论文部分内容阅读
九星铁金矿位于扬子陆块与华夏陆块过渡带上,矿体产于甲路一段与二段间的翁浪—地虎滑脱蚀变带中,是一个小型规模矿床。电子探针、主-微量和稀土元素分析发现,主量元素方面,磁铁矿中K2O、Mg’O、P2O5和Ca’O含量甚微,而Fe’Ot含量与Si’O2、A12O3、Cr2O3和V2O3含量呈明显的负相关关系;微量元素方面,V、Cr、Zn、Cu、Sb、W、Pb和Bi等元素富集;稀土元素方面,具有富轻稀土、Eu负异常(δEu均值为0.77)和Ce弱负异常(δCe均值为0.95)特征。相关参数的判别和对比结果显示,九星铁金矿床的形成经历了成矿环境从弱氧化环境向还原环境过渡的过程,其成因属于热液型。
Located in the transition zone between Yangtze Block and Huaxia Land Block, Jiuxing Iron and Gold Mine is a small-scale deposit in the Wenglang-Gehu skull alteration zone between the first and second sections of the A road. The results showed that the content of K2O, Mg’O, P2O5 and Ca’O in the magnetite was small, while the content of Fe’Ot was not related to the content of Si’O2, A12O3, Cr2O3 And trace elements (V2O3). Trace elements include V, Cr, Zn, Cu, Sb, W, Pb and Bi, etc. In terms of rare earth elements, they have light rare earths and Eu negative anomalies 0.77) and weak weak Ce (δCe mean 0.95). Discrimination and comparison of related parameters show that the formation of Jiuxing iron-gold deposit has undergone a transition from a weak oxidizing environment to a reducing environment, and its origin is hydrothermal.