新疆西准噶尔克孜勒阔腊一带铀矿地质特征及找矿方向探讨

Geological Characteristics and Prospecting Direction of Uranium Deposits in Kuola Area of Kizil, Western Junggar,Xinjiang

位于西准噶尔扎伊尔晚古生代火山岩带上的北金齐克孜勒阔腊地区,是新疆境内新发现的火山岩型铀矿基地。近年来随着基础地质工作的深入开展,铀矿产勘查也取得了突出的成果。为了进一步研究矿床成因并指导找矿,结合区域成矿地质背景,以克孜勒阔腊铀地质勘查成果为依据,通过深入分析铀矿地质特征,认为其赋矿围岩为二叠系库吉尓台组(P3kj)为主,二叠统卡拉岗组(P2K)次之,矿体受馒头山近东西向左型压扭构造带控制。矿化与石炭系花岗斑岩关系较紧密,矿化以砂岩中的浸染状铀-多金属为主,矿床具有火山岩型热液矿床特征。总结了地表矿化蚀变-岩体找矿标志。综合研究认为该区具有良好的铀成矿潜力。

The Kuola area in northern Jinqi Kizil,located in the Late Paleozoic volcanic belt in Zaire,western Junggar,is a newly discovered volcanic uranium ore base in Xinjiang.In recent years,with the deepening of basic geological work,uranium mineral exploration has also achieved outstanding results.In order to further study the genesis of the deposit and guide the prospecting,this paper,based on the geological exploration results of Kula uranium in Kizil,and through in-depth analysis of the geological characteristics of uranium deposits,holds that the host rock is mainly the Permian Kujilitai Formation(P3kj),followed by the Permian Karagang Formation(P2K),and the ore body is controlled by the near east-west leftward compression-torsion structural belt in Mantou Mountain.Mineralization is closely related to Carboniferous granite porphyry.Mineralization is dominated by disseminated uranium-polymetallic in sandstone,and the deposit is characterized by volcanic hydrothermal deposit.This paper summarizes the surface mineralized alteration-rock body prospecting criteria.Comprehensive study shows that this area has good uranium mineralization potential.