摘要
本文在研究361铀矿床碱质交代、蚀变花岗岩特征的基础上,阐明了本区花岗岩的后期多次改造,并指出了各碱质交代、蚀变在铀成矿过程中的作用,以及它所造成的岩石分带性。同时,也计算了各铀源体的浸出率,指出铀主要来自赋矿围岩——γ_5^(1-1)和δγ_5^(1-2)花岗岩。
Besed on a study of alkali metasomatism and alteration of granites in No. 361 uranium deposit, the authors point out in this paper that granites in this area have experienced multiphase post-diagenetic reformation; they also describe the role of various sorts of alkali metasomatism and alteration in mobilization, transfer and enrichment of uranium during the ore-forming process and the metasomatic and alteration zonation of rocks that resulted from these activities. The leaching ratios of various granitic uranium sources and the amounts of uranium they could respectively provide were calculated. These data combined with REE analyses suggest that uranium was mainly derived from host rock——γ_5^(1-1) and δγ_5^(1-2) granites.
出处
《矿床地质》
CAS
CSCD
北大核心
1993年第3期253-264,共12页
Mineral Deposits
