论文部分内容阅读
赛马铀矿床由三种矿化类型构成:(1)产于草绿色霓石霓霞正长岩中的绿层硅铈钛矿型矿化,生成于残浆结晶末期挥发性组分开始起重要作用的阶段,系U,Th,TR,Nb的大型综合矿化;(2)产于碱性矽卡岩中的铀烧绿石-铌钛铀矿型矿化;(3)产于强烈热液蚀变的碱性岩中的沥青铀矿型矿化。碱性岩浆十分完整的分异作用(由强钾质逐步演化为强钠质)和岩浆期后溶液的长期演化过程是生成赛马铀矿床各种类型矿化的主导因素。岩体所处的特定大地构造位置和构造运动机制,以及岩体的钙质围岩,对矿床的生成起了有利作用。基于对赛马铀矿床成矿规律的认识,提出了寻找相似类型矿床的找矿标志和矿化赋存的有利部位。赛马铀矿床的发现进一步证明,霞石正长岩类碱性岩具有一定的铀成矿远景,是寻找工业铀矿床的一个值得注意的对象。
The racehorse uranium deposit is composed of three mineralization types: (1) the green-layer silicate-cristobalite-type mineralization occurring in grass-green aegirine-Neodymium syenite, (2) uranium pyrochlore-niobium-titanium-uranium mineralization in alkaline skarn; (3) large-scale integrated mineralization of U, Th, TR and Nb; (3) Bituminous Uranium Mineralization in Alluvial Alkaline Rocks. The complete differentiation of alkaline magmas (from strong kaolinite to strong sodium) and the long-term evolution of solutions after magma are the dominant factors in the formation of various types of mineralization in Saima uranium deposits. The specific tectonic position and tectonic movement mechanism of the rock mass and the calcareous rock mass of the rock mass play a beneficial role in the formation of the deposit. Based on the understanding of the metallogenic regularity of the uranium deposit in Saima, a prospecting locus for searching for similar types of deposits and favorable sites for mineralization and occurrence are proposed. The discovery of horse-race uranium deposit further proves that nepheline syngenetic basic rock has certain prospect of uranium mineralization and is a worthy target for finding industrial uranium deposit.