Number 16

Color--------------------White with brown streaks

Luster------------------Nonmetallic, pearly

Streak------------------White

Hardness--------------3.0 - 3.5

Cleavage/--------------Cleavage, 3 directions but hard to
Fracture                    tell

S.G.---------------------4.3 - 4.6

Special Properties---Very heavy nonmetallic mineral.

Formula----------------Ba(SO4)

Mineral name---------Barite

Family------------------Sulfates

Uses--------------------For heavy oil well drilling muds and manufacture of glass.

Barite