Lincang Superlarge Germanium Deposit in Yunnan Province, China: Sedimentation, Diagenesis, Hydrothermal Process and Mineralization

摘要

The mineralizations is related closely to sedimentation, diagenesis and hydrothermal processes. In this paper, investigations are carried out on coal occurrence, maceral composition, inorganic Minerals, trace elements and huminite reflectance. It is concluded that the source of Lincang su- Perlarge deposit is mainly the muscovite granite in the west edge of the basin. During sedimenta- Tion, Ge(germanium) was leached out and entered the basin. Ge was adsorbed by lower organism And humic substances in water. Lincang lignite underwent three thermal processes: peatification, Early diagenesis and hydrothermal transformation.