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陕西平利县朱家院鹰嘴岩铌矿地质特征

Geological Review(2016)

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Abstract
陕西平利县朱家院鹰嘴岩铌矿矿区位于平利县东南方向,区内地质构造复杂,地层岩相多变,岩浆活动频繁.区内地层属秦岭区岚皋—竹溪分区的紫阳—平利小区,总体呈北西—南东向展布,主要出露地层为元古界郧西群、耀岭河群以及下古生界寒武—志留系的一套深—浅变质的火山碎屑岩、泥质碎屑岩建造.矿区主体属于平利复背斜.褶皱轴呈NW-SE向,背斜核部在轿顶山一带,核部地层为震旦系下统郧西群下亚群,两翼依次出露震旦系下统郧西群上亚群、震旦系下统耀岭河群、寒武-奥陶系洞河群、下志留统梅子垭组及中志留统竹溪群.
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Key words
Shaanxi Province,Niobium deposit,Mineralogy,Geochemistry
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