摘要
利用SD法资源储量估算软件构建了千鹅冲钼矿床M-Ⅰ、M-Ⅱ、M-Ⅲ号钼矿体的勘查工程数据库,共包括6条勘探线155个勘查工程。根据千鹅冲钼主矿体形态简单(呈巨厚层状、似透镜状)规模大,连续性好,成矿后基本无构造破坏,矿体厚度稳定,钼品位变化较均匀等特征确定该矿床属第I勘探类型,并以160m×160m的工程间距利用SD法估算了3个矿体的资源量。由于矿体主要为隐伏矿体,本次估算主要利用详查阶段的21个钻孔共3 104个单工程样品数据进行。估算结果显示矿区(332)+(333)资源储量已达特大型(总矿石量73 676万t,钼金属量600 092t,钼平均品位0.081%)。在此基础上,对比了传统垂直剖面法估算结果,两者误差4.57%。实践证明,SD法具有提高勘查报告的质量和进一步指导矿产勘查工作的作用。
In this paper,we used SD method to constructed the exploration database for M-Ⅰ,M-Ⅱ and M-Ⅲ molybdenum ore-bodies of Qian′echong Mo deposit and considered it as the I type of exploration according to the characteristics of Qian′echong molybdenum main orebody.Based on the engineering spacing of 160m×160mand 3 104 single engineering samples from 21 drillings,the resource reserves estimation show that the three ore bodies have(332)+(333)ore reserves of 736.76 million tons,molybdenum metal reserves of 60 092 tons and molybdenum average grade of 0.081% which have an error of 4.57% comparing the traditional vertical section method.Thus,SD method has the effect of improving the quality of prospecting reports and further guiding mineral prospecting work.
引文
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