Utilize este identificador para referenciar este registo: http://hdl.handle.net/10362/4494
Título: Zonal distribution of gold and platinium group elements in the Mondunguara deposits Mozambique
Autor: d'Orey, F. L. C.
Palavras-chave: Mozambique
Platinum group elements
Data: 1992
Resumo: The Mondunguara copper mines are situated in mountainous terrain in west-central Mozambique. The mineralization consists of chalcopyrite, pyrrhotite, common pcntlandite, cobaltpentlandite, pyrite and several minor oxides and sulphides in tabular ore bodies deeping steep to the north. Gold was known to occur in small quantities but no systematic sampling and analysis for precious clements was ever done. Mineralogical and geological evidence has shown that the ores are magmatic in origin and were derived from gabbro-peridotitic magma dykes saturated in sulphides when intruded. The ore bodies show a clear zonation. Platinum group elements as well as pure gold are associated with high temperature hexagonal pyrrhotite. This pyrrhotite being of no use is generally discarded to the tailing dumps. Late hydrothermal phases are enriched in native silver, silver tellurides as well as electrum.
URI: http://hdl.handle.net/10362/4494
Aparece nas colecções:FCT: DCT - Ciências da Terra

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