Abstract
This contribution firstly presents particularities of mineral chemistry of platinum-group elements (PGE) mineralization from placer deposits linked to the Bor-Uryakh massif of the Maimecha-Kotui Province, northern part of the Siberian Craton. The chemical composition of PGE mineralization has been studied by electron microprobe analysis. At Bor-Uryakh, main platinum-group minerals (PGM) comprise Os-Ir and Pt-Fe alloys represented by individual crystals, and polyphase PGM assemblages. The majority (e.g., 12 out of 19) of the Os-rich nuggets are iridian osmium, with subordinate amounts of native osmium (Os) and chengdeite (Ir3Fe). Pt-Fe alloys have a stoichiometric composition close to Pt2Fe. According to the nomen-clature by L. Cabri and C. Feather [1975] these minerals correspond to ferroan platinum. Based on geological position and geochemical features of investigated PGE mineralization the particular rock sources have been established. This study has demonstrated the similarity of chemical characteristics of Os-Ir and Pt-Fe alloys of the Bor-Uryakh massif to those of PGM from the Guli massif (Maimecha-Kotui Province), platiniferous zoned-type ultramafic massifs (e.g., Kondyor, Inagli and Chad) of the Aldan Province and Platinum belt of the Urals (Nizhny Tagil, Kytlym, etc.).
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References
L. S. Egorov, Ijolite-Carbonatite Plutonism (The Maimecha-Kotui Complex of Polar Siberia as an Example (Nedra Press, Leningrad, 1991) [in Russian].
K. K. Zoloev, Yu. A. Volchenko, V. A. Koroteev, I. A. Malakhov, A. N. Mardirosyan, and V. N. Khrypov, Platinum-Bearing Mineralization in Geological Complexes of the Urals (Uralian Geological Prospecting Venture, Yekaterinburg, 2001) [in Russian].
K. N. Malitch, Platinum-Group Elements in Clinopyroxenite-Dunite Massifs of the Eastern Siberia (Geochemistry, Mineralogy, and Genesis) (Saint Petersburg Cartographic Factory VSEGEI Press, St.-Petersburg, 1999) [in Russian].
K. N. Malitch, I. Yu. Badanina, M. M. Goncharov, et al., Dokl. Akad. Nauk 348(2), 232 (1996) [Dokl. Earth Sci. 348 (4), 574 (1996)].
K. N. Malitch, A. A. Kadik, I. Yu. Badanina, and E. V. Zharkova, Geokhimiya 49(7), 767 (2011) [Geochemistry International 49 (7), 726 (2011)].
K. N. Malitch, N. S. Malitch, O. N. Simonov, et al., Otechestvennaya Geologiya 7(3), 30 (1998) [in Russian].
S. F. Sluzhenikin, “Low Sulfide Platinum Ores in Differentiated Basic-Ultrabasic Intrusions of the Noril’sk Region,” PhD Thesis (IGEM RAS, Moscow, Russia, 2000).
L. J. Cabri and C. E. Feather, “Platinum-Iron Alloys: Nomenclature Based on a Study of Natural and Synthetic Alloys,” Canadian Mineralogist 13, 117–126 (1975).
L. J. Cabri, D. C. Harris, and T. W. Weiser, “Mineralogy and Distribution of Platinum-Group Mineral (PGM) Placer Deposits of the World,” Exploration and Mining Geology 5, 73–167 (1996).
D. C. Harris and L. J. Cabri, “Nomenclature of Platinum-Group-Element Alloys: Review and Revision,” Canadian Mineralogist 29, 231–237 (1991).
Z. Johan, M. Ohnenstetter, E. Slansky, L. M. Barron, and D. Suppel, “Platinum Mineralization in the Alaskan-Type Intrusive Complexes Near Fifield, New South Wales, Australia. 1. Platinum-Group Minerals in Clinopyroxenites of the Kelvin Grove Prospect, Owendale Intrusion,” Mineralogy and Petrology 40, 289–309 (1989).
L. N. Kogarko, V. A. Kononova, M. P. Orlova, A. R. Wooley, Alkaline Rocks and Carbonatites of the World. Part 2: Former USSR (Chapman and Hall, London, UK, 1995).
K. N. Malitch and O. A. R. Thalhammer, “Pt-Fe Nuggets Derived from Clinopyroxenite-Dunite Massifs, Russia: A Structural, Compositional and Osmium-Isotope Study,” Canadian Mineralogist 40, 395–418 (2002).
Binary Alloy Phase Diagrams, vols. 1–2, Ed. by T. B. Massalski, Second Edition (ASM International, Materials Park, Ohio, 1990).
T. Weiser and H.-G. Bachmann, “Platinum-Group Minerals from the Aikora River Area, Papua New Guinea,” Canadian Mineralogist 37, 1131–1145 (1999).
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The article was translated by the authors.
Published in Russian in Doklady Akademii Nauk, 2011, Vol. 440, No. 6, pp. 806–810.
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Malitch, K.N., Kogarko, L.N. Chemical composition of platinum-group minerals from the Bor-Uryakh massif (Maimecha-Kotui Province, Russia). Dokl. Earth Sc. 440, 1455–1459 (2011). https://doi.org/10.1134/S1028334X11100205
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DOI: https://doi.org/10.1134/S1028334X11100205