关键词: 含锂卤水矿, 　卤水提锂, 　沉积环境, 　矿床成因, 　沉积卤水矿床, 　成矿物质来源, 　开发利用前景

Abstract: In recent years,with the continuous study breakthrough of the improvement of lithium extraction technique in brine,the production process of lithium extraction is more and more perfect,lithium extraction in brine is gradually becoming the important way to the development and production of lithium salt,the prospecting and development and utilization of brine deposit will be paid more and more attention.The contents of NaCl and LiCl are high in Meigang highsalt and rich lithium type underground brine mine in Taihe County,Jiangxi Province,w(NaCl) 278 146～308 362 mg/L,the highest content of NaCl is almost 2.6 times of the industrial grade of NaCl,w(LiCl) 611～1 136 mg/L,the highest content of LiCl is almost 3.8 times of the industrial grade of NaCl,which show that the industrial value of the brine deposit is good.Based on the geological prospecting and exploration results of the mining area newly obtained in recent years,the metallogenic geological characteristics of the brine deposit is discussed,besides〖LM〗 that,the deposit genesis and source of metallogenic materials are also discussed in detail.The study results show that:①Meigang Libearing brine deposit in Taihe County is located in the east of Jitai Basin,is is hosted in Cretaceous strata,the formation of the deposit is mainly controlled by sedimentary environment;②brine orebodies in the mining area are mainly distributed the middle of the first red layer of Zhoutian Formation of Late Cretaceous Upper Series,the saltbearing layer can be divided into 7 layers,among them,the third and sixth layer are the direct orebearing layers of lithium rich saturated brine;③the deposit genesis of Meigang brine mine is belongs to the terrigenous clasticchemical rock type salts sedimentary brine deposit,metallogenic epoch of the deposit is Late Cretaceous;④chemical weathering product of mineral rocks in the catchment basin in the mining area is the main source of chemical substances of salt brine,the most of Meigang brine is deep circulating water of sedimentary brine and the main material source of lithium in basalt activities.Based on the above discussion results in this paper,the prospect of development and utilization of Libearing brine deposit in the mining area is analyzed,besides that,in order to promote the prospecting and utilization of the brine deposit in the mining area,some related suggestion about strengthening the development of lithium brine resources,paying attention to the comprehensive utilization in the development of lithium brine resources and strengthening the study of the secondary development of lithium salt.The above discussion results related to the metallogenic geological characteristics and the prospect of development and utilization of Maigang Libearing brine deposit in Taihe County,Jiangxi Province can provide further meaningful reference for conduct further prospecting and development of the deposit in the mining area or its adjacent area.

Key words: Libearing brine deposit, Lithium extraction in brine, Sedimentary environment, Sedimentary brine deposit, Deposit genesis, Source of metallogenic material, Prospect of development and utilization