Abstract

Geochemical and morphological characteristics of albite, K-feldspar, and white mica from pegmatites in Canada, South Africa, and Europe have been tested for their usefulness as exploration tools for discovering Ta pegmatites. The Ta-Cs relationship in coarse-grained early white mica turns out to be the most informative guide in the first stage of exploration for Ta pegmatites. Albitization of pegmatites often obliterates the primary zonal structure but increases the amounts of recoverable Ta oxides. Therefore, metasomatically albitized pegmatites with both evolved Ta and Cs contents have the most potential as exploration targets.

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