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Behavior of noble metals upon fractional crystallization of copper-rich sulfide melts

  • Geochemistry
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Abstract

Joint behavior of Pt, Pd, Au, As, Bi, Te, and Sn upon fractional crystallization was studied in a melt of cubanite composition with the following admixtures (mol %): Fe, 33.20; Cu, 16.55; S, 50.03; Pt, 0.03; Pd, 0.02; Au, 0.02; As, 0.02; Bi, 0.03; Te, 0.02; Sn, 0.08. The crystallized sample consisted of three zones: (I) a pyrrhotite solid solution POSS; (II) an isocubanite ICB; (III) a multiphase mixture. The behavior of admixtures was studied in the first and second zones. It was shown that pyrrhotite did not contain admixtures of noble metals and accessory elements, whereas Sn was dissolved in cubanite. Other admixtures occurred in the second zone as multiphase inclusions. PdBi х Te1–х , PtBiS3–δ, CuPtBiS3, Bi2S3–х , Au, Pt(As,S)2, (Pt,Pd)S, (Pt,Pd)(Bi,Te)2–x , and PdBi2 were the most abundant phases.

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Authors and Affiliations

  1. Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences, Staromonetny per. 35, Moscow, 119017, Russia

    V. V. Distler

  2. Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, Akad. Koptyuga pr. 3, Novosibirsk, 630090, Russia

    E. F. Sinyakova

  3. Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Akad. Lavrentieva 3, Novosibirsk, 630090, Russia

    V. I. Kosyakov

Authors
  1. V. V. Distler
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  2. E. F. Sinyakova
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  3. V. I. Kosyakov
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Correspondence to V. V. Distler.

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Original Russian Text © V.V. Distler, E.F. Sinyakova, V.I. Kosyakov, 2016, published in Doklady Akademii Nauk, 2016, Vol. 469, No. 4, pp. 461–464.

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Distler, V.V., Sinyakova, E.F. & Kosyakov, V.I. Behavior of noble metals upon fractional crystallization of copper-rich sulfide melts. Dokl. Earth Sc. 469, 811–814 (2016). https://doi.org/10.1134/S1028334X1608002X

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  • DOI: https://doi.org/10.1134/S1028334X1608002X

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