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卡林金矿带原勘查深度多在100—300米以上,属低品位、大吨位沉积岩容矿的微细浸染型金矿。1987年以来美国巴里克资源公司(属加拿大的)和美国纽蒙特金矿公司在内华达卡林金矿带的波斯特(Post)矿区执行深钻计划,打了一些深钻孔,在矿区深部发现了高品位、大吨位的深部波斯特一贝茨(Deep Post-Betze)硫化物金矿床,纽蒙特公司有一个终孔深度为623米的钻孔在389米往下打到了143米平均品位32克/吨的金矿石。
Carlin gold exploration depth of the original more than 100-300 meters above sea level, is a low-grade, large-tonnage sediment-hosted fine disseminated gold mine. Deep drilling was carried out by Barrick Resources (of Canada) and Newmont Gold Corporation of the United States in the Post mining area of the Carlin Gold Belt in Nevada since 1987, with some deep boreholes found deep in the mine High-grade, large-tonnage deep Deep Post-Betze sulfide gold deposit, Newmont has a hole with a final hole depth of 623 meters hitting an average grade of 143 meters at 389 meters down to 32 G / ton of gold ore.