甘肃敦煌新泉北钒矿地质特征及成因浅析  

Geological characteristics and genesis analysis of Xinquanbei vanadium deposit in Dunhuang city of Gansu Province

作　　者：逯文辉 张愿宁 李作鹏 LU Wen-hui;ZHANG Yuan-ning;LI Zuo-peng(Third Institute Geological and Mineral Exploration of Gansu provincial Bureau of Geology and Mineral Resources,Lanzhou 730050)

机构地区：[1]甘肃省地质矿产勘查开发局第三地质矿产勘查院

出　　处：《矿产勘查》2019年第6期1389-1396,共8页Mineral Exploration

基　　金：甘肃省地质勘查基金项目(编号:201602-D09,201801-D03)资助

摘　　要：新泉北一带钒矿赋存地层中下寒武统西双鹰山组呈近东西向带状展布,为浅海相碎屑岩-硅质岩沉积建造,赋矿岩性主要为炭质板岩,分布在背斜两翼。矿体形态以层状、似层状为主。矿石以炭质板岩型钒矿石为主,具隐晶质、显微鳞片粒状变晶结构,板状构造。矿石中钒主要以类质同象形式存在于云母类矿物和含钒电气石、石榴石等矿物中。矿床具层控性,属沉积变质型矿床。Xishuangyingshan formation of Middle-Lower Cambrian in Xinquanbei area have a nearly east-westward distribution,is a set of clastic rocks-siliceous sedimentary formation of shallow sea facies which occurred vanadium ore. The mineralization lithology of Xinquanbei vanadium deposit is mainly carbonaceous slate which distributed in the two wings of the Xinquanbei anticline,and the ore body morphology is mainly layered and stratiform-like. The vanadium ore is basically carbon slate type,which characterized as cryptocrystalline texture,micro-scale flake granular crystalloblastic texture and plate structure. Xinquanbei vanadium deposit is based on geologic strata and its genetic type belongs to sedimentary metamorphic ore deposit.

关 键 词：新泉北 钒矿 地质特征 矿床特征 矿床成因 

分 类 号：P611[天文地球—矿床学]