江西省桃山铀矿田大府上矿床绿泥石特征及其地质意义
发布时间：2018-08-19 19:40
【摘要】：绿泥石化是大府上铀矿床重要的成矿期蚀变类型。绿泥石的形貌特征显示该矿床绿泥石主要有2种产出形态,即沿长石、石英等矿物裂隙生长呈蠕虫状集合体产出的绿泥石和由黑云母蚀变而成的绿泥石。本文主要利用电子探针微区分析方法研究了绿泥石化学成分特征。研究结果表明,该矿床绿泥石为富铁的蠕绿泥石,形成于还原环境;绿泥石形成温度为201.48~224.20℃,平均213.65℃,属中低温热液蚀变范围;形成机制主要有"溶蚀-结晶"和"溶蚀-迁移-结晶"两种方式。绿泥石成分特征对探讨铀成矿环境与矿床评价具有重要的指示意义。
[Abstract]:Green mud fossilization is an important metallogenic alteration type of Dafushang uranium deposit. The morphology of chlorite shows that there are two main types of chlorite in the deposit, that is, chlorite formed by worm-like aggregates along the fissure of feldspar and quartz and chlorite formed by biotite alteration. In this paper, the chemical composition of chlorite was studied by electron probe microanalysis. The results show that the chlorite of the deposit is iron rich vermicular chlorite formed in the reduction environment, and the formation temperature of chlorite is 201.48U 224.20 鈩，
本文编号：2192635
[Abstract]:Green mud fossilization is an important metallogenic alteration type of Dafushang uranium deposit. The morphology of chlorite shows that there are two main types of chlorite in the deposit, that is, chlorite formed by worm-like aggregates along the fissure of feldspar and quartz and chlorite formed by biotite alteration. In this paper, the chemical composition of chlorite was studied by electron probe microanalysis. The results show that the chlorite of the deposit is iron rich vermicular chlorite formed in the reduction environment, and the formation temperature of chlorite is 201.48U 224.20 鈩，
本文编号：2192635
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