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伟晶状红柱石矿床,产于中元古界小寨沟组下段,含石榴石、十字石炭质黑云母片岩和炭质黑云母石英片岩中.矿体呈层状、透镜状,共有六层,具有一定层位.矿体中红柱石晶体粗大,有的长达30cm,横断面直径达5-7cm,各晶体均沿片理面定向排列.矿区内未见花岗岩体出露,矿区外围虽有花岗岩体分布,但距离矿体很远,矿体并不受岩体接触带控制.根据矿体形状、产状特征,红柱石矿床是在区域变质过程中,由于变质热液的参加,使铝土质岩层发生重组合和重结晶作用而形成了伟晶状红柱石矿床.
The crystallite andalusite deposit is produced in the Lower Member of the Xiaozhaigou Formation in the Middle Proterozoic. It contains garnet, stauromitic biotite schist and carbonaceous biotite quartz schist. The orebodies are lamellar and lenticular in six layers. , Has a certain horizon. The andalusite crystals in the ore body are coarse, some as long as 30cm, the cross-sectional diameter of 5-7cm, the crystals are arranged along the schistosomion orientation. No granite body exposed in the mining area, although the periphery of the mining area There are granite bodies distributed, but far from the ore body, the ore body is not controlled by the rock body contact zone. According to the ore body shape, occurrence characteristics, the andalusite deposit is in the process of regional metamorphism, due to the participation of metamorphic hydrothermal fluid, so that 5. The recrystallization and recrystallization of the bauxite rock formed a crystallite andalusite deposit.