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Platinum-group elements (PGE) and their principal carriers in metal-rich black shales: An overview with a new data from Mo-Ni-PGE black shales (Zunyi region, Guizhou Province, south China)
Czech Geological Survey.
Department of Applied Geosciences and Geophysics, University of Leoben.
University of Barcelona.ORCID iD: 0000-0002-1298-0320
Czech Geological Survey.
2013 (English)In: Journal of Geosciences, ISSN 1802-6222, E-ISSN 1803-1943, Vol. 58, no 3, p. 213-220Article in journal (Refereed) Published
Abstract [en]

Lower Cambrian Mo–Ni sulfidic black shales from the Huangjiawan mine (Guizhou Province, south China) have anomalousplatinum-group elements (PGE) concentrations (up to ~1 ppm in total). In order to identify principal PGE carriers,we used heavy mineral separates which were produced by innovative hydroseparation techniques. Subsequent detailedmineralogical study using electron microprobe did not result in the identification of discrete platinum-group minerals.Pyrite (grainy, not framboidal), millerite and gersdorffite that were found in our heavy concentrate were analyzed forPGE and Re. We found that they contain the following concentrations of PGE and Re: pyrite (up to 490 ppm Pt, 390ppm Pd and 220 ppm Rh), millerite (up to 530 ppm Pt, 430 ppm Pd and 190 ppm Rh) and gersdorffite (up to 410 ppmPt and 320 ppm Pd; no Rh detected). Rhenium was detected only in grainy pyrite (up to 1060 ppm). It was found thatdespite anomalous PGE concentrations, the Mo–Ni black shales do not contain any platinum-group minerals and thatthe PGE are bound to pyrite and Ni-sulfides (millerite and gersdorffite).

Place, publisher, year, edition, pages
2013. Vol. 58, no 3, p. 213-220
National Category
Geochemistry Geology
Research subject
Applied Geochemistry
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URN: urn:nbn:se:ltu:diva-68080DOI: 10.3190/jgeosci.147OAI: oai:DiVA.org:ltu-68080DiVA, id: diva2:1193530
Available from: 2018-03-27 Created: 2018-03-27 Last updated: 2018-05-31Bibliographically approved

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CiteExportLink to record
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