Occurrence of prismatine at the Zhongshan Station area, East Antarctica, and the changes of its definition
Prismatine含义的变化及其在南极中山站区的产出

A brief history of the name prismatine has been given in the paper. It is pointed out that the B content in one of the tetrahedrals of kornerupine varies between 0 and 1 (per formula unit of 22 (O, OH, F) ), being accompanied by the changing mineralogical properties such as composition, crystal structure and mineral association at its occurrence. Two distinct minerals are defined by the critic of B = 0. 5, i. e., kornerupine sensu stricto (Krnss) if B < 0. 5, including the boron-free (B = 0) Krnss end-member, and prismatine if B > 0. 5. Accordingly, the analogue (B = 0. 89) near Zhongshan Station of China at East Antarctica is prismatine which is unique in its abundance and occurrence even in the world. The corresponding Chinese names of the minerals are recommended.