Zincite

Formula: (Zn,Mn) O

Origin of name: from composition

 

Crystal system: Hexagonal

Crystal class: 6mm

Twinning: on {0001}

Unit cell: a = 3.250 Å, c = 5.207 Å

 

Colour: Deep yellow to orange-yellow to dark red

Diaphaneity:

Luster: Subadamantine

Habit: Crystals hemimorphic pyramidal, often corroded and rounded; massive platy, compact or granular

Hardness: 4

Specific gravity: 5.68

Cleavage: 2; {10-10}perfect; {0001} parting

Tenacity: Conchoidal; brittle

Streak: Orange-yellow

 

Synonyms/varieties:

 

Comments:

 

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