Mineral Name

Magnetite

Chemical Formula

Fe3O4

Creator

Preview

Color

reddish-gray, black, blackish-red

Class

Article

Luster

metallic to earthy

Diaphaneity

opaque

Hardness

6.5

Cleavage

None

Fracture

conchoidal

Density

5.3

Crystal Shape

octahedral crystals, more rarely dodecahedral. Usually found granular massive.

Crystal System

Isometric

Comments

strongly magnetic

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