阳泉北部铌钽矿地球化学特征

Geochemical Characteristics of Niobium-tantalum Mine in Northern Yangquan

盂县下社—鹤山铌钽矿预查为山西省国土资源厅2014年度地质勘查项目,通过对测区开采1/10000地质草测、1/2000岩石地球化学测量及少量地表工程,系统统计了该地区花岗伟晶岩、花岗岩、黑云斜长(二长)片麻岩、斜长角闪岩、片麻状花岗岩中Nb元素、Ta元素、Rb元素的分布规律。分析认为,铌钽异常表现为与花岗伟晶岩成正向关系,且Rb元素与Nb元素、Ta元素之间呈正相关。概述了该地区铌钽矿为花岗伟晶岩类矿床,希望能为稀有金属矿研究薄弱的山西地区提供借鉴。

Pre-survey of Xiashe-Heshan niobium-tantalum mine of Yu County is an annual geological exploration project of Shanxi Land and Resources Department in 2014.Through surveying 1/10000 geological grass,1/2000 rock geochemistry and a small amount of surface engineering,the distribution of Nb,Ta and Rb elements in granitic pegmatites,granites,biotite plagioclase(monzonite)gneisses,amphibolite and gneissic granites in this area was systematically studied.It is considered that Nb-Ta anomaly is positively related to granitic pegmatite,and Rb is positively related to Nb and Ta elements.It was summarized that the niobium-tantalum deposit in this area is a kind of granitic pegmatite deposit,which can be used for reference in Shanxi province where the study of rare metal deposit is weak.