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内蒙古化德县三胜钨钼矿床位于华北陆块北缘,为岩浆期后中高温热液型矿床。采用辉钼矿Re-Os同位素分析获得辉钼矿的模式年龄加权平均值为138±1Ma,等时线年龄为138.6±1.4Ma,推测三胜钨钼矿床的形成时代为燕山晚期,这与区域上华北陆块北缘主要金属矿床的形成年龄吻合。辉钼矿的Re含量平均值为0.5548×10~(-6),表明其主要为地壳来源特征。成矿发生在陆内构造环境,为燕山期大规模构造-岩浆作用的产物。
The Sesheng tungsten-molybdenum deposit in the Hude County, Inner Mongolia is located in the northern margin of the North China Block and is a post-magmatic epithermal deposit. The molybdenite molybdenum molybdenite molybdenite molybdenite by age-weighted average was 138 ± 1Ma, the isochron age was 138.6 ± 1.4Ma, suggesting that the formation of the Sansheng tungsten-molybdenum deposit is late Yanshan, which is consistent with the region The formation age of the main metal deposits in the northern margin of North China continent coincides with each other. The average Re content of molybdenite is 0.5548 × 10 ~ (-6), indicating that it is mainly derived from crustal origin. Metallogenesis occurred in the intracontinental tectonic setting and was the product of large-scale tectono-magmatic events during the Yanshan Period.