中国地质2016，Vol.43Issue(5)：1771-1779,9.DOI:10.12029/gc20160525
内蒙古乌拉特中旗图古日格金矿辉钼矿Re-Os同位素年龄及其意义
Molybdenite Re-Os dating of the Tugurige gold deposit, Urad Middle Banner, Inner Mongolia, and its geological significance
摘要
Abstract
Tugurige is a middle-sized gold deposit in Buyant Block, Inner Mongolia. The NW-striking gold-bearing quartz veins penetrate the Late Paleozoic rock mass and Lower Proterozoic Buyant Group. The orebody stably extends along the strike and the dip. The metallic minerals mainly include pyrite, chalcopyrite and galena, whereas the gangue minerals are predominately quartz and calcite. The alteration in the wall rocks includes silicification, sericitization and epidotization. The Re-Os dating of molybdenite samples from gold ore yielded a Re-Os isochron age of (305.6±4.5) Ma with an average of (313.5±4.8) Ma. This implies that the Au and Mo mineralization occurred in Late Carboniferous. The Re content of molybdenites in the Tugurige gold deposit is 42.42×10-6-307.7×10-6, suggesting that the ore-forming material was derived mainly from a mixed source of crust and mantle.关键词
Re-Os同位素/成矿年龄/图古日格金矿/乌拉特中旗/内蒙古Key words
Re-Os isotopes/metallogenic ages/Tugurige gold deposit/Urad Middle Banner/Inner Mongolia分类
天文与地球科学引用本文复制引用
张锋,李志丹,王佳营,陈军强,文思博,李超,邵国钰,赵宇川,俞礽安..内蒙古乌拉特中旗图古日格金矿辉钼矿Re-Os同位素年龄及其意义[J].中国地质,2016,43(5):1771-1779,9.基金项目
中国地质调查项目（12120113057300；12120113057400）及国家自然科学基金项目（41502082）联合资助。 （）
