Distribution of platinum-group minerals in ophiolitic chromitites

José María González-JiménezDepartamento de Mineralogía y Petrología-IACT, Universidad de Granada-CSIC, Avda. Fuentenueva s/n, 18002Granada, Spain

Fernando GervillaDepartamento de Mineralogía y Petrología-IACT, Universidad de Granada-CSIC, Avda. Fuentenueva s/n, 18002Granada, Spain

Joaquín A. ProenzaDepartament de Cristal·lografia, Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona, Martí i Franquès, s/n, 08028, Barcelona, Spain

Thierry AugéBRGM (Bureau de Recherches Géologiques et Minières), Mineral Resources Division, 3 avenue Claude-Guillemin, B.P. 36009, 45060Orleans, France

Thomas KerestedjianGeological Institute Bulgarian Academy of Sciences, 24 Georgi Bonchev Str., 1113Sofia, Bulgaria

Abstract

This paper reviews the distribution of platinum-group minerals in ophiolitic chromitites. Our data and literature data, obtained by in-situ investigation of polished sections and techniques of mechanical separation [hydroseparation (HS), or combining electric pulse disaggregation (EPD) plus HS], are contrasted. Finally, in-situ textural data are used as platform criteria to compare the different proposed models that attempt to explain the origin of the platinum-group mineral assemblages found in ophiolitic chromitites.

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Distribution of platinum-group minerals in ophiolitic chromitites

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Distribution of platinum-group minerals in ophiolitic chromitites

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