我国火山岩型铀矿床中铀-多金属组合特征及其意义

Uranium-polymetallic combination characteristics and significance of volcanic type uranium deposits in China

火山岩型铀矿床是我国四大工业类型铀矿床之一,在部分铀矿床中存在铀矿与多金属矿共生或伴生组合关系。文章在前人研究基础上,以我国几个典型火山岩型铀矿床为例,综合分析铀-多金属组合的时空关系、成矿规律、矿化分带等特征,结果显示:(1)铀与多金属在区域成矿带上共存,在单个矿床中存在垂向矿化分带现象。(2)在矿床范围内,多金属矿化晕比铀矿化晕范围更大。铀多金属组合特征研究对铀-多金属矿联合勘查具有重要的指导意义。

Volcanic type uranium deposit is one of the four industrial types of uranium deposits in China,and parts of them have uranium and polymetallic intergrowth and associated combination relations.On the basis of previous studies,the space and time relationship of uranium-polymetallic combination,metallogenic regu-larities and ore tumble belt characteristics for several typical volcanic type uranium deposits as examples have been analysis comprehensively in this paper.It is concluded that:(1)the uranium and polymetallic coexist in the regional metallogenic belt,combine with vertical zoning phenomenon in a single deposit;(2)in the range of the ore deposit,the halo of polymetallic mineralization is larger than that of uranium mineralization.The study of uranium-polymetallic combination characteristic has important guiding significance for uranium-polymetallic joint exploration.