地质学报2012，Vol.86Issue(5)：753-756,4.
白云鄂博西矿火山岩岩石学特征
Petrological Characteristics of the Volcanic Rocks in the West Mine of Bayan Obo Deposit
摘要
Abstract
It has been 90 years since Prof. Ding Daoheng found the Bayan Obo iron ore in 1927. Follow-up research and production show that the deposit is not just an iron ore, but world's largest rare earth and niobium deposit. Many geological experts both home and abroad have conducted numerous investigation and research. And volcanic rocks had been predicted to occur in this area. It was not until 1982 that the authors found volcanic rocks in the west mine of this area, which occur mainly in the slate surrounding iron orebodies. They are mainly composed of intermediate or acidic volcanic rock series, including dacitic breccia tuff, dacitic fused breccia, and dacite. The volcanic rocks are characterized by porphyry structure and aphanitic tuff texture. The dacite is microcrystalline structure, while feldspar and quartz phenocrysts are of well-developed microcracks. The quartz shows a harbor structure with good ablation. Secondary sides, volcanic glass and its debris also occur in the feldspar.关键词
白云鄂博西矿/火山岩/岩石学特征Key words
west ore/ discovery of volcanic rocks/ petrological characteristic/ Bayan Obo引用本文复制引用
刘铁庚,张正伟,叶霖,邵树勋,杨占峰,李称心,冯建荣..白云鄂博西矿火山岩岩石学特征[J].地质学报,2012,86(5):753-756,4.基金项目
本文为国家J然科学基金项目(编号41073042)和中国科学院矿床地球化学国家开放实验室项目(编号2010001)资助的成果. （编号41073042）
