关键词：
元素地球化学
金属成矿流体
铜矿床
稀土元素
摘要：
The Jinmen copper deposit, which is situated on the northern margin of the Lanping-Simao back-arc basin, western Yunnan Province, is a silver-bearing, high-grade vein-typecopper deposit. Comprehensive element geochemical studies of the host rocks and hydrothermalminerals revealed the regularities in the distribution, mobilization and transport of elementsfrom the host rocks to hydrothermal minerals. In conunction with the fluid inclusion and isotope data, it is suggested that the ore-forming fluid was derived mainly from a deep sourcecharacterized by CO2 enrichment and reduction in nature. It is also suggested that the oreforming materials come largely from a deep sourcel although the contribution of the countryrocks should not be ruled *** is also found that some hydrothermal minerals are possessed of MREE-enrichment patterns. It is deduced that the REEs in the deep-source ore fluid were transported in the form ofCO2-3 complexes and were deposited in a continental basin （or a hot-spring basin）.
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中文科技期刊
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