北羌塘盆地康如茶卡盐湖矿床地质特征及成矿模式研究

The Geological Characteristics and Metallogenic Model of the Kangruchaka Salt Lake,North Qiangtang Basin(Tibet)

康如茶卡盐湖矿床位于青藏高原腹地,是一个现代盐湖。该矿床与新构造运动有关,形成于早—中更新世,水化学类型为硫酸钠型;矿石矿物组合为石盐、钾石盐、芒硝、石膏等;成矿物质来源于蚀源区及湖盆边缘岩石或岩层的风化淋滤作用;成矿流体为雨水、河流水、泉水和承压水。在此基础上,总结了康如茶卡盐湖矿床成矿模式,对研究该区盐湖矿床成因及勘探具有一定的指导意义。

Kangruchaka located in the hinterland of Tibet platean,is a contemporary saline lake Deposit.Although breakthrough has been made in the exploration work,few studies have been devoted to the theoretical research for the mineralization.Based on the study of the Geological Characteristics of the Kangruchaka Salt lake,the authors analyze the chemical characteristics in the brine,the Mineral Association and the ore-controlling factors of the Kangruchaka Salt Lake.The results show that Kangrucaka Salt lake is related to the Neotectonic movement,should be formed Early-Middle Pleistoceneepoch and hydrochemistry type is Sodium Sulfate Type Brine;Salt Lake have a mineral association of Halite、Sylvite、Mirabilite、Gypsumandsoon;The ore-forming material source is the rocks of provenance area and weathering leaching process;the ore-forming fluid is rain water、river water、spring water and Confined Water.On this basis,The authors propose the metallogenic model of this deposit,the results are significant for realization of the deposit genesis and mineral exploration.