Postmagmatic evolution of platinum-group and base-metal mineral assemblages in Palaeozoic ophiolitic chromitites from the Dobromirtsi massif, Rhodope Mountains (SE Bulgaria)

Jose Maria Gonzalez-Jimenez, F Gervilla, T Kerestedjian, J.A. Proenza

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

The distribution of platinum-group and base-metal minerals in the metamorphosed ophiolitic chromitites of the Dobromirtsi ultramafic massif (Rhodope Mountains, SE Bulgaria) show that in the altered zones of chromites and in the silicate matrix between chromite grains, there is an increase in the proportion of Ni-rich, S-poor sulphides and As-rich minerals, relative to the unaltered zones of the chromite. This distribution is interpreted in terms of postmagmatic evolution of the chromitites: Ocean-floor metamorphism followed by hydrothermal alteration, associated with greenschist-amphibolite facies regional metamorphism causing S leaching followed by supply of additional S, As and minor Sb and Sn.
Original languageEnglish
Title of host publicationDigging Deeper
Subtitle of host publicationProceedings of the 9th Biennial SGA Meeting
Place of PublicationIreland
PublisherIrish Association for Economic Geology
Pages889-892
Number of pages4
Publication statusPublished - 2007
Externally publishedYes
EventBiennial Meeting of the Society for Geology Applied to Mineral Deposits - Dublin, Ireland
Duration: 20 Aug 200723 Aug 2007

Conference

ConferenceBiennial Meeting of the Society for Geology Applied to Mineral Deposits
CityDublin, Ireland
Period20/08/0723/08/07

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    Gonzalez-Jimenez, J. M., Gervilla, F., Kerestedjian, T., & Proenza, J. A. (2007). Postmagmatic evolution of platinum-group and base-metal mineral assemblages in Palaeozoic ophiolitic chromitites from the Dobromirtsi massif, Rhodope Mountains (SE Bulgaria). In Digging Deeper: Proceedings of the 9th Biennial SGA Meeting (pp. 889-892). Ireland: Irish Association for Economic Geology.