湘西五强溪金矿稀土-微量元素地球化学特征及其成因指示
发布时间：2019-02-08 19:02
【摘要】：针对湘西五强溪金矿化集中区的金矿床成因问题,通过对其赋矿紫红色砂质板岩、发生褪色蚀变的砂质板岩、钠长岩脉、含金钠长石英脉和含金多金属硫化物石英脉的稀土-微量元素地球化学研究发现,稀土配分模式均为右倾重稀土富集型,微量元素反映壳源特征,但具体的分布模式和范围表明,钠长岩脉所代表的岩浆活动与区内金成矿关系密切,而紫红色砂质板岩的褪色蚀变则表明了成矿流体的还原性特征,结合区域地质和矿床地质研究成果,本区金矿床为与印支-燕山期构造岩浆活动产生的还原性成矿流体有关的金矿床。
[Abstract]:In view of the genetic problems of gold deposits in the Wuqiangxi gold mineralization concentration area in western Hunan, through the occurrence of purple slate, discoloration and alteration of slate, sodium longwall veins, the gold deposits in Wujiangxi gold deposit area, western Hunan Province, are studied. The geochemistry of rare earth elements in albite vein and quartz vein containing gold polymetallic sulphide shows that the REE distribution pattern is right heavy rare earth enrichment type, and trace elements reflect the characteristics of crust source. However, the specific distribution pattern and scope indicate that the magmatic activity represented by the long sodium veins is closely related to the gold mineralization in the area, while the fading and alteration of the purplish slate indicate the reductive characteristics of the ore-forming fluids. Based on the results of regional geology and deposit geology, the gold deposit in this area is related to the reductive ore-forming fluid produced by Indosinian Yanshanian tectonic magmatism.
【作者单位】： 东北大学秦皇岛分校资源与材料学院;东北大学资源与土木工程学院;辽宁省矿产勘查院;
【基金】：中央高校基本科研业务费专项资金(N130423003)
【分类号】：P618.51
本文编号：2418687
[Abstract]:In view of the genetic problems of gold deposits in the Wuqiangxi gold mineralization concentration area in western Hunan, through the occurrence of purple slate, discoloration and alteration of slate, sodium longwall veins, the gold deposits in Wujiangxi gold deposit area, western Hunan Province, are studied. The geochemistry of rare earth elements in albite vein and quartz vein containing gold polymetallic sulphide shows that the REE distribution pattern is right heavy rare earth enrichment type, and trace elements reflect the characteristics of crust source. However, the specific distribution pattern and scope indicate that the magmatic activity represented by the long sodium veins is closely related to the gold mineralization in the area, while the fading and alteration of the purplish slate indicate the reductive characteristics of the ore-forming fluids. Based on the results of regional geology and deposit geology, the gold deposit in this area is related to the reductive ore-forming fluid produced by Indosinian Yanshanian tectonic magmatism.
【作者单位】： 东北大学秦皇岛分校资源与材料学院;东北大学资源与土木工程学院;辽宁省矿产勘查院;
【基金】：中央高校基本科研业务费专项资金(N130423003)
【分类号】：P618.51
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