Number 8

Color--------------------Black

Luster------------------Metallic, dull to shiny

Streak------------------Black to brownish black

Hardness--------------5.5 - 6.5

Cleavage/-------------Fracture, rough
Fracture

S.G.---------------------4.9 - 5.2

Special Properties---It will attract to a magnet

Formula-----------------Fe3O4

Mineral Name---------Magnetite

Family-------------------Oxides

Uses---------------------Very important ore of iron

Magnetite