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大顶山盲锡矿位于康滇地轴北段泸沽花岗岩体系南侧,锡铁矿体呈似层状、透镜状赋存于北东走向的前震旦系登相营群轴向为275°—295°的次级褶皱地段。矿体地表为磁铁矿,向深部渐变为锡铁盲矿体。本文取赋矿大理岩层的顶、底板海拔标高,以及经过数据处理后的矿体厚度作趋势分析,预测赋矿部位在岩层较厚处的次级向斜轴部附近,并对此成果作了地质解释。
The Blind Tin Mine of Dadingshan Mountain is located on the south side of the Lugu granitoid system in the northern part of the axis of the Kangdi-Dian. The tin-iron ore body is stratified, and the lens-shaped Predeposit Sinian Dengsaiying group is 275 ° -295 ° secondary folds. The surface of the ore body is a magnetite, gradually changing into a tin-iron blind orebody. In this paper, taking the top elevation and the bottom elevation of the marbled strata as an example, the tendency of the thickness of ore body after data processing is analyzed, and the ore-bearing part is predicted to be near the secondary synclinal axis of the thicker strata. Geological explanation.