Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/18425
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dc.contributor.authorZaccarini, F.-
dc.contributor.authorPushkarev, E.-
dc.contributor.authorGaruti, G.-
dc.date.accessioned2009-11-10T11:14:02Z-
dc.date.available2009-11-10T11:14:02Z-
dc.date.issued2008-01-
dc.identifier.citationOre Geology Reviews 33(1): 20-30 (2008)en_US
dc.identifier.issn0169-4332-
dc.identifier.urihttp://hdl.handle.net/10261/18425-
dc.description11 pages, 8 figures, 5 tables.en_US
dc.description.abstractWe report the results of investigation of chromitites occurring in the Kluchevskoy ophiolite complex of the Russian Urals. The chromite composition suggests crystallization from a boninitic magma in a supra-subduction zone geodynamic setting. The investigated chromitites are enriched in Os–Ir–Ru over Rh–Pt–Pd, as typical of the mantle hosted ophiolite chromitites. Consistent with the geochemical data, the Platinum Group Mineral (PGM) assemblage is dominated by Ru–Os–Ir phases, whilst specific Rh–Pt–Pd minerals are absent. Two distinct paragenetic assemblages have been recognized: 1) primary magmatic PGM (laurite, erlichmanite, osmium, iridium, unnamed Ir–Ni–S, cuproiridsite, irarsite and ruthenarsenite) and 2) secondary PGM formed by desulfurization of primary sulfides at low temperature (ruthenium). Comparison of the studied chromitites with those hosted in the mantle of the Kempirsai, Ray–Iz and Voikar–Sininsky ophiolites has shown that all these chromite deposits form in the same geodynamic environment. The differences in the temperature calculated on the Fe–Mg exchange between olivine–spinel and observed in the PGM assemblage suggest that the Kluchevskoy chromitite suffered the effects of the metasomatism to a lesser extent compared with Kempirsai and Ray–Iz chromitites.en_US
dc.description.sponsorshipF.Z. is grateful to the Austrian Science Fund (FWF Lise Meitner fellowship) for the possibility to spend two years at the University of Leoben (Austria). The comments by J. Andersen, S. Arai, M. Economou and K. Kojonen are greatly appreciated. The suggestions and careful editing of N.J. Cook are gratefully acknowledged. The Russian grant to E. P. (RFBR 06-05-64795-à) is thanked.en_US
dc.format.extent13824 bytes-
dc.format.mimetypeapplication/vnd.ms-excel-
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsclosedAccessen_US
dc.subjectPlatinum group mineralsen_US
dc.subjectPlatinum group elementsen_US
dc.subjectChromititesen_US
dc.subjectKluchevskoyen_US
dc.subjectUralsen_US
dc.subjectRussiaen_US
dc.titlePlatinum-group element mineralogy and geochemistry of chromitite of the Kluchevskoy ophiolite complex, central Urals (Russia)en_US
dc.typeartículoen_US
dc.identifier.doi10.1016/j.oregeorev.2006.05.007-
dc.description.peerreviewedPeer revieweden_US
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.oregeorev.2006.05.007en_US
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairetypeartículo-
item.fulltextNo Fulltext-
item.grantfulltextnone-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
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