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Platinum-group element mineralisation in chromitites from the ultramafic massifs of the Cabo Ortegal Complex

dc.contributor.authorMoreno, T.
dc.contributor.authorLunar, Rosario
dc.contributor.authorPrichard, H.
dc.contributor.authorMonterrubio, Serafín
dc.contributor.authorOrtega, Lorena
dc.description.abstractMany different platinum-group minerals (PCM) have been observed in the chromitites of the Cabo Ortegal complex, one of five Paleozoic ultramafic bodies that crop out in the NW of the Iberian Peninsula. Chomitites are inhomogeneously distributed within the >1100 m-thick serpentinized ultramafic sequence, and can contain up to 13 ppm of total platinum-group elements. Six PCM assemblages are described in these samples including Pt-Pd-sulphides, Pt-Rh alloys, As-, Bi-, Sb- and Te-bearing PGM, PCM enclosed in chromite grains, Hg-, Pb- and Au-bearing PCM and Pt-Pd-bearing oxides. Whereas the PCM enclosed in chromite rims, mostly laurites, are interpreted as being of primary origin, most of the PCM occurring on chromite rims, or distributed within the serpentinized silicates, have complex alteration textures indicating a secondary originen_US
dc.publisherSociedad Geológica de Españaen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subject.otherPlatinum-group mineralsen_US
dc.subject.otherCabo Ortegalen_US
dc.titleMineralización de elementos del grupo del platino (EGP) en las cromititas de los macizos ultramáficos del Complejo de Cabo Ortegalen_US
dc.titlePlatinum-group element mineralisation in chromitites from the ultramafic massifs of the Cabo Ortegal Complexeng

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