新疆巴什苏洪地区稀有矿床特征及找矿方向探讨  

Rare metal deposit characteristics and discussion on exploration direction in Bashisuhong area,Xinjiang

作　　者：蔡厚安[1] 侯朝勇[1] 张文杰[1] 裴森龙 肖文进[1] CAI Houan;HOU Chaoyong;ZHANG Wenjie;PEI Senlong;XIAO Wenjin(China Non-ferrous Metals Resource Geological Survey,Beijing 100012,China)

机构地区：[1]有色金属矿产地质调查中心,北京100012

出　　处：《矿产与地质》2021年第3期379-384,共6页Mineral Resources and Geology

基　　金：中国地质调查局“西南天山成矿带霍什布拉克—乌拉根地质矿产调查”(DD20160001)项目资助。

摘　　要：新疆巴什苏洪铌钽矿是近年新发现的稀有矿床。依据野外勘探成果的基础上,结合室内研究总结了该矿床的特征:矿床类型属碱性花岗岩和碱性伟晶岩复合型矿床,含矿岩体包括碱长花岗岩脉和侧向的霓长伟晶岩两种形式;主矿体产于第四期中细粒碱性花岗岩中,呈密集脉状沿近EW向分布,矿脉具有陡倾、厚度稳定连续分布特点。估算铌钽资源量超过1万吨,达中型规模,具有成为低品位、中厚度、大范围、复合型的大型稀有金属矿床的远景。指出了未来的找矿方向,应注意矿区南部可能的隐伏岩体含矿性研究以及NNE构造带相同地质背景区域的调查。Bashisuhong Nb-Ta deposit is a rare metal deposit newly discovered in Xinjiang.Based on field survey and in-door research result,the paper has summarized the characteristics of the deposit.Bashisuhong deposit belongs to alkaline granite and alkaline pegmatite complex deposit and there are two types of orebodies,alkali feldspar granite vein and lateral aegirine feldspar pegmatite.The main orebody is hosted in the medium-fine-grained alkaline granite of the fourth stage with the shape of dense vein in nearly EW direction.The ore veins have the characteristics of steep dip,stable thickness and continuous distribution.It is estimated that there are over 10,000 tons of Nb and Ta resources,reaching a medium scale,with the prospect of a large-scale rare metal deposit of low-grade,medium-thickness,large-area,and composite type.The direction of future exploration is also put forward in this paper.The exploration work should pay attention to the potential mineralization of buried rock mass in the south of the mining area and the investigation of the NNE structural belt in the same geological background area.

关 键 词：稀有金属 矿床类型 碱长花岗岩 找矿方向 塔里木盆地北缘 新疆 

分 类 号：P618.7[天文地球—矿床学]