Zincochromite

Formula: ZnCr2O4

Origin of name: from zinc and Chromite

 

Crystal system: Cubic/Isometric

Crystal class: 4/m -3 2/m

Twinning:

Unit cell: a = 8.352

 

Colour: Brownish- black

Diaphaneity: Translucent to opaque

Luster: Submetallic

Habit: Euhedral crystals

Hardness: 5.8

Specific gravity:

Cleavage: None

Tenacity:

Streak: Brown

 

Synonyms/varieties:

 

Comments: Zn analogue of chromite

 

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