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American Mineralogist, Volume 82, pages 1038±1041, 1997 NEW MINERAL NAMES* JOHN L. JAMBOR,1 NIKOLAI N. PERTSEV,2 AND ANDREW C. ROBERTS3 1Department of Earth Sciences, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada 2IGREM RAN, Russian Academy of Sciences, Moscow 10917, Staromonetnii 35, Russia 3Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0G1, Canada Afanasyevaite, cheso®ite, igumnovite, rhythmite 50.1±51.2 (R2). Indexing of the X-ray powder pattern indi- B.V. Chesnokov (1995) High-temperature chlorosilicate cated trigonal symmetry, space group P3m1, a 5 4.249(2), in burned-out mine spoil heaps in the Chelyabinsk coal c 5 62.82(5) AÊ . The X-ray powder pattern (27 lines, dif- basin. Doklady Akad. Nauk, 343(1), 94±95 [English fractometer, CoKa1 radiation) has strongest lines at translation in Trans. Russ. Acad. Sci., Earth Sci. Sect., 4.50(46,00.14), 3.09(100,01.11), 2.255(38,10.22), and 345(8), 104±106, 1996]. 2.126(25,110). The structure has 33 layers per cell. Electron microprobe analyses (not given, except for Cl The mineral occurs among voids in aggregates of an- and F) are reported to correspond to the following named dradite, calcite, chlorite, and stilpnomelane in altered magnetite-andradite skarn at the Tyrny'auz W-Mo depos- compounds. Afanasyevaite is Ca8[Si2O7]2´Cl2O, granular habit, pseudocubic; electron microprobe analysis gave it, Kabardino-Balkaria Republic, Russian Federation. Baksanite contains inclusions of native gold and, rarely, 6.19 Cl (calc., 9.35 wt%), 0.85 F, and 0.64 SO3 wt%. Cheso®ite is Ca [Si O ] ´CaCl , acicular habit, monoclin- intergrowths of ingodite and joseite-A; all are separated 9 2 7 3 2 from the host aggregates by a thin lining of bismuthinite. ic, Cl 7.33, F 0.04 wt%. Igumnovite is Ca3Al2[SiO4]2Cl4, cubic, Cl 28.25, F 0.13 wt%. Rhythmite is The new name refers to the type locality, the Baksan Riv- er valley. Type material is in the Fersman Mineralogical Ca4[SiO4]2´3CaCl2, orthorhombic, Cl 31.06, F 0.22 wt%. The compounds were formed by the reaction of mudstone Museum, Moscow, Russia. N.N.P. and dolomite, and other carbonate rocks, in burned-out mine wastes from the Kopeysk coal mines in the Chelya- Fougerite binsk basin, southern Urals, Russia. Discussion. Additional data and the derivation of the F. Trolard, M. Abdelmoula, G. BourrieÂ, B. Humbert, J.-M.R. GeÂnin (1996) Evidence of the occurrence of a names are not given. The compounds no longer qualify ``green rusts'' component in hydromorphic soils. Pro- as minerals. J.L.J. posed existence of a new mineral ``fougerite.'' C. Ren- du Acad. Sci. Paris, Ser. IIa, 323, 1015±1022 (in French, English abs.). Baksanite* F. Trolard, J.-M.R. GeÂnin, M. Abdelmoula, G. BourrieÂ, B. I.V. Pekov, E.N. Zav'yalov, S.V. Fedyushchenko, D.K. Humbert, A. Herbillon (1997) Identi®cation of a green Shcherbachev, Yu.S. Borodayev, G.D. Dorokhova rust mineral in a reductomorphic soil by MoÈssbauer and Raman spectroscopies. Geochim. Cosmochim. (1996) Baksanite, Bi6(Te2S3), a new mineral from Tyr- ny'auz (northern Caucasus). Doklady Akad. Sci., Acta, 61, 1107±1111. 347(6), 787±791 (in Russian). So-called green rusts are well known synthetically. It has long been assumed that the same, mixed-valence Electron microprobe analysis of several grains that were Fe21-Fe31 compound is responsible for the blue-green col- checked by X-ray powder patterns gave a mean of Bi 76.40, ors in sediments and hydromorphic soils that rapidly be- Pb 2.15, Sb 0.12, Te 14.33, Se 0.00, S 6.64, sum 99.64 come ochreous upon exposure to air as a consequence of wt%, corresponding to (Bi Pb Sb ) (Te S ). The 5.78 0.16 0.02 S5.96 1.77 3.27 oxidation of Fe21 and transformation of the blue-green composition is uniform. The mineral occurs as spherical to phase to goethite and lepidocrocite. MoÈssbauer and Ra- droplet-like single grains and aggregates up to 13 mm man spectra, and dissolution by citrate-bicarbonate re- across; steel-gray color, metallic luster, black streak, perfect agent, showed that the natural and synthetic compounds basal cleavage, H 5 11 ±2, VHN 5 62 (mean for aniso- /2 5 are identical; previous studies had indicated the general tropic sections), D 5 8.1(1), D 5 8.07 g/cm3 for Z 5 meas calc formula of the compound to be [Fe21 Fe31 (OH) ]x1´ 3. Bright white in re¯ected light, weak bire¯ectance, dis- 1 2 xx 2 [xA2z´mHO]x2, where Fe is in Fe(OH) brucite-like layers tinctly anisotropic in yellowish gray tints; re¯ectance per- /z /z2 2 that alternate with Az2 anions and H O molecules. The centages, given in 20 nm steps from 400 to 700 nm, range 2 formula can be simpli®ed as Fe21Fe31(OH) . The new from 46.3±48.5 (R , 400 and 700 nm, respectively) and 5 1 name fougerite refers to the locality of the natural sample * Before publication, minerals marked with an asterisk were studied, which was from a soil pro®le at FougeÁres, Brit- approved by the Commission on New Minerals and Mineral tany, France. Names, International Mineralogical Association. Discussion. The authors state that the name fougerite 0003±004X/97/0910±1038$05.00 1038 JAMBOR ET AL.: NEW MINERAL NAMES 1039 has been submitted to the ``IMA Committee,'' but a com- Pr2O3 1.19, Nd2O3 4.26, Y2O3 0.15, CO2 (calc.) 21.95, F plete proposal has not been received by the CNMMN. 3.18, O [ F 1.34, sum 100.63 wt%, corresponding to J.L.J. (Ba1.86Sr0.09Ca0.04)S1.99(Ce0.56La0.24Nd0.15Pr0.04Y0.01)S1.00(CO3)3F1.01. Occurs as prismatic, bladed crystals, up to 1.0 mm long, commonly as dendritic or stellate groups, 2±3 mm across. Gallobeudantite* Color yellow, white, or pinkish gray, white streak, transpar- J.L. Jambor, D.R. Owens, J.D. Grice, M.N. Feinglos ent, vitreous to greasy luster, cleavage not observed, brittle, uneven fracture, VHN 5 280(25), H 5 4.5, D 5 4.7(1), (1996) Gallobeudantite, PbGa3[(AsO4),(SO4)]2(OH)6,a 25 meas 3 new mineral species from Tsumeb, Namibia, and as- Dcalc 5 4.62 g/cm for Z 5 2; effervesces in HCl, non¯u- sociated new gallium analogues of the alunite-jarosite orescent. The infrared spectrum has strong absorption bands family. Can. Mineral., 34, 1305±1315. at 1600±1200, 1100±1060, 900±850, and 745±675 cm21. Optically biaxial negative, a51.584(1), b51.724(3), g One representative electron microprobe analysis (of 5 1.728(3), 2V 5 16(1)8,2V 5 188, Z c 5 26.58 in eight) gave PbO 32.1, ZnO 2.2, Ga O 19.2, Fe O 2.9, meas calc ` 2 3 2 3 obtuse b, medium dispersion r . v, Y 5 b. Single-crystal Al O 8.9, As O 16.0, SO 10.5, P O 0.2, GeO 0.6, H O 2 3 2 5 3 2 5 2 2 X-ray study indicated monoclinic symmetry, space group 8.3 (from stoichiometry and crystal-structure analysis), P2 /m, a 5 13.396(7), b 5 5.067(1), c 5 6.701(1) AÊ , b5 sum 100.9 wt%, corresponding to Pb (Ga Al Fe31 1 1.00 1.43 1.21 0.25 106.58(1)8. Strongest lines of the powder pattern are 4.00 Zn Ge ) [(AsO ) (SO ) (PO ) ] (OH) , ide- 0.19 0.04 S3.12 4 0.96 4 0.91 4 0.02 S1.89 6.41 (100,111,201), 3.269(100,310,202,401), 2.535(20,020, ally PbGa[(AsO ),(SO )] (OH) . This is the Ga analog of 4 4 2 6 112), 2.140(40,221,003,512,600), and 2.003(40, several). beudantite, idealized as PbFe31 [(AsO )(SO )] (OH) . Oc- 3 4 4 2 6 The new name is for A.A. Kukharenko (1914±1993), curs as zones within rhombohedra, up to 200 mm along in recognition of his contributions to the geology of the an edge, in vugs in a single specimen of Cu-bearing sul- Kola Peninsula. The mineral occurs in carbonatites and ®des (renierite, germanite-like, tennantite, and secondary zeolite-carbonate rocks in the Khibina and VuorijaÈrvi al- chalcocite). Crystals are variably pale yellow, greenish, kaline massifs, Kola Peninsula, Russia, in a hornfels xe- or cream-colored; white to pale yellow streak, vitreous nolith at Mont Saint Hilaire, QueÂbec, and in cavities in luster, even to conchoidal fracture, H 5 4, transparent, the Saint-Amable sill, a nepheline syenite related to the brittle, non¯uorescent, possible {001} cleavage, D 5 calc Mont Saint Hilaire alkaline intrusions. Type material is 4.61 g/cm3 for Z 5 3. Optically nonpleochroic, uniaxial in the Mineralogical Museum of the Department of Min- negative, v51.763(5), e51.750(5). Single-crystal eralogy, Saint Petersburg University, Russia, and in the X-ray structure study (R 5 0.078) indicated hexagonal Canadian Museum of Nature, Ottawa. J.L.J. (rhombohedral) symmetry, space group R3m, a 5 7.225(4), c 5 17.03(2) AÊ , isostructural with corkite. Strongest lines of the 114.6 mm Debye±Scherrer powder NezÏilovite* pattern (CoK radiation) are 5.85(90)(101), 3.59(40)(110), a V. Bermanec, D. Holtstam, D. Sturman, A.J. Criddle, 3.038(100)(113), and 2.271(40)(107).
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    THE AMERICAN MINER.{LOGIST, VOL. 55, SEPTEMBER-OCTOBER, 1970 NEW MINERAL NAN4ES Polarite A. D GnNrrrv, T. L EvsrrcNrEVA, N. V. Tnoxnve, eno L. N. Vver.,sov (1969) polarite, Pd(Pb, Bi) a new mineral from copper-nickel sulfide ores.Zap. Vses.Mined. Obslrch. 98, 708-715 [in Russian]. The mineral was previouslv described but not named by cabri and rraill labstr- Amer. Mineral.52, 1579-1580(1967)lElectronprobeanalyseson3samples(av.of 16, 10,and15 points) gave Pd,32.1,34.2,32 8; Pb 35.2, 38.3,34 0; Bi 31.6, 99.1,334; sum 98 9, 102.8, 100.2 percent corresponding to Pcl (Pb, Bi), ranging from pd1.6 (pb04? Bi0.60)to pdro (PboogBio rs). X-ray powder daLa are close to those of synthetic PbBi. The strongest lines (26 given) are 2 65 (10)(004),2.25 (5)(331),2.16 (9)(124),1.638(5)(144). These are indexed on an orthorhombic cell with a7 l9l, D 8 693, c 10.681A. single crystal study could not be made. In polished section, white with 1'ellowish tint, birefringence not observed. Under crossed polars anisotropic with slight color effects from gray to pale brown Maximum reflectance is given at 16 wave lengths (t140 740 nm) 56.8 percent at 460 nm; 59.2 at 540; 59.6 at 580; 6I.2 at 660. Microhardness (kg/mmr) was measured on 3 grains: 205,232, av 217;168- 199, av 180; 205-232, av 219. The mineral occurs in vein ores of the'r'alnakh deposit amidst chalcopyrite, talnekhite, and cubanite, in grains up to 0.3 mm, intergro.wn with pdspb, Cupd6 (Sn, pb): (stannopal- ladinite), nickeloan platinum, sphalerite, and native Ag The name is for the occurence in the Polar urals.
  • The Formation of Green Rust Induced by Tropical River Biofilm Components Frederic Jorand, Asfaw Zegeye, Jaafar Ghanbaja, Mustapha Abdelmoula

    The Formation of Green Rust Induced by Tropical River Biofilm Components Frederic Jorand, Asfaw Zegeye, Jaafar Ghanbaja, Mustapha Abdelmoula

    The formation of green rust induced by tropical river biofilm components Frederic Jorand, Asfaw Zegeye, Jaafar Ghanbaja, Mustapha Abdelmoula To cite this version: Frederic Jorand, Asfaw Zegeye, Jaafar Ghanbaja, Mustapha Abdelmoula. The formation of green rust induced by tropical river biofilm components. Science of the Total Environment, Elsevier, 2011, 409 (13), pp.2586-2596. 10.1016/j.scitotenv.2011.03.030. hal-00721559 HAL Id: hal-00721559 https://hal.archives-ouvertes.fr/hal-00721559 Submitted on 27 Jul 2012 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. The formation of green rust induced by tropical river biofilm components Running title: Green rust from ferruginous biofilms 5 Frédéric Jorand, Asfaw Zegeye, Jaafar Ghanbaja, Mustapha Abdelmoula Accepted in Science of the Total Environment 10 IF JCR 2009 (ISI Web) = 2.905 Abstract 15 In the Sinnamary Estuary (French Guiana), a dense red biofilm grows on flooded surfaces. In order to characterize the iron oxides in this biofilm and to establish the nature of secondary minerals formed after anaerobic incubation, we conducted solid analysis and performed batch incubations. Elemental analysis indicated a major amount of iron as inorganic compartment along with organic matter.
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    NEW MINERAL NAN,{ES Gallite H. SrnuNz, B. H. Grran, exo E. Snnr,rcrn. Gallit, cuGaS:, das erste selbstandige Galli- ummineral, und seine verbreitung in den Erzen der Tsumeb- uncl Kipushi-Mine. NeuesJahrb. Mineral , Monotslt- 1958, No. 1l-1'2,241-264. Galium has long been known to be present in amounts up to 1,.85/6in germanite from Tsumeb and various unidentified minerals have been thought to be gallium minerals. This is now proved to be the case. Analyses by W. Reiner gave Cu 23'52, 35 52; Pb 14.25,3.00; Zn 3'36' 2'76; Fe 3'41, 4.93; Ge 0 66, 0 45; Ga 23.O6,17.11; As 1.00,0 90; S 24.16,27.90;SiOr 4'05, 4 92, sum 97.+7, 97.4g7o. Recalculation, deducting (based on microscopic counts) quartz 4'0, 49; renierite 13.4, 8.0; tennantite 1 0, 0.4; galena 14.0, 1'7; bornite 5 6; chalcocite -,0.5; 2.0 give for , 5.3; digenite pyrite 0.8; and "arsenate" thegallite Cr-26.9,30.8;Pb 3.0,2.3;2n4.6,4.4;Fe2.7,4 9; Ga35.4,29.2;527.4,284/6' corresponclingto CuGaSr, with some substitution of Cu or Ga by Fe and Zn The mineral was also synthesized by passing HuS over an equimolar mixture of Ga:Or and CuzO at 400'; the product gave an r-ray pattern identical with that of the mineral' X-ray study by single crystal and powcler photographs shorvedgallite to be tetragonal, structure like that of chalcopyrite, space group probably Dzal2-142d.