Porphyry and skarn deposits of the Chillagoe mining district, northeast Queensland, Australia, The
The Chillagoe mining district is located in northeast Queensland and hasintermittently produced zinc, lead, silver, copper and gold from porphyry, skarn and carbonate replacement deposits since 1888. To understand the timing and controls on ore deposit formation, I remapped 121km2 of the district, re-logged 40km of core to create eight new cross sections for the four deposits, dated 21 rocks with U-Pb, Re-Os and 40Ar/39Ar geochronology, analysed the whole rock geochemistry of 89 rocks, acquired electron microprobe analyses of skarn and igneous minerals, and analyzed C-O isotope of calcite. The ...
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