Gupeiite

Formula: Fe3Si

Origin of name:   For Gupeikou, the eastern passageway of the Great Wall of China

 

Crystal system:  Cubic

Crystal class:  4/m -3 2/m

Twinning:

Unit cell:

 

Colour:  Steel-gray

Diaphaneity: Opaque

Luster:  Metallic

Habit:

Hardness:   5

Specific gravity:  7.15

Cleavage:  None

Tenacity:

Streak:  Black

 

Synonyms/varieties:

 

Comments:  Strongly magnetic

 

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