Platinum-group minerals (PGM) occur as discrete inclusions in the chromite and in the associated silicates. Textural considerations suggest that the PGE chalcogenides with S and As were formed in the high-temperature magmatic stages, as part of the chromite precipitation event (primary PGM), in contrast with the native PGE, which originated during the low-temperature serpentinization of the ultramafic host of the chromitites (secondary PGM) (Torres-Ruiz, et al., 1996).
- Garuti, G., Gazzotti, M., and Torres-Ruiz, J. (1995) Iridium, rhodium, and platinum sulfides in chromitites from the ultramafic massifs of Finero, Italy, and Ojen, Spain. Canadian Mineralogist: 33: 509-520.
- Torres-Ruiz, J., Garuti, G., Gazzotti, M., Gervilla, F., and Hach-Alí, P.F. (1996) Platinum-group minerals in chromitites from the Ojen Iherzolite massif (Serrania de Ronda), Betic Cordillera, southern Spain. Mineralogy and Petrology: 56: 25-50.
Mineral ListMineral list contains entries from the region specified including sub-localities
37 entries listed. 29 valid minerals. 1 type locality (valid mineral).
Localities in this Region
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
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New Locality Added: Pougamaro River placers, Pala, Mayo-Kebbi Ouest Region, ChadFrom David Von Bargen, 21st May 2013 14:05:47