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The Browns polymetallic ore deposit is a large ore deposit located at Mount Fitch, near Batchelor, 64 kilometres south of Darwin, Northern Territory, Australia. The Browns deposit consists of a sizeable, +80 million tonne deposit of nickel-copper-cobalt, with some poorly defined zones of uranium, and extensive zones of lead-zinc mineralization having been discovered in recent years. ==Geology== The Browns deposit has a quoted JORC resource of 84 million tonnes of ore grading 0.78% copper, 0.11% cobalt and 0.12% nickel. This is a global resource hosted in four separate zones; # Browns (40Mt @ 0.49% Cu, 4.53% Pb, 0.109% Co, 0.09% Ni, 13ppm Ag) # Browns East (30.5Mt @ 1.29% Cu, 1.28% Pb, 0.13% Co, 0.13% Ni, 11ppm Ag) # Area 55 (12.2Mt @ 0.49% Cu, 0.56% Pb, 0.14% Co, 0.14% Ni) # Mount Fitch (1.3Mt @ 0.60% Cu, 0.2% Co, 0.2% Ni) The global resources are subdivided into ''oxide'' and ''sulfide'' resources. The oxide resources consist of supergene or weathered sulfide ore where the ore mineralogy is dominated by metal oxides, hydroxides, clays and carbonates after the original sulfide mineralogy. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Browns polymetallic ore deposit」の詳細全文を読む スポンサード リンク
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