Delafossite

Formula:  CuFeO2

Origin of name:  For G. Delafosse, French mineralogist

 

Crystal system:  Hexagonal

Crystal class:  -3 2/m

Twinning:

Unit cell:

 

Colour:  Black

Diaphaneity:  Opaque

Luster:  Metallic

Habit:  Crystals tabular to equant; massive; botryoidal, spherulitic

Hardness:  5.5

Specific gravity:  5.41

Cleavage:  1; {10-10} imperfect

Tenacity:

Streak:  Black

 

Synonyms/varieties:

 

Comments:

 

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