河南省卢氏县蔡家花岗伟晶岩型锂矿地质特征及矿床成因分析  

Geological Characteristics and Genesis of the Caijia Granitic Pegmatite-Type Lithium Deposit in Lushi County,Henan Province

作　　者：张杰[1] 张彦锋 田晓敏 刘恩法[1] 郑广明 韩金生[3] 冯建涛[1] 王玉锋 卫江旗 张宏涛 贾志超 李敏 ZHANG Jie;ZHANG Yanfeng;TIAN Xiaomin;LIU Enfa;ZHENG Guangming;HAN Jinsheng;FENG Jiantao;WANG Yufeng;WEI Jiangqi;ZHANG Hongtao;JIA Zhichao;LI Min(The Fourth Geological Exploration Institute of Henan Bureau of Geo-Exploration&Mineral Development,Zhengzhou,Henan 450001;Henan Institude of Geological Survey,Zhengzhou,Henan 450001;Key Laboratory of Mineralogy and Metallogeny,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,Guangdong 510640;Henan Key Laboratory for Metal Mineral Ore-Forming Geological Process and Utilization of Resource,Zhengzhou,Henan 450001)

机构地区：[1]河南省地质矿产勘查开发局第四地质勘查院,河南郑州450001 [2]河南省地质调查院,河南郑州450001 [3]中国科学院广州地球化学研究所矿物学与成矿学重点实验室,广东广州510640 [4]河南省金属矿产成矿地质过程与资源利用重点实验室,河南郑州450001

出　　处：《地质与勘探》2021年第3期497-506,共10页Geology and Exploration

基　　金：国家自然科学基金项目(编号:41502065);河南省金属矿产成矿地质过程与资源利用重点实验室科技创新基金(编号:豫科创[2019]KC-04)联合资助。

摘　　要：为进一步研究东秦岭地区稀有金属矿产特征,指导河南省卢氏县蔡家锂矿的勘查工作,本文通过对蔡家锂矿野外地质调查、岩心及薄片观察和地球化学分析,结合区域花岗伟晶岩成矿作用规律,对蔡家锂矿的地质特征和矿床成因进行了分析。结果表明,该矿床成因类型属于花岗伟晶岩型;矿石类型为微斜长石-钠长石型、锂辉石-钠长石型、锂云母-钠长石型;矿石矿物以锂辉石、锂云母为主,其次为磷锂铝石、铌锰矿、钽锰矿、铌钽铁矿、绿柱石等。在此基础上,对该区花岗伟晶岩矿脉的母岩和花岗伟晶岩密集区的形成机理进行探讨,表明研究区花岗伟晶岩母岩为桃坪花岗岩体,具有高级分异特征,主要赋存在背斜带次级构造内。In order to further study the characteristics of rare metals in the Eastern Qinling orogenic belt and guide the exploration of Caijia lithium deposit in Lushi County,Henan Province,this work conducted a field investigation,observation to cores and thin sections,and geochemical analysis at the Caijia lithium deposit.Then combined with knowledge on the mineralization of regional granitic pegmatite,the geological characteristics in the study area and the genesis of the deposit were analyzed.The results show that the genetic type of the deposit belongs to the granitic pegmatite-type.The ores in this area include microcline-albite,spodumene-albite,and lepidolite-albite types.The ore minerals are primarily spodumene and lepidolite,followed by phosphorus lithium bauxite,niobanese,tantalum manganese,niobatite and beryl.Based on these features,formation mechanisms of the parent rock of the granitic pegmatite vein and the granitic pegmatite concentration area were discussed,suggesting that the parent rock of the granitic pegmatite in the research area is the Taoping granite body,which has a high-grade differentiation characteristic and is mainly hosted in the secondary structure of the anticline zone.

关 键 词：花岗伟晶岩 锂矿 地质特征 成因 卢氏县 河南省 

分 类 号：P618.71[天文地球—矿床学]