期刊文献+

西藏中冈底斯成矿带中段铍矿化体的发现与意义 被引量:4

The discovery and significance of the beryllium mineralization in the middle part of the central Gangdise metallogenic zone,Xizang
下载PDF
导出
摘要 经过初步工作,在西藏中冈底斯成矿带发现极具潜力的铍矿找矿线索。新发现的铍矿化体赋存在侵位于古生代地层的粗粒状和伟晶状二云母花岗岩中,岩体和岩脉即为矿化体,并与围岩具有截然的界线。围岩发育热液蚀变和热变质,包括角岩化、硅化、电气石化、石榴子石化、红柱石化、堇青石化等,但分带不甚明显,矿化体和围岩间还发育有"云母线"。矿化体罕见黑钨矿和锂辉石,萤石较少,主要为铌钽矿物和含铍矿物。这一新发现丰富了中冈底斯成矿带新矿种和新的矿床类型,对更加深入地认识冈底斯成矿带构造-岩浆演化与成矿作用、丰富和完善青藏高原南部碰撞造山与成矿理论有重要意义。 The potential clues for beryllium mineralization are newly found in the middle part of the central Gangdise metallogenic zone,Xizang.The beryllium-mineralized bodies herein are hosted in the coarsely granular and pegmatoid two-mica granites emplaced in the metamorphic Palaeozoic strata,occur as rock bodies and rock veins,and are well-defined with the wall rocks.There occur in the wall rocks both hydrothermal alteration and thermal metamorphism,including hornfeldsization,silicification,tourmalinization,garnetization,andalusitization and cordieritization.The“mica line冶is also observed between the beryllium-mineralized bodies and wall rocks.The minerals wolframite and spodumene are scarce in the beryllium-mineralized bodies,with additional a small amount of fluorite.The economic minerals include niobium-tantalum minerals and beryllium-bearing minerals.The discovery in this study has revealed that there is a great prospecting potentiality not only for lead,zinc,iron,molybdenum and gold deposits,but also for beryllium deposits in the central Gangdise metallogenic zone.Furthermore,this discovery also has an important geological significance to the better understanding of the tectonic-magmatic evolution and mineralization,collision and mountain building and metallogenesis in the southern part of the Qinghai-Xizang Plateau.
作者 李应栩 黄永高 韩飞 严刚 杨学俊 李光明 宋旭波 杨青松 LI Ying-yu;HUANG Yong-gao;HAN Fei;YAN Gang;YANG Xue-jun;LI Guang-ming;SONG Xu-bo;YANG Qing-song(Chengdu Center,China Geological Survey,Chengdu 610081,Sichuan,China;Sichuan Institute of Geological Survey,Chengdu 610081,Sichuan,China;Chengdu University of Technology,Chengdu 610059,Sichuan,China)
出处 《沉积与特提斯地质》 CAS CSCD 2018年第4期62-67,共6页 Sedimentary Geology and Tethyan Geology
基金 国家重点研发计划课题(编号:2016YFC0600308) 中国地质调查局地质调查项目(编号:20160015) 国家自然科学基金资助项目(编号:41702086)资助的成果
关键词 中冈底斯成矿带 新发现 铍矿 西藏 central Gangdise metallogenic zone new discovery beryllium deposit Xizang
  • 相关文献

参考文献12

二级参考文献290

共引文献1151

同被引文献138

引证文献4

二级引证文献37

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部