On the Geochemical Characteristics and Genesis of the Yinchang Gold Deposit in Northwestern Sichuan Province
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摘要: 为探讨银厂金矿床的地球化学特征及成因,测试了石英包裹体均一温度、盐度和S-H-O同位素组成。研究表明,成矿物质来源主要是三叠系杂谷脑组浅变质碎屑岩,成矿流体为深源流体与变质水的混合热流体,成矿温度为中低温。矿床成因类型为断裂控制的中低温热液型金矿床。Abstract: This paper measured the homogenization temperature, salinity and S-H-O isotopic compositions of the quartz inclusions in order to study the geochemical characteristics and genesis of the Yinchang gold deposit. The results show that the ore-forming source is mainly from the epimetamorphic clastic rocks of Triassic Zagunao Group. The metallogenic fluid is a mixture of juvenile fluid with metamorphic water. The metallogenic temperature is low or medium. The genetic type of Yinchang gold deposit is a low-or-medium temperature hydrothermal deposit controlled by fracture.
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