摘要
四川省可尔因伟晶岩田东南密集区内具有丰富的锂矿资源,伟晶岩脉充填于可尔因二长花岗岩体周围0~5 000m宽度范围的地层节理裂隙中,按矿物组成及空间分布规律分为5种类型,具明显的水平和垂直分带特征。锂辉石矿体赋存于钠长锂辉石伟晶岩脉中,距岩体500~4 000m,形态简单,以脉状为主,基本上全脉锂矿化,内部结构分带不明显。含矿伟晶岩的主要组成矿物为钠长石、石英、锂辉石,主要有用组分为锂,其他伴生可利用组分有稀有金属铌、钽、铍及有色金属锡。规模巨大的含矿伟晶岩脉有2~3种伟晶岩类型,富矿体、贫矿体及脉石之间往往呈渐变关系。
The closely spaced pegmatite dyke area in the southeastern Keeryin pegmatite field,Sichuan Province is abundant with lithium mineral resources.The pegmatite dykes and veins are filled in joints and crevices of the strata in range of 0-5 000maround the Keeryin monzonitic granite mass.Mineralogically and spatially the pegmatite dykes and veins are zonally dived into 5types.Albite spodumene ore bodies occur as simple veins in the albite spodumene pegmatite dyke and the total dyke is mineralized without obvious internal zoning.The ore-bearing pegmatite dyke is mainly composed of albite,quartz and spodumene.Lithium is the main resources and niobium,tantalum,beryllium and tin are the by-troducts.Huge ore-bearing pegmatite dyke is generally composed of 2-3types of pegmatite.The rich ore is gradually grade into lean ore and non-ore rocks.
出处
《地质找矿论丛》
CAS
CSCD
2014年第1期59-65,共7页
Contributions to Geology and Mineral Resources Research
关键词
锂辉石
伟晶岩
成矿规律
可尔因地区
四川省
Keeryin area
spodumene
pegmatite
metallogenic regularity
Sichuan Province
