Schöllhornite

Formula: Na0.3CrS2.H2O

Origin of name: for Robert Schöllhorn, German chemist

 

Crystal system: hexagonal

Crystal class: 3m, -3 2/m or 32

Twinning:

Unit cell: 

 

Colour: gray

Diaphaneity: 

Luster: submetallic

Habit: grains to 250 micron, thin bands

Hardness: 1.5 to 2

Specific gravity: 2.70

Cleavage: 

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: from a meteorite

 

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