摘要
产出在华南上震旦一下寒武统含铀建造中的BF碳硅泥岩型铀矿床矿石品位富并具层控矿床地质特征.对该矿床的矿体分布规律、矿石中造岩元素、稀土及微量元素的地球化学特征、黄铁矿硫同位素组成、铀赋存状态及矿石构造特点等方面的研究表明,BF铀矿床属后生成因.含氧偏酸性的地下循环水在后生成矿过程中对含铀建造中的成矿元素(铀)起着活化再分配的后生富集作用.
The BF uranium deposit is one of the stratabound carbonate-siliceous-pelitic uranium deposits controlled by the Upper Sinian Series——low Cambrian Series uranium bearing formation. On the basis of detailed research on the distrioution regularity of ore bodies, the geochemical characteristics of rock-forming elements, REE and trace elements in country rock and ore, the S isotope composition and the existential forms of uranium in ores, it has been demonstrated that BF uranium deposit is attributed to epigenetic genesis. The uranium-rich ore bodies are resulted from multiple-transtormation and reconcentration of early diagenetic uranium mineralization by oxygen-bearing ground water.
出处
《地质找矿论丛》
CAS
CSCD
1993年第4期95-104,共10页
Contributions to Geology and Mineral Resources Research
