Ralative Abundances of Minor and Trace Elements in Mafic Phases from the Southern Part of the Kohistan Arc
Abstract
Many pyroxenes, granet, hornblende, epidote, biotie, and one each of olivine and chromite from amphibolites, gabbronorites and ultramafic rocks were analysed for up to 21 minor and trace elements. Like major elements, many of these also are systematically distributed between the coexisting mineral pairs and trios. Orthopyroxene contain higher amounts of MnO, Co, Ni, Zn, and lower TiO2, Na2O, Li, Pb, Cr, V, Zr, Sr, Ba, Y, Nd and La as compared to clinopyroxene. Biotite contains more Cr, Cu, Li, Pb, and Ni than pyroxenes and hornblende. The amounts of TiO2, Na2O, K20 Fe203 and Ni are higher in hornblende than in pyroxenes and garnet. Garnet is impoverished in Li, Ni, V and Zn as compared to clinopyroxene and hornblende.
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