国家重点自然科学基金项目、中国地质调查局地质调查项目
本文为查明内蒙古夏尔楚鲁金矿床的形成时间，对金矿体中发育辉钼矿的5件辉钼矿样品进行了铼-锇同位素分析，所获同位素等时线年龄为263.8±4.4Ma，其MSWD值为1.3。鉴于辉钼矿呈浸染状和团块状分布于黑云母花岗岩中，并且与石英和钾长石呈共生结构关系，可以推测夏尔楚鲁金矿床和黑云母花岗岩的形成时间均为早二叠世，属海西期构造—岩浆活动的产物。
The Xiaerchulu gold deposit of Inner Mongolia located in the Ondor Sum Caledonian accretion zone in Xing’an-Mongolia orogenic belt. The present paper is the first time to report accurate Re-Os isotopic data acquired from 5 crystals of molybdenite separated from this deposit. The Re-Os isotopic model age ranges from (260.1±3.6) Ma to (263.7±3.7) Ma and weighted mean is (261.5±1.6) Ma. The Re-Os isotopic analysis also gives an isochronal age of (263.8±4.4) Ma and the MSWD is 1.3. Combined with the geological features of the deposit, the metallogenic time is Early Permian Epoch. The genesis is related closely to Hercynian tectonic - magmatic activity.
王佳新,聂凤军,张雪旎,张赋,刘翼飞,刘春花,丁成武.2014.内蒙古夏尔楚鲁金矿床辉钼矿铼-锇同位素年龄及地质意义[J].地质学报,88(12):2386-2393.
WANG Jiaxin, NIE Fengjun, ZHANG Xueni, ZHANG Fu, LIU Yifei, LIU Chunhua, DING Chengwu.2014. Re-Os isotopic dating of molybdenite separated from the Xiaerchulu Au deposit, Inner Mongolia and its geological significance[J]. Acta Geologica Sinica,88(12):2386-2393.
