前寒武纪富铀矿床与热液碱交代作用

本文根据国内外文献资料,提出前寒武纪富铀矿床的形成与碱交代作用在空间上、成因上蕾切相关的认识,并根据碱性热水溶液的性质将前寒武纪富铀矿床分为钠交代型和钾交代型。同时,简述了两种类型矿床的主要特征,成矿地质条件及机理。

PRECAMBRIAN URANIUM-RICH DEPOSITS AND HYDROTHERMAL ALKALI METASOMATISM

According to the literature at home and abroad, this paper considers the close genetic relationship between the formation of Precambrian uranium-rich deposits and hydrothermal alkali metasomatism, in space. Eased on the property of the hydrothermal solution, Precambrian uranium-rich deposits could be divided into two types. Na-metasomatie and K-metasomatic types. At the same time, this paper also describes the main features of uranium mineralization, the favourable geological conditions and mechanism to the formation of these two types of uranium-rich deposits.