, Volume 432, Issue 1, pp 598-601
Date: 22 May 2010

The first finds of rhenium minerals in Karelia

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Abstract

Rhenium is one of the rarest elements of the earth crust (abundance ratio 0.7 mg/t). In the Karelian region, Re and accompanying Os were discovered in a copper-molybdenum-porphyry ore formation, represented by the Lobash deposit, the Jalonvaara occurrences etc., and in a noble-metal-Cu-U-vanadium ore formation (Padma Group occurrences). Molybdenites from the above deposits are enriched in Re and Os (Lobash: 13–187 g/t Re, 0.4–6 g/t Os). So far, however, no rhenium minerals proper have been revealed in the Karelian deposits and occurrences of the above formations or elsewhere. As a result of the microprobe study of mineral assemblages of cupreous sandstones from the Voronov Bor deposit (bornite ore) and sulphide-copper-nickel ore from the Rybozero deposit, osmium-cupreous rheniite (Re, Cu, Os, Fe)1S2 that contains 56.53–60.25% Re, 4.61–10.99% Cu, 1.52–3.77% Os and up to 4.75% Fe was revealed and studied for the first time.

Published in Russian in Doklady Akademii Nauk, 2010, Vol. 432, No. 1, pp. 94–98
Presented by Academician D.V. Rundkvist June 4, 2009
The article was translated by the authors.