|
The Yellowknife Mining District produced over 13 million ounces of gold from the Campbell and Giant shear zones. The mineralization in the Yellowknife Mining District occurred in altered mafic volcanic of the Yellowknife Greenstone belt that have been intruded by feldspar porphyry and mafic dykes. The gold mineralization occurs as cross-cutting, en echelon bodies within north trending, steeply dipping (70) shear zones that exhibit weak to strong sericite-quartz-carbonate alteration. The mineralized zones within the shear zones have maximum dimensions of up 150 metres long, range from 1 to 25 metres in width and have a maximum depth extent of 400 metres. The gold can be either free milling or refractory, exhibits a strong arsenic geochemical signature and exhibits a pyrite-pyrrhotite-arsenopyrite-spalerite-galena-chalcopyrite mineral association. |
