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位于贵州省遵义县境内的后槽铝土矿区,面积12平方公里,于1981年11月由我队发现。1982年至1984年详查,完成1:2000地质填图12平方公里;探槽20799.9立方米;浅井837.6米;竣工钻孔63个,投入钻探工作量5113米。对该矿区范围内,原则上按100或200米间距进行地表工程揭露和以200×200或400×200米的网度布设普查钻孔,进行远景控制和详查评价。求获C+D级铝土矿石储量3071万吨,其中C级储量135万吨,占C+D级储量的4％;低铁低硫型铝土矿储量1901万吨,占总储量的62％。并对与铝土矿共生的黄铁矿以及伴生有益组分镓等也作了综合评价,获得黄铁矿远景储量100万吨,初步查明镓的平均品位为0.009％。镓的地质储量达2763.9吨,从而提高了矿床综合利用的经济价值。
Located in Zunyi County, Guizhou Province, back-slot bauxite mining area of 12 square kilometers, in November 1981 by our team found. Detailed investigation from 1982 to 1984, completion of 1: 2000 geological mapping of 12 square kilometers; exploration trench 20799.9 cubic meters; shallow well 837.6 meters; borehole completion of 63, into the drilling workload of 5113 meters. Within the scope of this mining area, surface engineering exposures at 100 or 200 meters spacing and census drilling at 200 × 200 or 400 × 200 meters shall be conducted in principle for long-distance control and detailed evaluation. C + D grade bauxite ore reserves of 30.71 million tons, of which Class C reserves 1.35 million tons, accounting for C + D grade reserves of 4%; low iron and low sulfur bauxite reserves of 19.01 million tons, accounting for the total reserves 62%. The pyrite with symbiosis with bauxite and associated gallium are also evaluated comprehensively. The long-term reserves of pyrite are 1 million tons and the average grade of gallium is ascertained to be 0.009%. Geological reserves of gallium up to 2763.9 tons, thereby increasing the economic value of comprehensive utilization of the deposit.