云南普洱市大平掌铜矿成矿规律及找矿研究

A STUDY ON THE METALLOGENESIS RULE AND PROSPECTING OF DAPINGZHANG CU DEPOSIT IN PUER,YUNNAN

云南普洱市大平掌铜矿属火山块状硫化物矿床(VMS),其成矿地质体为火山机构、及火山岩-次火山岩建造;成矿构造为火山喷发带火山岩与次火山岩体接触面;成矿结构面是火山岩与火山沉积岩界面;矿体具“上层下脉”的双层结构特征,矿石的金属矿物为铜-铅-锌-金-银矿物组合,矿化及蚀变具明显的分带性。通过研究其成矿作用特征,认为大平掌矿区深部及外围具有寻找隐伏矿的潜力。

Dapingzhang Cu deposit is a volcanic massive sulfide deposit(VMS).The metallogenesis geological body is volcanic mechanism and volcanic rock-subvolcanic rock formation,the metallogenesis structure is the contact of volcanic rock and subvolcanic rock of volcanic eruption zone,the metallogenesis texture surface is the boundary between volcanic rock and volcanic deposit rock.The orebody feature is“upper bedded lower veined”.The metallic mineral of ore is the assemblage of Cu-Pb-Zn-Au-Ag mineral.The zonation of metallogen-esis and alteration is clear.According to the study of metallogenesis feature,we think there is the potentiality of buried orebody prospecting in the deep and surrounding area of Dapingzhang orefield.