AUTHORS: Frimmel, H. E.
ABSTRACT: The analysis of gold production data as well as reserve and resource estimates for different genetic types of gold deposits revealed that the Witwatersrand palaeoplacer and orogenic deposits account for almost 80% of all known gold. Most of the gold has been added to the continental crust as early as 3.0 Ga. About half of that gold has been recycled repeatedly on a lithospheric scale, predominantly by plate-tectonically induced magmatic and hydrothermal fluid circulation. The overall proportion of known gold bound in ore bodies corresponds to that of gold that is dissolved in modern crustal fluids.
KEYWORDS: gold, deposit types, lithospheric recycling, Archaean
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