Formula: PbO
Origin of name: From the Greek name for the compound
Crystal system: Tetragonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell:
Colour: Red
Diaphaneity: Transparent
Luster: Oily to dull
Habit: Crusts; alteration borders on Massicot
Hardness: 2 to 5
Specific gravity: 9.35
Cleavage: 1; {110} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments: Dimorphous with massicot
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