Brucite is hexagonal crystallization mineral composed of native magnesium
hydroxide and native magnesium hydroxide occurs in serpentines and impure li-
mestone, hardness is 2.5 on Moke scale and specific gravity is 2.38-2.40.Bru-
cite is a semi-rare mineral,which had not been found in China on large scale before. Since mid 1990's, large deposit of brucite has been found in China,
most commercialy valued mines are located in Fencheng city(formerly a county
of Dandong). Up to now, over 4 million tons of reserve has been found in Fen-
gcheng.

Uses

    Brucite is often used as flame retardant filler in plastic industry and
paper-making industry; as additive in chemical fertilizer and in steel-making
industry. Brucite is also used inmagnesium industry, medical industry, and n-
uclear industry etc.