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8167390 
Journal Article 
Geology of the Mount Isa Inlier and environs, Queensland and Northern Territory 
Blake, DH 
1987 
225 
English 
Three broad tectonic divisions are distinguished within the Mount Isa Inlier: the Western Fold Belt, Kalkadoon-Leichhardt Belt, the Eastern Fold Belt. These are formed of early and middle Proterozoic sedimentary and volcanic rocks many thousands of metres thick, which are assigned to four major sequences, and numerous igneous intrusions. Correlatives to the northwest are exposed within and around the younger Proterozoic South Nicholson Basin and along the Murphy Tectonic Ridge. The Mount Isa Inlier contains major deposits of copper, lead, zinc and silver, and significant deposits of gold, uranium and cobalt; it has also produced minor amounts of manganese, cadmium, bismuth, tungsten, beryl, and mica. Most copper occurs in brecciated sediment-hosted deposits within the Western Fold Belt, but there are also numerous small shear and fault-controlled vein copper deposits to the east; most of the gold production has come as a by-product from these veins. Large stratiform lead-zinc-silver ores are hosted in shales, such as at Mount Isa mine.-from Author