Formula: PbCl2
Origin of name: For D. Cotugno (Cotunnius), Italian physician
Crystal system: Orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: Colourless, white, yellowish, greenish
Diaphaneity: Transparent to translucent
Luster: Adamantine
Habit: Crystals often flattened, elongated; massive, granular
Hardness: 2.5
Specific gravity: 5.88
Cleavage: 1; {010} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments: Soluble in water
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