华南混合岩中的铀矿化

以浸染扶晶质铀矿形式产于混合岩中的铀矿化是华南一种新的铀矿化类型。根据晶质铀矿在矿体中的存在形式,可划分为原生型和改造型。原生型矿床中主要铀矿物是晶质铀矿,改造型矿床中的主要铀矿物是沥青铀矿和残余的晶质铀矿。此类型矿床是富铀地层选择性熔融,并在此过程中导致铀的活化、转移和局部富集的结果。

URANIUM MINERALIZATION OF MIGMATITE IN SOUTH CHINA

The uranium mineralization occurs in migmatite in the form of disseminated uraninite is a new type found in south China. According to the forms of uraninite existence in orebodies, it can be divided into primary and reworked subtypes. The principal uranium mineral in the deposits of primary subtype is uraninite, but in reworked subtype are pitchblende and relict uraninite. The formation of uranium mineralization is considered as a result remobilization, migration and local concentration caused by preferential melting of the uranium-rich strata.