Namibite

Formula: Cu(BiO)2VO4(OH)

Origin of name: after locality Namib desert, Namibia

 

Crystal system: monoclinic

Crystal class: 2/m

Twinning: 

Unit cell: 

 

Colour: dark green

Diaphaneity: 

Luster: 

Habit: crystals platy, to 2 mm, tabular to columnar crystals to 0.3 mm in spherical aggregates

Hardness: 4.5 to 5

Specific gravity: 6.86

Cleavage: 2; {001} perfect, {100} good

Tenacity: 

Streak: pistachio green

 

Synonyms/varieties:

 

Comments: 

 

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