Number 12

Color--------------------Clear

Luster------------------Nonmetallic, glassy

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

Hardness--------------4.0

Cleavage/--------------Cleavage, perfect in 4 directions
Fracture                    octohedral cleavage

S.G.---------------------3.2

Special Properties---Has a wide range of color

Formula----------------CaF2

Mineral name---------Fluorite

Family------------------Halides

Uses--------------------Manufactureing steel

Fluorite