Microbe in the Shihongtan Uranium Deposit and Their Metallogenic Significance

Key words: 
• Shihongtan uranium deposit /
• microbe /
• isolation and identification /
• sulfatereducing bacteria /
• biomineralization

Abstract: By using biological method，microorganisms in the Shihongtan uranium deposit were isolated and identified, and using sulfatereducing bacteria effected on uranium in the deposit underwater. The simulation experiment of the function of microorganisms during the formation of uranium deposit could be done by the waterrockbacteria threephase experiment system. The result showed that the distribution of the main microbe groups in the subzones were different and the geochemical characteristics was obvious to show that uranium could be reduced and precipitated by sulfatereducing bacteria through metabolism function. The result of the reductive reducing experiment indicated that sulfatereducing bacteria could absorb organic carbon as nutrition materials to grow, at the same time, uranium was reduced and precipitated.