Geochemistry of altered basalts (continental tholeiites) and associated copper deposits
Copper concentrations occur in the upper part of an altered sequence of continental tholeiites and continental rhyolites in the Warburton area. The copper mineralisation consists mainly of chalcocite-djurleite within faults in hematite-rich rocks. The alteration mineral assemblages in the basalts consist of varying amounts of albite-chlorite-epidote-quartz-hematiteprehnite- pumpelleyite-montmorillonite. These are the result of basalt alteration at 200° to 400°C by a nearsurface hot...[Show more]
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