GERMANIUM OCCURRENCE IN LINCANG SUPERLARGE DEPOSIT IN YUNNAN, CHINA

A heavy-media separation has been carried out to study the partition o f germanium in various macefals of mineralized lignites in Lincang sup erlarge germanium deposit in Yunnan, China. The result shows that Ge s lays predominantly in huminites, especially in corpohuminites (86.04%- 89.16%), next in light macerals and minerals (3.20%-8.33% and 1.71%-10 .27%, respectively). In addition, the EPMA and PIXE analyses suggest t hat no germanium minerals have been detected and Ge is well distribute d in the whole mineralized lignite, bonding to , C and H of coaly orga nic matter of mineralized lignites.