Abstract
Eleven native minerals and intermetallic alloys were identified in rocks of the banded iron formation (BIF) in the Kola Peninsula: copper, silver, gold, electrum, auricupride, cuproauride, tetraauricupride, bismuth, sulfur, tellurium, and graphite. Graphite is a common mineral of sulfide-bearing BIF and gneiss. Sulfur occurs in supergene-altered sulfide-bearing BIFs together with Fe- and Ca-sulfates. Gold of low fineness (electrum) in association with electrum, acanthite, auricupride, volynskite, hessite, cervelleite, pavonite, petzite, and bismuth is related to the areas of hydrothermally altered skarnoids with greenalite, chamosite, aegirine, and Na-Ca amphibole. Redeposited gold of high fineness associated with auricupride, hessite, silver, electrum, kostovite, cuproauride, tetraauricupride, and sperrylite occurs in low-temperature zonal hydrothermal segregations hosted in aluminous gneiss and which formed under the effect of alkalized, highly siliceous solutions at the regressive stage of BIF metamorphism.
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Original Russian Text © A.V. Bazai, G.Yu. Ivanyuk, Ya.A. Pakhomovsky, P.M. Goryainov, V.N. Yakovenchuk, 2009, published in Zapiski RMO (Proceedings of the Russian Mineralogical Society), 2009, Pt. CXXXVII, No. 5, pp. 34–47.
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Bazai, A.V., Ivanyuk, G.Y., Pakhomovsky, Y.A. et al. Native elements in rocks of the banded iron formation, Kola Peninsula. Geol. Ore Deposits 51, 525–536 (2009). https://doi.org/10.1134/S1075701509070022
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DOI: https://doi.org/10.1134/S1075701509070022