Scotlandite

Formula: PbSO3

Origin of name: after locality Scotland

 

Crystal system: monoclinic

Crystal class: 2/m

Twinning:

Unit cell: 

 

Colour: yellowish to grayish white to colourless

Diaphaneity: 

Luster: adamantine

Habit: crystals chisel-shaped or bladed, to 1 mm, in fan-shaped aggregates

Hardness: 2

Specific gravity: 6.37

Cleavage: 2; {100} perfect, {010} good

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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