chemical product ,Brucite is a mineral that is not often used as a mineral specimen but does have some important industrial uses.It is a minor oreof magnesium metal and a source of magnesia.It is also used as an additive in certain refractories.

PHYSICAL CHARACTERISTICS:
Color is thite or colorless with shades of gray,blue and green
Luster is vitreous or waxy;cleabage surfaces have a pearly luster
Transparency Crystals are translucent and rarely transparent
Crystal System is trigonal;bar 32/m
Hardness is 2-2.5
Specific Gravity is 2.4(slightly below average)
Streak is white