Romarchite

Formula: SnO

Origin of name: initial of Royal Ontario Museum and archaeology

 

Crystal system: tetragonal

Crystal class: 4/m 2/m 2/m

Twinning:

Unit cell: 

 

Colour: black

Diaphaneity: 

Luster: 

Habit: minute crystals, thin crusts

Hardness

Specific gravity

Cleavage: none

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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