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Platinum deposits of Ethiopia

ContributorsMolly, Emile-W.
Published inEconomic geology, vol. 54, p. 467-477
Publication date1959
Abstract

The platinum deposit of Yubdo (Wallaga Province), in western Ethiopia, is of the same type of those of the Urals. It shows a dunitic core surrounded concentrically by pyroxenites and by gabbros. This arrangement of increasing basic character toward the center is typical of the Urals deposits. The Yubdo deposit, however, shows one particular feature, the capping of the dunites by "birbirites" which consist essentially of secondary silica and limonite, and are derived from the dunites through alteration and concentration processes. The primary mineralization is not mined because of the very low platinum content of the dunites and birbirites. The capping eluvium has been worked for the past thirty years in a fairly primitive fashion, and it is largely exhausted. On the other hand, the alluvium of the present and of former beds of the Birbir river, occurring downstream from the deposit, and which have been left intact because of their position below the hydrostatic level, seems to offer fairly notable possibilities.

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Citation (ISO format)
MOLLY, Emile-W. Platinum deposits of Ethiopia. In: Economic geology, 1959, vol. 54, p. 467–477.
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  • PID : unige:158529
ISSN of the journal0013-0109
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