江西吉泰盆地卤水锂矿床地球化学特征及远景分析

吉泰盆地位于江西省中部、赣江中游,面积4550 km2.构造上属于华南褶皱系赣西南坳陷之大湖山芙蓉山隆断束与吉安凹陷的交接部位,主要沉积一套白垩系红色碎屑岩建造夹含膏盐层和卤水.基于对已知泰和县梅岗卤水锂矿地质特征、钻探成果和水系沉积物异常特征研究,认为白垩系周田组第三段、第四段碎屑岩Li最富集,Li主要还是地层同生富...

Geochemical Characteristics and Prospect Analysis of Brine Lithium Deposits in Jitai Basin, Jiangxi Province

Jitai Basin is located in the middle of Jiangxi Province and the middle reaches of Ganjiang River, with an area of 4550 square kilometers. Structurally, it belongs to the junction of Furongshan fault bundle and Ji''an depression of South China fold system, and mainly deposited a set of Cretaceous red clastic rocks with ointment salt layer and brine. Based on the study of the abnormal characteristics of stream sediments of the known Meigang brine lithium deposit in Taihe County, the authors detected that the brine lithium deposit was mainly caused by the syngenetic deposition of lithium in the third and fourth stages of the Zhoutian Formation of the Cretaceous period. Combined with 1:200 000 geochemical data and 1:50 000 geochemical investigation of Zhixia Sheet in Jitai Basin, 4 potential prospective areas with Meigang lithium high enrichment as the core were delineated, and 8 lithium enrichment areas were discovered in Cretaceous and Quaternary sediments on both sides of Ganjiang River in Jitai Basin, which shows that Jitai basin has a good prospect for finding brine lithium deposits.