诸广山岩体南部中段花岗岩晶质铀矿标型特征的探讨

本文以花岗岩的副矿物组合类型为基础,从剖析晶质铀矿的晶形标型入手,探讨了诸广山岩体南部中段花岗岩晶质铀矿的标型特征。花岗岩的副矿物组合类型不同,晶质铀矿的产出特点以及某些矿物学特征也存在差异。晶质铀矿的含量、产状、粒度、晶形、晶胞参数及含氧系数等可反映出岩浆中的铀浓度、U~(4 )和UO_2~(2 )所占份额、氧逸度特点及其变化趋势的定性信息。

THE STUDY ON THE TYPOMORPHIC FEATURES OF URANINITE IN THE MIDDLE PART OF SOUTHERN ZHUGUANGSHAN GRANITE MASSIF

on the basis of the association types of granitic accessory minerals, and by the analysis on the typomorphic features of the crystal shape of uraninite, the typomorphic features of uraninite in the middle part of southern Zhuguangshan granite massif have been studied. The occurrence and mineralogy features of uraninite change along with the association types of accessory minerals in granite. The qualitative information in the characteristics and changing tendency of the uranium (including U~(4 ) and UO_2~(2 )) concentration and oxygen fugacity in magma may be reflected by the content, occurrence, size, crystal shape, unit-cell parameter and oxygen coefficient of uraninite.