新疆富蕴县柯鲁木特锂-钽-铌矿床228号脉地质特征分析

GEOLOGICAL CHARACTER OF No.228 VEIN OF THE KELUMUTE LITHIUM-TANTALUM-NIOBIUM- DEPOSIT OF FUYUN COUNTY IN XINJIANG

通过对柯鲁木特锂-钽-铌矿床228号矿脉的普查,发现该矿脉锂、钽、铌的含量较高,矿脉规模大。为了进一步在该区开展找矿工作,阐述了228号含矿伟晶岩脉的共生结构分带的产出特征、结构带内部特征、稀有元素含量变化及其不同矿化类型等,在总结了228号及其相似的113号、116号含矿伟晶岩脉成矿地质背景的基础上,指出伟晶岩的主要形成阶段和矿化阶段是在一个比较封闭的地质环境中生成的,并认为含矿伟晶岩脉的形成与二云母二长花岗岩有着密不可分的关系。

#228 vein of the Kelumute lithium-tantalum-niobium deposit is rich in lithium, tantalum and niobium and large in scale according to the result of the reconnaissance survey. In order to carry out further exploration in the area, the paper studied the occurrence, inner character of the structure zone, rare element concentration variation and its different mineralization type of the paragenetic structure zoning of the #228 ore bearing pegmatite dyke. It is pointed out that the main diagenic and metallogenic stage of pegmatite rock is coincident to the relatively enclosed geological environment, and the formation of ore bearing pegmatite vein is closely associated with the two mica monzogranite based on the summarizing of the ore forming geological background of #228 and the similar #113 and 116 ore bearing pegmatite.