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目前已知辉绿岩中铀矿床主要分布在贵东岩体东部的下庄矿田,这类铀矿床受控于近东西向的辉绿岩带与北北东向硅化断裂带的交叉部位,被称为交点型铀矿床。交点式矿床不仅品位高,且储量占该矿田的一半。因此,研究辉绿岩中铀矿床蚀变分带,不仅对老矿区扩大具有现实意义,而且能为找寻富铀矿提供重要的识别标志。在研究辉绿岩产出地质环境、岩石学特征的基础上,着重探讨了辉绿岩中铀矿床产出特征、矿床侧缘蚀变分带和空间结构,阐明了蚀变分带在找矿中的作用。将辉绿岩中铀矿床蚀变类型划分为8类,总结了这些蚀变
It is known that the uranium deposits in the diabase are mainly distributed in the Xiazhuang orefield in the east of the Guidong massif. Such uranium deposits are controlled by the intersections of diabase belt and NE-trending silicification fault zone in the near east-west direction Known as the intersection of uranium deposits. Intersectional deposits are not only of high grade but also account for half of the field. Therefore, studying the alteration zoning of uranium deposits in diabase not only has practical significance for the expansion of old mines, but also provides important identification signs for finding uranium-rich uranium deposits. Based on the study of geological environment and petrology characteristics of diabase, the characteristics of uranium deposit in diabase are discussed, and the alteration zoning and spatial structure of the lateral margin of ore deposit are discussed. The alteration zoning is elucidated in prospecting In the role. The alteration types of uranium deposits in diabase are classified into eight types, and the alterations are summarized