摘要
湖北竹溪地区位于秦岭—大别造山带之秦岭弧盆系之竹山陆缘裂谷,广泛分布有志留纪裂谷双峰式火山岩,是区域内的稀有稀土矿成矿的有利地带。1∶5万水系沉积物测量结果显示,铌、镧、铈异常分布区均与碱性粗面岩分布区吻合。该区碱性粗面岩内已发现铌矿点4处,矿体赋存于粗面质熔结角砾岩、熔结凝灰岩中,主要含铌矿物为铌铁矿、烧绿石、铌易解石等。初步认为铌矿找矿前景较大。
Zhuxi area is located in Qinling-Dabie orogen belt of Qinling arc basin system of Zhushan continental marginrift, rift bimodal volcanic rocks of the Silurian distributed widely, is the favorable position of area of rare earth ore. Ac-cording to the result of the 1:50 000 sediment survey in Zhuxi,Quanxi,Caijiaba,Nb,La,Ce abnormalities area in the al-kali trachyte. 4 niobium ore occurrences are found in alkali trachyte, ore bodies occur in the trachytic welded junctionangle breccia, ignimbrite containing ore bearing lithology trachytic crystal and lithic fused tuff, rough crystalline lithic tufflava etc. , mainly containing niobium minerals columbite, pyrochlore, aeschynite and so on. The preliminary view is thatthe prospect of niobium ore prospecting is great.
出处
《资源环境与工程》
2016年第6期813-816,共4页
Resources Environment & Engineering
关键词
粗面岩类
铌矿
找矿前景
竹溪
trachyte
niobium ore
prospecting potential
Zhuxi