摘要
通过对陕西蒿坪铌矿地质特征、矿化富集规律、岩石学特征进行研究,分析总结了矿区铌控矿地质条件及找矿标志,确立奥陶系—志留系斑鸠关组中溢流相黑云母粗面岩为铌矿赋矿岩石。初步认为区内碱中性火山岩中铌成矿为早期岩浆结晶分异与晚期火山气液碱质交代共同作用的结果,矿床成因类型属海相碱中性火山熔岩型。
Based on the study on the geological characteristics,mineralization enrichment regularity and petrological characteristics of the Haoping niobium deposit in Shaanxi,the ore-forming conditions and prospecting indicators of the mining area were analyzed and summarized.The analysis results showed that the host rock of niobium ore was the overflowed biotite trachyte in the Ordovician-Silurian Banjiuguan Formation.It is preliminarily believed that the mineralization of niobium in the alkali-neutral volcanic rocks in the area is the common result of the early magmatic differentiation and the late volcanic gas-liquid alkali metasomatism.The genetic type of the deposit belongs to marine alkali-neutral volcanic lava type.
作者
刘能
高云
贾忠胜
赵焕强
LIU Neng;GAO Yun;JIA Zhongsheng;ZHAO Huanqiang(Mineral Geology Survey Center in Shaanxi Province,Xi’an 710068,Shaanxi,China;Geological Survey Center Institute in Shaanxi Province,Xi’an 710054,Shaanxi,China;Sino Shaanxi Nuclear Industry Group Geological Survey Co.,Ltd.,Xi’an 710100,Shaanxi,China)
出处
《矿产与地质》
2019年第2期242-247,共6页
Mineral Resources and Geology
基金
陕西省公益性地质调查项目“陕西紫阳县—平利县铌钽矿产调查评价”(编号:20150104)资助
关键词
蒿坪铌矿
黑云母粗面岩
控矿地质条件
矿床成因
陕西
Haoping niobium deposit
biotite trachyte
ore-forming conditions
genesis
Shaanxi Province
