含金地质体表生带中主要微生物类群的研究

通过对16个含金矿区主要微生物类群的分布、生态结构的研究,发现不同类型的金矿具有不同的微生物类群.金矿矿石与金矿酸水中的自养硫细菌和异养菌分布具有明显差异,酸性水中含自养硫细菌较多,含异养菌极少;金矿氧化带中的异氧菌一般多于自氧硫细菌,其优势菌以芽孢杆菌属中蜡状芽孢杆菌为主.研究结果揭示了金矿中存在的主要微生物类群,对阐明表生金的形成、成岩和蚀变作用具有一定的意义,对发掘生物湿法冶金菌种资源具有重要作用.

STUDY ON MAIN MICROBE GROUP IN SUPERGENE ZONES OF GOLD-CONTAINING GEOLOGIC BODIES

It was found that there are different microbe groups in different types of gold ore after the study of the distribution and microbial ecosystem of main microbe groups in 16 gold-containing mining districts. It is apparently different that the distribution of autotrophic sulphur bacteria and heterotrophic bacteria in the gold ore and in the acid mine water. There are more autotrophic bacteria in the acid mine water, but generally more heterophic bacteria in the oxidization zone of gold ore bodies. The dominant bacteria in the oxidization zone of gold ore bodies are mainly the Bacillus cereus of the genus Bacillus. The present paper reveals that main microbe groups in different gold ore bodies have particular significance to expound the formation and diagenesis and alteration of supergene gold ore, and have also the importance to find the bacterium resources for biological wet metallurgy.