| | Journal (article/letter/editorial) | for Geosciences and Natural Resources, Stilleweg 2, D-30655 Hannover, Germany e-mail: torsten.graupner@bgr...schutte@gmail.com © 2017 March Geological Society of South Africa Abstract Tantalum is an important metal...Kamativi Belt (Zimbabwe) and the Jos Plateau (Nigeria); Ÿ Mn-rich columbite-tantalite is typical of the...Arabian-Nubian Shield (Egypt, Ethiopia) and the Tantalite Valley pegmatites (southern Namibia) and Ÿ Large...Large compositional variations through Fe-Mn fractionation, followed by Nb-Ta fractionation are typical |
|