Osarizawaite

Formula: PbCuAl2(SO4)2(OH)6

Origin of name: after locality Osarizawa mine, Akita Prefect, Japan

 

Crystal system: hexagonal

Crystal class: -3 2/m

Twinning: 

Unit cell: a = 7.05 Å, c = 17.03 Å

 

Colour: greenish yellow

Diaphaneity: 

Luster: earthy

Habit: crystals minute, hexagonal outline, in friable aggregates

Hardness

Specific gravity: 4.04

Cleavage: 

Tenacity: brittle

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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