Hostname: page-component-8448b6f56d-qsmjn Total loading time: 0 Render date: 2024-04-24T06:26:50.978Z Has data issue: false hasContentIssue false
  • English
  • Français

Mitrofanovite, Pt3Te4, a new mineral from the East Chuarvy deposit, Fedorovo–Pana intrusion, Kola Peninsula, Russia

Published online by Cambridge University Press:  03 October 2018

Victor V. Subbotin ,
Anna Vymazalová ,
František Laufek ,
Yevgeny E. Savchenko ,
Chris J. Stanley ,
Dmitry A. Gabov  and
Jakub Plášil
Victor V. Subbotin
Affiliation:
Geological Institute, Kola Science Centre of the Russian Academy of Sciences, 184209 Apatity, Russia
Anna Vymazalová*
Affiliation:
Czech Geological Survey, Geologická 6, 152 00 Prague 5, Czech Republic
František Laufek
Affiliation:
Czech Geological Survey, Geologická 6, 152 00 Prague 5, Czech Republic
Yevgeny E. Savchenko
Affiliation:
Geological Institute, Kola Science Centre of the Russian Academy of Sciences, 184209 Apatity, Russia
Chris J. Stanley
Affiliation:
Department of Earth Sciences, Natural History Museum, London SW7 5BD, UK
Dmitry A. Gabov
Affiliation:
Geological Institute, Kola Science Centre of the Russian Academy of Sciences, 184209 Apatity, Russia
Jakub Plášil
Affiliation:
Institute of Physics, AS CR v.v.i. Na Slovance 2, 182 21, Prague 8, Czech Republic
*
*Author for correspondence: Anna Vymazalova, Email: anna.vymazalova@geology.cz
Get access Rights & Permissions [Opens in a new window]

Abstract

Mitrofanovite, Pt3Te4, is a new telluride discovered in low-sulfide disseminated ore in the East Chuarvy deposit, Fedorovo–Pana intrusion, Kola Peninsula, Russia. It forms anhedral grains (up to ~20 μm × 50 μm) commonly in intergrowths with moncheite in aggregates with lukkulaisvaaraite, kotulskite, vysotskite, braggite, keithconnite, rustenburgite and Pt–Fe alloys hosted by a chalcopyrite–pentlandite–pyrrhotite matrix. Associated silicates are: orthopyroxene, augite, olivine, amphiboles and plagioclase. Mitrofanovite is brittle; it has a metallic lustre and a grey streak. Mitrofanovite has a good cleavage, along {001}. In plane-polarised light, mitrofanovite is bright white with medium to strong bireflectance, slight pleochroism, and strong anisotropy on non-basal sections with greyish brown rotation tints; it exhibits no internal reflections. Reflectance values for the synthetic analogue of mitrofanovite in air (Ro, Re’ in %) are: 58.4, 54.6 at 470 nm; 62.7, 58.0 at 546 nm; 63.4, 59.1 at 589 nm; and 63.6, 59.5 at 650 nm. Fifteen electron-microprobe analyses of mitrofanovite gave an average composition: Pt 52.08, Pd 0.19, Te 47.08 and Bi 0.91, total 100.27 wt.%, corresponding to the formula (Pt2.91Pd0.02)Σ2.93(Te4.02Bi0.05)Σ4.07 based on 7 atoms; the average of eleven analyses on synthetic analogue is: Pt 52.57 and Te 47.45, total 100.02 wt.%, corresponding to Pt2.94Te4.06. The density, calculated on the basis of the formula, is 11.18 g/cm3. The mineral is trigonal, space group R$\overline 3 $m, with a = 3.9874(1), c = 35.361(1) Å, V = 486.91(2) Å3 and Z = 3. The crystal structure was solved and refined from the powder X-ray-diffraction data of synthetic Pt3Te4. Mitrofanovite is structurally and chemically related to moncheite (PtTe2). The strongest lines in the powder X-ray diffraction pattern of synthetic mitrofanovite [d in Å (I) (hkl)] are: 11.790(23)(003), 5.891(100)(006), 2.851(26)(107), 2.137(16)(1013), 2.039(18)(0114), 1.574(24)(0120), 1.3098(21)(0027). The structural identity of natural mitrofanovite with synthetic Pt3Te4 was confirmed by electron backscatter diffraction measurements on the natural sample. The mineral name is chosen to honour Felix P. Mitrofanov, a Russian geologist who was among the first to discover platinum-group element mineralisation in the Fedorova–Pana complex.

Keywords

mitrofanoviteplatinum tellurideplatinum-group mineralPt3Te4 phasereflectance dataX-ray-diffraction datacrystal structureEast Chuarvy depositFedorovo–Pana intrusionKola PeninsulaRussia
Type
Article
Information
Mineralogical Magazine , Volume 83 , Issue 4 , August 2019 , pp. 523 - 530
Copyright
Copyright © Mineralogical Society of Great Britain and Ireland 2018 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

Associate Editor: Brian O'Driscoll

References

Adenis, C., Langer, V. and Lindqvist, O. (1989) Reinvestigation of the structure of tellurium. Acta Crystallographica, C45, 941–942Google Scholar
Alapieti, T.T. and Lahtinen, J.J. (2002) Platinum-group element mineralization in layered intrusions of Northern Finland and the Kola Peninsula, Russia. Pp. 507–546 in: The Geology, Geochemistry, Mineralogy and Mineral Beneficiation of Platinum-Group Elements (Cabri, L. J., editor). Canadian Institute of Mining, Metallurgy and Petroleum, Special Volume 54.Google Scholar
Bhan, S., Gödecke, T. and Schubert, K. (1969) Konstitution Einiger Mischungen des Platins Mit B-Elementen (B = Sn, Sb, Te). Journal of Less-Common Metals, 19, 121–140 [in German].Google Scholar
Cenzual, K., Gelato, L.M., Penzo, M. and Parthé, E. (1990) Overlooked trigonal symmetry in structures reported with monoclinic centered Bravais lattives; trigonal description of Li8Pb3, PtTe, Pt3Te4, Pt2Te3, LiFe6Ge4, LiFe6Ge5, CaGa6Te10 and La3.266Mn1.1S6. Zeitschrift für Kristallographie, 193 (3–4), 217–242.Google Scholar
Genkin, A.D., Zhuravlev, N.N. and Smirnova, E.M. (1963) Moncheite and kotulskite – new minerals – and the composition of michenerite. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 92, 33–50 [in Russian].Google Scholar
Gronvold, F., Haraldsen, H. and Kjekshus, A. (1960) On the sulfides, selenides and tellurides of platinum. Acta Chemica Scandinavica, 14, 1879–1893.Google Scholar
Kazanov, O. and Kalinin, A. (2008) The structure and PGE mineralization of the East Pansky layered massif. Pp. 57–68 in: An Interreg Tacis Project: Strategic Mineral Resources of Lapland – Base for the Sustainable Development of the North. Project publication, volume I. KSC Russian Academy of Science, Apatity, Russia.Google Scholar
Laufek, F., Drábek, M., Skála, R., Haloda, J., Táborský, Z. and Císařová, I. (2007) Vavřínite, Ni2SbTe2, a new mineral species from the Kunratice Cu-Ni sulfide deposit, Czech Republic. The Canadian Mineralogist, 45, 1213–1219.Google Scholar
Naldrett, A.J. (2004) Magmatic Sulphide Deposits: Geology, Geochemistry and Exploration. Springer Verlag, 728 pp.Google Scholar
Owen, E.A and Yates, E.L. (1933) Precision measurements of crystal parameters. Philosophical Magazine, 15, 472–488.Google Scholar
Rodríguez-Carvajal, J. (2006) Full Prof. 2k Rietveld profile matching & integrated intensities refinement of X-ray and/ or neutron data (powder and/or single-crystal). Laboratoire Léon Brillouin, Centre d'Etudes de Saclay, Gif-sur-Yvette, France.Google Scholar
Shimazaki, H. and Ozawa, T. (1978) Tsumoite, BiTe, a new mineral from Tsumo mine, Japan. American Mineralogist, 63, 1162–1165.Google Scholar
Subbotin, V.V., Vymazalová, A., Laufek, F., Savchenko, Y.E., Stanley, C.J., Gabov, D.A. and Plášil, J. (2018) Mitrofanovite, IMA 2017-112. CNMNC Newsletter No. 42, April 2018, page 450; Mineralogical Magazine, 82, 445–451.Google Scholar
Ward, M., McLaughlin, D., Kalinin, A., Kazanov, O. and Voitekhovich, V. (2008) Kola Mining-Geological Company LTD (KMGC) – prospecting for PGE in the eastern part of Pansky Tundra area. Pp. 52–55 in: An Interreg Tacis Project: Strategic Mineral Resources of Lapland – Base for the Sustainable Development of the North. Project publication, volume I. KSC Russian Academy of Science, Apatity, Russia.Google Scholar
Supplementary material: File

Subbotin et al. supplementary material

Subbotin et al. supplementary material

Download Subbotin et al. supplementary material(File)
File 118.8 KB