青海省东昆仑洪水河东地区斑岩铜钼矿找矿潜力分析

洪水河东地区岩浆活动强烈,石英闪长斑岩、英云闪长斑岩较发育,岩体、围岩及其接触带绿泥石化、绿帘石化、碳酸盐化、钾长石化、高岭土化、迪开石化、绢云母化和矽卡岩化等蚀变普遍且较强烈,具斑岩型矿化蚀变特征。研究区内Cu、Mo、W化探组合异常分布较多,具备典型的斑岩铜矿床的元素组合特征,岩体含矿性与化探异常吻合,且在研究区盘羊沟、乌腊德地区发现了铜钼矿体。据此分析,认为洪水河东地区具备斑岩铜钼矿成矿地质条件,斑岩型铜钼矿找矿潜力较大。

Prospecting Potential Analysis of Porphyry Cu-Mo Deposit of East Hongshui River in Eastern Kunlun in Qinghai Province

In the east of Hongshui River, there was an intense magmatic activity and it aevetops into a se- ries of quartzdiorite porphyrite and tonaliteporphyrite. The alteration characteristics of porphyry mineral- ized, such as chloritization, epidotization, carbonatization, potash feldspathization, kaolinization, dican- ization, sericitization and skarnization, are commonly developed in the intrusion , wallrock and their con- tact zone. In this area, there are broad Cu, Mo, W geochemical composite anomalies, which are the typi- cal elements assemblage of porphyry copper deposits. Moreover, the ore-bearing bodies are able to corre- late the geochemical anomalies and we have found the Panyanggou and Wulade Cu-Mo ore bodies. So, eastern of Hongshui River has the ore-forming geological conditions of Porphyry Cu-Mo Deposit and there is a big potential for porphyry copper-molybdenum.