Chaméanite

Formula:  (Cu,Fe)4As(Se,S)4

Origin of name:  From locality, Chaméane, France

 

Crystal system:  Cubic

Crystal class:  Unknown

Twinning:

Unit cell: a = 11.039 Å

 

Colour:  Gray in reflected light

Diaphaneity:  Opaque

Luster:  Metallic

Habit:  In myrmekite-like intergrowths with giraudite

Hardness:  4

Specific gravity:  6.17

Cleavage:  None

Tenacity:

Streak:

 

Synonyms/varieties:

 

Comments:  From polished section only?. Formed in late stage deposits in veins cutting granite.

 

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