摘要
白米坝铜矿位于上扬子中东部铅、锌、铜等成矿带上,成矿地质条件优越。铜矿受地层和构造双重控制,矿体呈似层状、透镜状,主要赋存于三叠系下统飞仙关组上段(T1f2)底部深灰色砂岩中,矿体产状与岩层产状一致。矿石矿物主要为辉铜矿、斑铜矿、黄铜矿,呈稀疏浸染状、星点状分布于砂岩中,具孔雀石化、蓝铜矿化。综合分析该矿床为沉积-热液叠加改造型矿床。
Baimiba Cu deposit is in the middle east metallogenetic zone of Yangzi paraplatform. The geological condition of metallogenesis is good. The metallogenesis is controlled by both strata and structure. The ore body is stratoid,lenticular,mainly in Lower Triassic Feixianguan Formation Upper Member( T1 f2) bottom dark gray sandstone. The occurrence of ore body is consistent with that of the rock bed. The ore minerals are mainly thin dissemination,tiny spots cyprite,bornite,chalcopyrite in the sandstone,malachitized and azuritized. According to the comprehensive analysis,it is a sedimentary hydrothermal superimposition reformation deposit.
出处
《云南地质》
2017年第4期490-494,共5页
Yunnan Geology
关键词
地层-构造控矿
沉积-改造型矿床
云南彝良县白米坝
Ore Control of Strata-Structure
Sedimentation Reformation Deposit
Baimiba
Yiliang
Yunnan
