Formula: Pb
Origin of name: Old English word for the substance
Crystal system: Cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell: a = 4.951 Ǻ
Colour: Gray-white
Diaphaneity:
Luster: Metallic, tarnishes lead-gray
Habit: Crystals octahedral or cubic or dodecahedral, rare; massive, thin plates, wires, dendritic, rounded masses
Hardness: 1.5
Specific gravity: 11.347 to 1.35
Cleavage: None
Tenacity: Malleable, ductile
Streak: Lead-gray
Synonyms/varieties:
Comments:
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