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内蒙古扎鲁特旗巴尔哲超大型矿床控矿因素分析
(1.核工业北京地质研究院, 北京 100029;2.中核铀资源勘查与评价技术重点实验室, 北京 100029)
ORE-CONTROLLING FACTORS OF THE BAERZHE SUPER-LARGE DEPOSIT IN JARUD BANNER, INNER MONGOLIA
(1.Beijing Research Institute of Uranium Geology, Beijing 100029, China;2.Key laboratory of Uranium Resource Exploration and Evaluation Technology, CNNC, Beijing 100029, China)
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投稿时间:2018-10-30    修订日期:2018-12-25
中文摘要: 内蒙古巴尔哲矿床不仅是超大型的REE-Zr-Nb-Ta-Be多金属矿床,同时也是大型的U-Th矿床。通过野外地质观察、地面伽玛能谱测量、岩矿鉴定和室内数据处理等,发现铀、钍主要以类质同像的形式存在于矿石矿物中;铍和稀土元素的独立矿物以羟硅铍钇铈矿和独居石为主;铌、钽、锆主要赋存在铌铁矿、烧绿石和锆石中。另外,从构造、岩性及蚀变特征三方面,对巴尔哲矿床的控矿因素进行了详细解剖,研究表明,巴尔哲矿床的铀钍矿化与稀有稀土矿化密切共生,均赋存于强蚀变钠闪石花岗岩中,蚀变主要为钠长石化和硅化。该矿床主要受构造和碱性花岗岩体的控制,是构造和碱性花岗质岩浆演化的耦合产物。
Abstract:The Baerzhe deposit is not only a REE-Zr-Nb-Ta-Be super-large polymetallic deposit, but also a large U-Th deposit. Uranium and thorium mainly exist in the form of isomorphism. The minerals of beryllium and rare earth elements are mainly yttroceber-ysite and monazite. Niobium, tantalum and zirconium are mainly hosted in niobite, pyrochlore and zircon. Besides, in this paper, the ore-controlling factors of Baerzhe super-large deposit are analyzed from three aspects of structure, lithology and alteration. The results show that uranium-thorium mineralization is closely related to REE and rare elements mineralization in the Baerzhe deposit, and all of them occur in strongly altered riebeckite granite. Alteration is mainly albitization and silicification. The deposit is controlled by tectonics and alkaline granite body, and it is a product of structure and alkaline granitic magma evolution.
文章编号:     中图分类号:P618.2    文献标志码:
基金项目:国家自然科学基金(41602080);国防预研项目(3210408)
引用文本:
陈金勇,范洪海,王生云,张闯,赵敬洋,耿瑞瑞.内蒙古扎鲁特旗巴尔哲超大型矿床控矿因素分析[J].地质力学学报,2019,25(1):27-35DOI:10.12090/j.issn.1006-6616.2019.25.01.004
CHEN Jinyong,FAN Honghai,WANG Shengyun,ZHANG Chuang,ZHAO Jingyang,GENG Ruirui.ORE-CONTROLLING FACTORS OF THE BAERZHE SUPER-LARGE DEPOSIT IN JARUD BANNER, INNER MONGOLIA[J].,2019,25(1):27-35DOI:10.12090/j.issn.1006-6616.2019.25.01.004

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