摘要
本文以锂元素的地球化学特征为基础,探讨了原生锂和沉积型锂矿的富集规律,分析了贵州地区锂矿远景,提出了原生锂主要富集方式与碰撞重熔的花岗(伟晶)岩密切相关,而沉积型锂矿主要与生物吸收和黏土矿物吸附有关;因此,国内主要原生锂矿多分布于造山构造系和对接带。贵州原生锂矿和沉积型锂矿资源比较丰富,其中原生锂矿与新元古代Rodinia超大陆裂解-拼合有关的从江-梵净山地区陆壳改造型碰撞超酸性过铝质花岗岩;而沉积型锂矿主要来自于泥盆纪至中二叠纪滨浅海-湖沼相环境下的黏土岩和碳质泥页岩。尽管贵州沉积型锂矿床的品位不高,但常具有大型-超大型规模,并伴生有多种用元素和矿产综合利用的前景广阔。类似成矿地质背景在国内扬子、华北和塔里木地块等区域也存在,沉积型锂矿资源是一个具有发展前景的挖掘方向。
Based on the geochemical characteristics of lithium,this paper discusses the enrichment laws of primary and sedimentary lithium ores,and analyzes the prospects of lithium ore in Guizhou.It is proposed that the main enrichment mode of primary lithium is closely related to collisional anatexis granite(pegmatite),while the main enrichment mode of sedimentary lithium ore is related to biological and clay mineral adsorption.The main primary lithium deposits in China are mainly distributed in orogenic structural system suture zones.Guizhou has abundant primary and sedimentary lithium ores resources.The primary lithium ore is related to the continental crust modification collisional acid peraluminous granites in Congjiang-Fanjingshan area,which are related to the breakup and disintegration of the Neoproterozoic Rodinia supercontinent.While the sedimentary lithium ore is mainly derived from clayey rocks and carbonaceous mudstones in the littoral-shallow and lacustrine facies from the Devonian to the Middle Permian.Although the grade of sedimentary lithium deposits in Guizhou is low,they often have large to super-large scales and have broad prospects for comprehensive utilization of various useful elements and minerals.Similar metallogenic geological backgrounds also exist in other regions of China,such as the Yangtze,North China and Tarim blocks.Sedimentary lithium ore resources are a promising mining direction.
作者
杨涛
张银峰
黄波
YANG Tao;ZHANG Yinfeng;HUANG Bo(School of Architecture and Urban Planning,Guizhou University of Technology,Guiyang 550003,Guizhou;Guizhou Geological Museum,Guanshanhu District,Guiyang 550081,Guizhou;Physical and Chemical Exploration Brigade,Geology and Mineral Resources Exploration Bureau of Guizhou Province,Duyun,Guizhou 55800)
出处
《四川地质学报》
2024年第4期613-619,共7页
Acta Geologica Sichuan
基金
贵州省科技计划项目“推进贵州地质资料大数据应用产业化研究”(黔科合[2016]支撑2809)
贵州理工学院高层次人才科研启动项目(XJGC20161101)共同资助。
关键词
锂矿
中酸性花岗(伟晶)岩
碰撞重熔
沉积型
贵州
lithium ore
medium-acidic granite(pegmatite)
collisional anatexis
sedimentary type
Guizhou.
