogravimetric, and crystallographic dataare given. Electron-microprobe and roa analysis gave AlrO, 9.38,

uor 49.61, P,O5 18.56, H,O 22.45, total 100.00 wto/0, corre-sponding to Al,,(UOr)r(POo),r(OH)ro' 58HrO or approximatelyAIr0JOrXPO"),(OH), 8HrO, which differs from the original de-scription. X-ray diffraction studies show the mineral to be tri-clinic, Pl or PI with a : 19.27 l(6), b : 14.17 3(4), c : 12.136(7)4,, a : 67.62(3), B : I 15.45(3), r : 94.58(3)" and V : 27s4(2)A'. A new cell orientation has been chosen with B and 7 obtuse.J.D.G.

Glushinskite*

P. Bayliss (1987) Mineral nomenclature: Glushinskite. Mineral.Mag., 51, 327-328.

Glushinskite, Mg(C,Oo) 2H,O, originally described inade-quately in 1960, is now known to occur at three localities andhas been approved as a mineral name. J.L.J.

Imogolite*

P. Bayliss ( I 9 8 7) Mineral nomenclature: Imogolite. Mineral. Mag.,5 t , 327 .

Imogolite has the ideal formula AlrSiO3(OH)4, and a two-di-mensional tabular structure with D : 5.1, c: 8.4 A. The X-raypowder pattern has strongest lines at 1 6(100,vb),7 .9(70),5.6(35),3.7(20),3.3(65,vb), and 2.25 A (zs,vt). The mineral now hasbeen accepted as distinct from allophane, the latter being almostamorphous and having the composition AlrOr'(SiOr),.r-ro'(HrO)rs_30. J.L.J,

Redledgeite

J.D. Scott, G.R. Peatf ield (1986) Mannardite [BaHrOl(Ti6V;*)Or6, a new species, and new data on redledgeite.Can. Mineral., 24, 55-66.

A reinvestigation of holotype redledgeite shows the correctformula to be [Ba, .,(H.OL,,](TiuCr?j,Vfr.fi,Fefl-f ,)O,u. Revisedunit-cell parameters ate a : 14.320(2), c : 5.893(l) A, spacegroup 14,/a. Redledgeite seems to be isostructural with man-nardite; however, additional, weak ditrraction-maxima in theprecession photographs of redledgeite suggest additional Ba-HrOorder in this mineral. T.S.E.

Rozenite*

P. Bayliss (1987) Mineral nomenclature: Rozenite. Mineral. Mag.,5 t , r 7 6 .

Rozenite, FeSOo .4HrO has been approved as a mineral distinctfrom siderotil, FeSOo' 5HrO. J.L.J.

ScaPolite*

P. Bayliss (1987) Mineral nomenclature: Scapolite. Mineral. Mag.,5 1 , 1 7 6 .

Scapolite is retained as a group name encompassing the mari-alite (NaoAlrSinOroCl)-meionite (CaoAluSi.OroCOr) series. Dipyreand mizzonite are regarded as varietal names; wernerite is syn-onymous with scapolite and is abolished. J.L.J.

NEW MINERALNAMES r99

Schniederite

H. Effenberger (1987) Crystal structure and chemical formula ofschmiederite, Pb,Cu,(OH)o(SeOr)(SeOo), with a comparison tolinarite, PbCu(OH),(SOn). Mineralogy and Petrology, 36, 3-12.

The crystal structure of schmiederite, a : 9 .922(3), b : 5.7 l2(2),c : 9.396(3) A, B : tOt.S0(3)" P2,/m, Z: 2 was refined to anR index of 5 . 80/o for 1 I 3 I reflections. The chemical formula provedto be PbrCudOH)"(SeOJ(SeOo), a mixed selenite-selenate min-eral, rather than PbCu(OH)r(SeOo) as had been suggested in pre-vious studies. F.C.H.

Shakhovite

N.A. Pat'chik, M.Yu. Antipin, V.I. Vasil'ev, K.A. Potekhin, Yu.T.Struchkov (1984) Crystal structure of shakhovite H&SbOu.Doklady Akad. Nauk SSSR, 278, 108-1 12 (in Russian).

The crystal structure of shakhovite was solved and refined toR : 6.00/o for 1160 observed reflections. A revised chemicalformula has resulted: H&SbOu. The unit cell has been reset toone-half the volume of the previously proposed setting: d :

4 . 8 5 5 ( l ) , b : 5 . 4 1 5 ( 2 ) , c : 8 . 2 4 9 ( 2 ) A , o : 1 0 6 . 4 2 ( 2 ) , P :104.18(2) , t :98 .75(2Y, g iv ingZ: I and D*rc :8 .64 g /cm3.T.S.E.

Sjiigrenite

O.K. Ivanov, Yu.V. Mozzherin, V.I. Vilisov (1986) New dataon sj<igrenite. Izvestiya Akad. Nauk Kazakh. SSR, Geol. Ser.l, 40-45 (in Russian).

Colorless sjogrenite occurs with pokrovskite and magnesite ina vein cutting serpentinitized dunite in the Zlatogor layered in-trusion (northern Kazakhstan), reported to be the second docu-mented locality. Microprobe analyses of five individuals fromthis tocality yield Fe 16.97-18.54, Mn 0.0-O.30, and Mg 21.66-25.88 wt0/0. Loss on ignition in a capillary was 40.610/o and asemiquantitative combustion method gave about l0lo C. Basedon a review of hydroxides, carbonates, and hydrocarbonates, inwhich Fe3* is reported to lend brown colors, whereas Fe2+ doesnot contribute to color, the authors have proposed that the Fein sjtigrenite is ferrous. Thus the formula should beM&FeS*(COTXOH),0' 5H,O, not Mg6Fer+(CO3XOH),6 4HrO, theformula proposed for the type material. E,S.G.

Tugarinovite

V.G. Kruglova, G.A. Sidorenko, Ye.G. Ryabeva, A.A. Poter-yaykina, L.S. Dubakina (1984) New data on tugarinovite. Do-

klady Akad. Nauk SSSR, Earth Sciences Section, 264, 149-1 5 2 (English translation of original, 264, 689-693)'

Further study of tugarinovite, monoclinic MoOr, showed thatit is typically polysynthetically twinned, and bireflectance andanisotropism color effects are conspicuous. Detailed optical databased on measurements from 260 to 700 nm are given. Partialto complete pseudomorphism by wulfenite occurs in oxidizedmaterial. J.L.J.

Waylandite

A.M. Clark, A.G. Couper, P.G. Embrey, E.E. Fejer (1986) Way-landite: New data, from an occurrence in Cornwall, with a noteon "agnesite." Mineral. Mag., 50, 731-733.

Waylandite, a member of the crandallite group, is uniaxialpositive, o:: 1.748, e : I.7'14, mostly twinned, some cyclically.Four electron-microprobe analyses gave AlrO3 25.29-28.1, SiO20.06-0.18, P,O' 20.96-23.96, CaO 0.63-1.40, FeO 0.15-O.81,CuO 0.81-1.06, BaO 0.77-1.01, Bi,O3 32.2' l-37.32, H,O (calc.

by difference) Ill5-14.32 wt0/0. The idealized formula is Bi-Al3eO4),(OH)6. X-ray powder data yield a cell with a : 6.9834(3),c : 16.175(l) A;z: 3, D."r. : 4.08 g/cm3. The optical results,chemical analyses, and simplified formula are new. J.L.J'

Discredited Minerals

Cuprocassiterite (: motntt,oot,",

P.J. Dunn, W.L. Roberts (1986) Cuprocassiterite discredited asmushistonite. Mineral. Record, 17, 383.

Cuprocassiterite was originally described by Lllke (1893) fromthe Etta mine, near Keystone, Pennington County, South Dakota.Microprobe studies on source material have shown the "mineral"to be very inhomogeneous, although predominantly composedof Cu and Sn, and examination of the X-ray powder pattern hasshown that the cuprocassiterite is in fact mushistonite. Discred-iting of the name was approved by the IMA Commission. R.A.S.

Kusuite (: Plomboan wakefieldite-(Ce)*)

M. Deliens, P. Piret ( 1986) Kusuite becomes known as plomboanwakefieldite-(Ce). Bull. Min6ral., 109, 305 (in French).

The name kusuite has been changed to plomboan wakefieldite-(Ce) in accordance u/ith the nomenclature proposed by kvinsonand accepted by IMA. The adjectival modifier, plomboan, em-phasizes the partial substitution of Ce by Pb. J.D.G.

ERRATA

The following are errata for "Procedures involving the IMA Commission on New Minerals andMineral Names and guidelines on mineral nomenclature" by E. H. Nickel and J. A. MandarinolAmerican Mineralogist, v.72 (1987), p. 1031-10421.

Page 1034, column 2, line 8 from bottom: change elements Y or Sc lo element Y.Page 1037, column 5, line 3l from bottom: changeEucolite lo Eudialyte.Page 1037, column 5, line 23 from bottom: changefeitknechite to feitknechtite.Page 1038, column 2, line 23 in Table: change Gotzenite lo Gdtzenite.Page 1038, column 2, Iine l0 from bottom: changeTantettxenite lo Tanteuxenite-(Y).Page 1038, column 5, line 13 from bottom: changeCrocidolite toAsbestiform riebeckite.Page 1039, column 2,line 12 from bottom: changeKarnasurtite to Karnasurtite-(Ce).Page 1039, column 2, line I I from bottom: change Crocidolite to Asbestiform riebeckite.Page 1039, column 2, line 10 from bottom: change Crocid,olite /o Asbestiform riebeckite.Page 1039, column 5, line 41 in Table: changePsilomelane to Romanechite.Page 1039, column 5, line 59 in Table: deleteBeta-lomonosovrte.Page 1040, column 2, line 8 in Table: changeYtrropyrochlore lo Yttropyrochlore-(Y).Page 1040, column 2, line 3 from bottom: change Chtxchite /o Churchite-(Y).Page 1040, column 2, last line: change Alpha-qtrartz to Quartz.Page 1040, column 4, hne 24 in Table: aler Simpsonite add (of Wade and Prider).Page 1040, column 4, line 51 in Table: afterStlbiomicrolite add(of Quensel and Berggren).Page 1040, column 4, line 65 in Table: a/er Sundiusite add (of Phillips and Layton).Page 1042, column 1, line 2 in Appendix 2: insert Aeschlnite-(Y) below Aeschynite-(Nd).Page 1042, columns I and 2,line 3l from botrom: deleteEwaldite andEwaldite-(Y\.Page 1042, columns I and, 2,line 5 from bottom: change Keivyite to Keiviite and Keivyite-(Yb) lo Keiviite-(Yb).Page 1042, column l, line 5 from bottom: insertKeiviite-ff) below Keivyite.Page 1042, column l, line 3 from bottom: lnserl Kuliokite-(Y below Kobeite.Page 1042, columns 1 and 2,line 2 from bottom: delete Kusuite and Kusuite{Cer.Page 1042, column 3, line 9 from bottom: insertXinganite-(Y) below Xenotime.

NOTICE

Snr 37 oF THEJCPDS PowoEn Drrrn-tcrroN FrLE

This year, the Powder Diffraction File features Set 37, whichcontains 1500 inorganic patterns and 500 organic and organo-metallic pattems.

The complete Powder Ditrraction File, used as the standardreference source for powder ditrracrion analysis, consists of 37sets of data containing approximately 48000 numeric patternsof crystalline materials.

Each set ofdata is divided into an inorganic section, consistingof inorganic compounds, metals, alloys and minerals, and anorganic section consisting of organic and organic-metallic com-pounds. Powder patterns for materials are easily located in the

file by the use of search manuals in which the eight strongestlines with relative intensities are listed and the three most in-tense permuted.

The traditional Data Card has been replaced in Set 37 with abook form volume and for the first time, the file is available ona CD-ROM for retrieval and display of all data related to apattem. Other available media include data card (older sets),microfiche, magnetic tape, APD disk, and microcomputer.Subfiles for metals and alloys, minerals, and forensic materialsare also available.

For a descriptive brochure, write to JCPDS-InternationalCentre for Diffraction Data, 160 I Park Lane, Swarthmore, Penn-sylvania 19081-2389, U.S.A.