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小柳沟是中国在北方最新探明的一个大型钨矿床,本文概要地介绍了该矿床的成矿地质背景和矿床地质特征,用Re-Os同位素方法测试辉钼矿,获得等时线年龄462±13 Ma(2σ),模式年龄436～496 Ma。还证明了成矿发生于板块碰撞期前,成矿物质主要为壳源。
Xiaoliuogou is a newly discovered large-scale tungsten deposit newly discovered in the north of China. In this paper, the geological background of mineralization and the geological characteristics of the deposit are briefly introduced. The molybdenite is tested by Re-Os isotope method and the isochron age is 462 ± 13 Ma (2σ), model age 436 ~ 496 Ma. It was also proved that the mineralization took place before the plate collision, and the metallogenic material was mainly shell source.