Chromite and platinum group elements mineralization in the Santa Elena Ultramafic Nappe ( Costa Rica ) : geodynamic implications

Abstract

Chromitites associated with strongly altered peridotite from six distinct localities in the Santa Elena ultramafic nappe (Costa Rica) have been investigated for the first time. Santa Elena chromitites commonly display a compositional variation from extremely chromiferous (Cr/(Cr+Al)=0.81) to intermediate and aluminous (Cr/(Cr+Al)=0.54). This composition… (More)

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