湘东龙王排钼多金属矿地质特征及辉钼矿铼-锇同位素定年

Geological Characteristics and Mineralization Age of the Longwangpai Molybdenum-polymetallic Deposit in East Hunan

湘东龙王排钼多金属矿是近年来中外合作勘查发现的具较大找矿潜力的地区。采集龙王排花岗岩体外接触带中的破碎带蚀变岩型钼多金属矿钻孔中的辉钼矿,应用辉钼矿铼-锇同位素法测定,获得了精确的辉钼矿铼-锇等时线年龄为(146.3±1.8)Ma。结果表明,龙王排钼多金属矿区的成矿与隐伏的燕山早期花岗岩浆侵入活动有关,对本地区的地质找矿具有重要的意义。

The Longwangpai molybdenum-polymetallic deposit field in the East Hunan province is a new metallogenic region with great potential, of mineral prospecion discovered through a international project. Authors collected the molybdenites from the drilling holes in the fracture zone-alterated rock type molybdenum- polymetallic Ma, which deposit in exoeontact zone of the Longwangpai granite rock-body. Its isochron age is （ 146.3 ±1.8） related to the Early Yanshanian granite intrusive activities.