Abstract
A mineral assemblage with nisbite NiSb2 and breithauptite NiSb unique for a Mesozoic (Sn)–Pb–Zn vein deposit is found during mineralogical–geochemical study of deep horizons of the Yuzhnoe deposit. In addition to Ni antimonides, this assemblage includes nonstoichiometric Ag sulfoantimonide of variable composition (mineral X), pyrrhotite II, gudmundite II, Ag-bearing chalcopyrite, and stannite II. Nisbite and breithauptite form fine myrmekitic aggregates with pyrrhotite II at the boundary of various early ore minerals. In most cases, these aggregates are confined to the contact between pyrrhotite I and galena. The formation of ultramicroscopic myrmekitic aggregates in galena–sphalerite–pyrrhotite ores is related to ore recrystallization in a thermal fluid field of postore leucogranitic intrusion. New data significantly expand the temperature stability range of assemblages with Ni antimonides.
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Translated by I. Melekestseva
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Ratkin, V.V., Simanenko, L.F., Gonevchuk, V.G. et al. The Ni–Antimonide Mineral Assemblage: A Product of Recrystallization of Sn–Pb–Zn Ores of the Yuzhnoe Deposit, Sikhote-Alin, Russia. Dokl. Earth Sc. 492, 317–319 (2020). https://doi.org/10.1134/S1028334X20050190
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DOI: https://doi.org/10.1134/S1028334X20050190