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矿床地质  2005 

内蒙古沙麦钨矿床地质及流体包裹体研究

Keywords: 地球化学,钨矿床,地质特征,流体包裹体,矿床成因,沙麦,内蒙古

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Abstract:

文章首次对内蒙古东乌珠穆沁旗沙麦钨矿床的石英流体包裹体进行了均一温度、盐度和成分测试,并分析了主成矿期石英流体包裹体的氢、氧同位素组成。结果表明,沙麦钨矿床成矿流体为中_高温、中低盐度的H2O-NaCl-CO2±CH4流体体系,系岩浆演化热液与大气降水的混合产物。花岗质岩浆不仅从深部携带了成矿物质,而且带来了巨大热能,在自身发育的断裂系统内引起热液的对流循环和混合,导致了钨的沉淀。

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