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Covellite of the Semenov-2 hydrothermal field (13°31.13′ N, Mid-Atlantic Ridge): enrichment in trace elements according to LA ICP MS analysis

Melekestseva, IY, Maslennikov, VV, Maslennikova, SP, Danyushevsky, LV ORCID: 0000-0003-4050-6850 and Large, R 2017 , 'Covellite of the Semenov-2 hydrothermal field (13°31.13′ N, Mid-Atlantic Ridge): enrichment in trace elements according to LA ICP MS analysis' , Doklady Earth Sciences, vol. 473, no. 1 , pp. 291-295 , doi: 10.1134/S1028334X17030060.

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Abstract

As a result of LA ICP MS analysis of sulfides of the Semenov-2 hydrothermal field, it is established that covellite, which replaces Zn sulfides, is enriched in most trace elements. The Ga, Ni, and In contents in it do not vary, whereas Mn, Co, and Cd are lower than in sphalerite. The distribution of trace elements in covellite, which replaces Cu–Fe sulfides, is distinct: it is enriched in Cd, Sb, Pb, and Bi, whereas the contents of other elements are either lower or invariant. Covellite, which replaces Zn sulfides, is enriched in all trace elements relative to that replacing Cu–Fe sulfides. Enrichment of covellite in trace elements relative to primary sulfides was favored by oxidation of the hydrothermal fluid by seawater, which is similar to the processes of submarine oxidation of ancient massive sulfide deposits. Covellite is also a host to invisible gold and silver in ores of the Semenov-2 field along with toxic elements such as As, Se, Te, Tl, and Cd.

Item Type: Article
Authors/Creators:Melekestseva, IY and Maslennikov, VV and Maslennikova, SP and Danyushevsky, LV and Large, R
Keywords: mid-Atlantic ridge, Atlantic Ocean, LA ICP MS, sulfides, Semenov-2 hydrothermal field, covellite
Journal or Publication Title: Doklady Earth Sciences
Publisher: Interperiodica
ISSN: 1028-334X
DOI / ID Number: 10.1134/S1028334X17030060
Copyright Information:

© Pleiades Publishing, Ltd., 2017.

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