Formula: PbO
Origin of name: French name for lead oxide
Crystal system: Orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: Yellow, reddish yellow
Diaphaneity: Translucent
Luster: Oily to dull
Habit: Massive, earthy to scaly
Hardness: 2
Specific gravity: 9.642
Cleavage: 3; {100} and {010} distinct, {110} traces
Tenacity:
Streak: Yellowish, lighter than colour
Synonyms/varieties:
Comments: Dimorphous with litharge
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