Ilirneyite, Mg0.5[ZnMn3+(TeO3)3]·4.5H2O, a New Mineral from Chukotka, Russia

Abstract

Research Article| November 01, 2018 Ilirneyite, Mg0.5[ZnMn3+(TeO3)3]·4.5H2O, a New Mineral from Chukotka, Russia Igor V. Pekov; Igor V. Pekov § Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia §Corresponding author e-mail address: [e-mail] Search for other works by this author on: GSW Google Scholar Oleg I. Siidra; Oleg I. Siidra Department of Crystallography, Saint-Petersburg State University, University emb. 7/9, St. Petersburg, 199034, RussiaNanomaterials Research Center, Kola Science Center, Russian Academy of Sciences, Apatity, Murmansk Region, 184200, Russia Search for other works by this author on: GSW Google Scholar Evgeniy A. Vlasov; Evgeniy A. Vlasov Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia Search for other works by this author on: GSW Google Scholar Vasiliy O. Yapaskurt; Vasiliy O. Yapaskurt Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia Search for other works by this author on: GSW Google Scholar Yury S. Polekhovsky; Yury S. Polekhovsky Department of Mineral Deposits, Saint-Petersburg State University, University emb. 7/9, St. Petersburg, 199034, Russia Search for other works by this author on: GSW Google Scholar Andrey V. Apletalin Andrey V. Apletalin Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia Search for other works by this author on: GSW Google Scholar Author and Article Information Igor V. Pekov § Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia Oleg I. Siidra Department of Crystallography, Saint-Petersburg State University, University emb. 7/9, St. Petersburg, 199034, RussiaNanomaterials Research Center, Kola Science Center, Russian Academy of Sciences, Apatity, Murmansk Region, 184200, Russia Evgeniy A. Vlasov Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia Vasiliy O. Yapaskurt Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia Yury S. Polekhovsky Department of Mineral Deposits, Saint-Petersburg State University, University emb. 7/9, St. Petersburg, 199034, Russia Andrey V. Apletalin Faculty of Geology, Moscow State University, Vorobievy Gory, 119991 Moscow, Russia §Corresponding author e-mail address: [e-mail] Publisher: Mineralogical Association of Canada First Online: 04 Dec 2018 Online Issn: 1499-1276 Print Issn: 0008-4476 © 2018 Mineralogical Association of Canada The Canadian Mineralogist (2018) 56 (6): 913–921. https://doi.org/10.3749/canmin.1800028 Article history First Online: 04 Dec 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Igor V. Pekov, Oleg I. Siidra, Evgeniy A. Vlasov, Vasiliy O. Yapaskurt, Yury S. Polekhovsky, Andrey V. Apletalin; Ilirneyite, Mg0.5[ZnMn3+(TeO3)3]·4.5H2O, a New Mineral from Chukotka, Russia. The Canadian Mineralogist 2018;; 56 (6): 913–921. doi: https://doi.org/10.3749/canmin.1800028 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyThe Canadian Mineralogist Search Advanced Search Abstract The new mineral ilirneyite, ideally Mg0.5[ZnMn3+(Te4+O3)3]·4.5H2O, a member of the zemannite structural family, was found at the Sentyabr'skoe Ag-Au deposit, Ilirney ore district, Western Chukotka, North-Eastern Region, Russia. It is associated with gypsum, malachite, azurite, cerussite, anglesite, brochantite, linarite, posnjakite, chlorargyrite, acanthite, gold, goethite, coronadite, paratellurite, raisaite, and xocomecatlite in the oxidation zone of quartz veins with tellurides. Ilirneyite occurs as: (1) long prismatic hexagonal crystals up to 0.15 mm in length and up to 0.01 mm in thickness, typically combined in sprays or open-work chaotic groups; (2) moss-like aggregates consisting of acicular to hair-like crystals up to 0.03 mm in length and up to 2 μm in thickness; and (3) earthy films. Ilirneyite is transparent to translucent, reddish brown, dark brownish-red, brown, or light brown. The luster is adamantine to semi-metallic in crystals and silky in moss-like aggregates. Ilirneyite is brittle; cleavage was not observed. Dcalc = 4.205 g/cm3. In reflected light, ilirneyite is dark grey. Bireflectance is weak, internal reflections are red-brown. The reflectance values [Rmax–Rmin, % (λ, nm)] are: 9.0–7.0 (470), 8.7–7.3 (546), 8.6–7.2 (589), 8.4–7.1 (650). The chemical composition (average of nine analyses, H2O by stoichiometry) is MgO 4.20, MnO 1.25, CuO 0.58, ZnO 11.42, Mn2O3 7.14, Fe2O3 0.06, TeO2 65.06, H2Ocalc 11.01, total 100.72 wt.%. The empirical formula calculated based on Te3O9 with 4.5 H2O molecules pfu is Mg0.56[Zn1.03Mg0.21Mn2+0.13Cu0.05Mn3+0.67Fe3+0.01(Te4+O3)3]·4.5H2O. Ilirneyite is hexagonal, P63/m, a 9.423(1), c 7.669(1) Å, V 589.7(2) Å3, and Z = 2. The strongest reflections of the powder XRD pattern [d,Å(I)(hkl)] are: 8.18(100)(100), 4.088(61)(200), 3.847(14)(002), 3.087(15)(120, 210), 2.977(16)(112), 2.864(24)(121, 211), and 2.796(52)(202). The crystal structure was solved from single-crystal XRD data, R1 = 0.045. Ilirneyite is isotypic with other zemannite-like minerals. It is named after the discovery locality. 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