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Home , Atacamite, Boleite, Hemihedrite

American Mineralogist, Volume 58,pages 560-562, 1973

NEWMINERAL NAMES

MrcHlBr FrsrscHnn

Isowolframite L. F. BonrssrsKo,E. K. Srnerruovl, M. E. KazexovA, AND N. P. SeNcHrLo,AND K. A. Muxnlut (1972) The nomen- N. G. SnuuyATsKAyA (1970) First find of crystalline clature of wolframite. Izuest. Akad. Nauk Kazakh SSR, V,O. in the products of volcanic eruption in Kamchatka. Ser.Geol. 4,45-48 (in Russian). Doklady Akad. Nauk SSSR, 193, 683-686 (in Russian).

The complete solid solution series ferberite-hiibnerite Analysis by M.E.K. on 32 mg. of impure material gave (FeWO.MnWOn) is named as follows: V"Oi 39, Na'o 3.9, loss on ignition 12.5, insol. in acid 97.4 percent.The insoluble material containedSiO, 24, CaO Mole /o FeWOr Name 7.7, FeO,3.3, Mg and Al percents.The dissolves readily in HCI or HNO'. 0_20 Hiibnerite The X-ray pattern correspondedclosely to the AsrM pat- 20-40 Manganowolframite tern for synthetic V,O'. The strongest lines are 4.339 40_60 Isowolframite (100)(001), 4.067 (28)(101), 3.411 (28)(110), 2.883 60-80 Ferrowolframite (50)(400). These are indexed on an orthorhombic unit 80-100 Ferberite cell with a 4.35, b 11.53,c 3.57A.; syntheticV"Ou is reported Discussion to havea 4.36,b 11.48,c 3.55A. The mineral The names manganowolframite and ferro-wolframite occurs on the walls of fissuresin the "New" cupola of Bezymyanny were used long ago as synonymsof hiibnerite and ferberite, Volcano, Kamchatka, where fumar- olic gasesrich in HCI respectively.In any case,these and isowolframite are super- and HF are escaping.It consistsof finely fibrous aggregatesof acicular fluous. The two names ferberite and hiibnerite, with adjec- crystals less than 1.5 mm long less than yellow-green, tival modifiers, are adequate. If any change is desirable, and 0.1 mm thick. Color luster vitreous, - (3.36 it would be preferable to name the entire serieswolframite translucent.G 3.2 synthetic), n 2.42. (Fe - mole Vo), as for the olivineseries. Brittle, easily split along the length. The name is for V. V. Shcherbina,Russian geochemist. Cyclowollastonite The mineral and name were approved before publication by the Huco SrnuNz (1970) Mineralog. Tabellen,5th Ed., p. 402. Commission on New and Mineral Names, IMA. Ruprnr HocnlrrrNtn (1972) Cyclowollastonite from the Note. Crystalline dumps of the graphite mines at Pfaftenrenth near Hauz- V:O; was reported without details by Stoiberand Diirr, Econ. ( enberg, Bavarian Forests. Aulschluss, 23, 340-341 (in Geol.5E, 1186 1963). German). Anarakite (probably - A name given to the high-temperaturetriclinic, pseudo- zincian ) hexagonalform of CaSiO,,,previously called pseudowollasto- Dlnrus Aorn, luo Joecnru Or-rprvrlxN (1972) Ein neues nite, found with graphite, phlogopite, spinel, titanite, and Mineral, (Cu, Zn)"(OH)"C1, Kali-Kafi-Mine, scapolite. aus der Provinz Anarak, Tnntral-kan. Neues Iahrb. Minerol. Miromirite Monatsh.335-338. V. Vur,lwovlc ( 1969 ) Miromirite, -bearing davidite Microprobe analysis of a pure and homogeneouscrystal from Nezilovo, Macedonia. Radovi Inst. Geol.-Rudarska gave Cu 48.53, Zn 10.64, Cl 17.25, OH (by difference) Istrazivanja Ispitivanya Nuklear. Drugih Mineral. Siro- 23.58 percent, correspondingto (Cuo*"Znn,.)"(OH),C1. vina 5, (Serbian 147-155. with German summary). DrA study indicated an inversion at 90" and decomposition '+- Analysis gave TiO" 47.91, Nb.O, 0.06, Fe,O' 29.66, at 277 2". Al,Ol 1.54,MnO 0.07,PbO 11.83,rare earths+ ThOj 6.21, Precessionand Weissenbergstudy showed the mineral to U,,O" 2.68, sum 99.96 percent. Spectrographicanalysis be monoclinic,space group C*' or C"oo,a ll.9Ql, b 6.830, - showed (ppm) Mg 350, Sn 159,Zr 1500,Cr 316, Sc 140, c lO.162A., p 112.87', Z 12, G calc 3.90. The strongest La 159, Ba 32, Y I percent. X-ray powder data and optics X-ray lines (18 given) are 5.476 (65)(200), 2.755 (lOO) are given.The origin of the name is not stated. (022), r.708 (30) (040). Color emerald-green, H 3-1.5, biaxial positive, r?s d Discttssion -r 7.842 0.002, 71.849 -+. 0.002, 2V 40., pleochroic from Unnecessaryname for plumboandavidite. grass-greento green. Infra-red absorption study (no data given) gave results differing markedly from those of ataca- Shcherbinaite mite and paratacamite. L. F. BonlseNxo (1972) The new mineral shcherbinaite. The mineral occurs in the zone of oxidation of the ZapiskiVses. Mineral. Obshch.101,464 (in Russian;. Shah Khuni and Kali-Kafi mines, Anarak Province, Cen- 560 NEW MINERAL NAMES 561

(P. 269) tral Iran. associatedwith ,minerals of the Arsenate-Sulfate group, murdochite, plattrrerite,, "khuniite," Green to blue-green crusts found at 3 localities gave rosasite,autunite, and . microchemical tests for Cu, arsenate, and sulfate. The The name is for the Province. strongestX-ray lines (35 given) are 10.69 (10), 4'57 (8), 4.04 (7),2.s5 (5),2.s9 (rO),2.53 (7)' 1.505(6)' Ap- Discussion parently orthorhombic. Optically biaxial, neg', 2V large, ^y -+ Associatedwith brochan- This mineral was submitted to the IMA Commis' a 1.667, 1.717(both 0.003). sion (letter of April 10, 1972). By letter of April tite, lavendulan,and erYthrite. it was pointed out to the authors: (1) that the compo- 18, Bariu'm uranyl arsenate(Mineral F) (p. 303) sition was that of a zincian variety of Cu,(OH),C1, for with meta-heinrichite which the minerals atacamite, paratacamite,and botallack- Occurs in yellow crusts, associated shaft. Microchemical tests ite are known; (2) that their powder data matched closely and uranospinite, at the Sophia some Ca is present' those for rhombohedral paratacamite,a 13.65 (twice their indicate it to be a Ba-uranyl arsenate; The strongest X-ray b), c 13.95L. (3) that the optics matchedthose of para- Readily dissolved by HCI or HNO.. (10), 4'91 (5d), 4'49 (8),3'54 tacamite; (4) that their calculatedvalues of Z and G were lines(43 given)are 9.01 (7), 1.921(5)' 1.877(5)' in error (their data give G 5.61 for Z - 12, G 3'74 for (6),3.29 (6), 3.01(7),2.86 long, 1 micron thick' Z - 8, the latter agreeing closely with G for parataca- In acicular crystals up to 40 microns neg',2V small, rrs a1'605, mite). Probably orthorhombic.Biaxial, Z yellowish'Not The authors replied on May 2, pointing out that synthetic "v1.738(both:L 0.005), X colorless, paratacamite had been describedas monoclinic by Oswald fluorescentin U.V. light. l. Appl. Crystallogr. 4, 530 (1971), but with and Guenter, Calcium-MagnesiumArsenate (a) (p. 316-317) a difterentspace group, P2,/a, a 11.83,b 6'822,c 6'1664., in the Johann Mine with ' B rf0.62". The mineral occurs novacekite,and hoerne- On May 10, it was suggestedto the authors that publi- monohydrocalcite,schroeckingerite, it to be a hydrousCa-Mg cation should be deferred until definitive proof was ob- site. Microchemicaltests indicate lines (42 given) are 7 '28 tained that anarakite differed from paratacamite.The pres- arsenate. The strongest X-ray (8), 3.57(6d), 3'28 (8), 3.21(8), ent paper had beensubmitted to the journal on April 25. (10),6.50 (ro),4.02 (8),2.00 (7d)' 1.838(7), Until proof to the contrary is presented,anarakite must 3.02 (8d),2.96 (8d), 2.54 (5). or monoclinic' rts be consideredto be zincian paratacamite. 1.603 Colorless. Orthorhombic -+ a1.540. t1.563,both 0.002.The optic sign could not be determined. Unnamed hexagonal Cu' .,'S Calcium-Arsenate(c) A. H. Crenx <'iglD e, natural occurrence of hexagonal Mine as colorless Cu'e,S in Rancuaga,. Nature, Pltys. Sci. 238, 723- The mineral occurs in the Johann gypsum associatedwith 124. tabular crystals intergrown with and mineral a above. Microchemicaltests showed it to be a (av. Electron microprobe analysis of 3) using synthetic calcium arsenate; sulfate may be present' The strongest chalcociteand covellite as standards,gave Cu 78.6, S 21.7, X-ray lines(20 given)are 7.86 (10),4.32 (7),3'89 (6), The Fe traces, sum 100.3 percent correspondingto Cu, ",,S. 3.11 0), 2.80 (6), 1.903(5)' Opticallvbiaxial, pos'! t?s (24 given) 3.60 (25), 3.36 (50), parallel strongestX-ray lines are: a 1.513,t 1.554m, both + 0.002,2V 50', r ( a, X (40),2.4s2(25), 3.002(40),2.866 (80),2.630 (65),2.540 elongation,Z 1 plane of tabular crystals.Perhaps the arsen- 2.377 (85), 1.937 (100), 1.860 (90), in good agreement ateanalogue of ardealite. with data on material synthesizedby Cavolotti and Salvago, -3 Electrochim.Metal. 4, 181 (1969) and by Cook et al, I. Calcium-Arsenat e (P. 3 17 18 ) Appl. Phys.41, 3058(1970). The mineral occtlrs at the Anton Mine associatedwith Color bluish-black. Fine granular, grain size not ex- picropharmacolite.Microchemical tests showed that it was ceeding 15 microns. Pale blue in plane polarized light in u hyd.out calcitlm arsenate.The strongestX-ray lines (52 air, not detectablybireflectant, anisotropy strong from pale given)are 10.34(10), 6.39(6),4'09 (6), 3'59 (6)' 3'17 greenish-blueto deep purplish-blue.Slightly softer (Vickers (7),2.84 (8), 2.61 (5). Colorless,transparent to trans- + hardnessabout 50) and less reflectant (R about 35%) lucent. Probably monoclinic, ns a7.652,v1'583' both than the associateddjurleite. 0.002,21/near 90", Z - b,Y A c = 8'' The mineral occurs as a powdery coating on djurleite rsenate-Sttlfate(p. 3 I 8) that rims and in a veinlet in the El Calciu'm-A rbombohedral Teniente copper deposit near Rancagua, central Chile. It The mineral occurs in the Anton Mine as pharmacolite, picro- was probably formed by the oxidation of djurleite. colorless crystals associated with pharmacolite, sainfeldite, and gypsum. The strongestX-ray lines(80 given)are 8.59(10),5.71 (6),5'34 (8)' 4'55 Unnamed Arsenates (6),3.74 (7d),3.se (8), 3.05(7),2.86 (8), 2.83(8), an Kunr WerrNrl (1972) The secondary minerals of the 2.70 (8), 2.67 (8). The rhombohedronfaces are at Co-Ni-Ag-Bi-U- veins in the Wittichen region, central angle of abottt 76'. Fractureconchoidal' Optically uniaxial + BlackForest. Auf scltluss,23,279-329(in German). to slightly biaxial,neg', nE 1'585,nO 1.593,both 0'002' 562 NEW MINERAL NAMES

New Data - Khuniite (probably Hemihedrite) Aktashite D. Aorr, J. OrrrrvaNN, lNo (1972) B. Nussn Further data V. S. GnuzoEv, N. M. Curnunsove, eNo N. G. Snurr,r- on khuniite from the Tschah Khuni mine, Anarak, Iran. xovt (1972) Aktashite, CuaHg+As"Se,new data. Doklady Neues lahrb. Mineral, Monatsh., 329_335. Akad. Nauk SS^SR,206, 6.94-697 (in Russian). See Amer. Mineral. 56, 358-359 (lgi-l). The mineral was first described in 1970 (abstract in Amer. The mineral has been found in the Gal Khaya yakutia. Mineral. 55, 1813), without any X-ray data. Two new micro_ deposit, Analysis probe of material containing pyrite by N.G.S. analysesgave PbO 72.7,72.2; CuO 2.g, 4.2: ZnO 2.4. and a microprobe analysisby Yu. G. Lavrent'ev gave, 1.1;Crgoa 20.1, l9.g; Sio, 3.9,3.9; Moo3 tr., _ _ _; sum tOt.s. resp., Hg 27.80,32.55; 101.7percent, corresponding to pbr(Cuo.aZno.rrXCrOr)3(SiOr). Cu 16.80, 23.2; As 17.O2, 18.9; Sb 0.67, 0.41; S 28.25, 23.6; Fe 9.67, not found; Zn, 0.15, Precessionand Weissenbergphotographs show the mineral to sum lOO.Zl, 101.66per- cent. Subtracting pyrite from the first analysis, both agree with the formula above. X-ray study shows the mineral to be trigonal, space group probably Csa- Ra (indicated by the morphology) or Ctiz - R3, a 13.72+ 0.01,c 9.32 * O.OLA.,Z : 3. X-ray powder data (37 lines) are given. Other data agreewith the previous descrip- tion; reflectancesare given at 9 wavelengths(472 nm, 30.7; 579, 29.9; 691, 27.2 percent. Discussion Discassion Evidently a valid mineral. It was pointed out to the authors in 1970 that khuniite is probably identical with hemihedrite LAmer. Mineral. Discredited Minerals 55, 1088-1144 (1970)1. The X-ray powder data are P. B. Moons (1972) On Igelstriim's manganese arsenates essentially identical, but the triclinic unit cells derived and antimonates from the Sjii Mine, Grytthyttan, Orebro County, Sweden. Geol. F<)ren,Fdrh. 94, 423434. X-ray study was made of type material for species de_ scribed by Igelstrtim (1884-1894) from the collections in the Swedish Natural History Museum. Some of the min_ erals were new species and had priority, but the descrip_ tions were so scanty that new names were given later by others. Moore suggests(agreed to by the IMA Commission on New Minerals and Mineral Names) that these names Blanchardite - now be abandoned. The references below are to Dands System of MineralogX, 7tt' Ed., vol. 2: J. S. Wrnrs, Jn. (1972) What's new in minerals? Mineral. Basiliite (Dana, 1025) = Ifausmannite Feitknechite Record,3,229. * Chloroarsenian(Dana, 684) - Allactite Magnetostibian (Dana, lO25) - Jacobsite Pleonectite (Dana, 9@). The type material - Hedy- phane. Two other samples so labelled were Tephroite and Berzeliite. Pleurasite(Dana, 845), a mixture, mainly Sarkinite Pyrrhoarsenite (Dana, 683 ) - Berzeliite Rhodosarsenian (Dana, 1026) - Rhodonite Sjcigruvite (Dana, 845) = Caryinite.