节点文献
江西崇仁聚源钨矿床地质特征及成因探讨
Geological Characteristics and Genesis of Juyuan Tungsten Deposit in Chongren,Jiangxi
【摘要】 聚源钨矿的矿体由含钨石英脉带构成,主要赋存于外接触带库里组层间断裂中。北东向层间断裂控制了矿体的产出,矿石矿物主要为白钨矿,黑钨矿极少,石英脉两侧普遍见白云母镶边。文章对矿床成矿特征进行研究,认为燕山期软流圈地幔上涌,地壳层部分熔融形成S型花岗质岩浆,侵入聚源矿区成岩成矿。岩浆期后的气水热液在运移的过程中与裂隙周围的岩石发生强烈的交代蚀变作用,形成云英岩化。随着物理化学条件的不断变化,钨络合物与Ca2+等离子结合,并最终在构造中沉淀富集成矿。
【Abstract】 Juyuan Tungsten Deposit is a quartz vein-type one, which mainly exists in the outer contact zone of the reservoir formation. The occurrence of veins is controlled by NE-trending interlayer faults and joints. Scheelite is the main ore, wolframite is rare, and muscovite margin is common on both sides of quartz veins. Based on the study of geological characteristics, it shows that the Mountain Yan asthenosphere mantle upwells, and partial melting of the crust forms S-type granitic magma, which intrudes into the basement strata. In the process of gas-water hydrothermal fluid migration after magmatic period, strong metasomatism alteration occurs between hydrothermal fluid and rocks around fissures, forming mica lithification. With the constant change of physical and chemical conditions, tungsten complexes combines with Ca2+ plasma, and finally forms tungsten ore.
【Key words】 Juyuan tungsten; greisenization; quartz vein; S-type granite; geological characteristics;
- 【文献出处】 中国钨业 ,China Tungsten Industry , 编辑部邮箱 ,2019年02期
- 【分类号】P618.67
- 【被引频次】2
- 【下载频次】54