Formula: Pb3Cl2O2
Origin of name: From locality; Mendip Hills, Somersetshire, England
Crystal system: Orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: Colourless, white to gray; yellowish, bluish or reddish tint
Diaphaneity: Transparent to translucent
Luster: Adamantine to resinous on fractures
Habit: Massive, columnar or fibrous, radiated
Hardness: 2.5
Specific gravity 7.24:
Cleavage: 3; {110} perfect, {100} and {010} distinct
Tenacity:
Streak: White
Synonyms/varieties:
Comments:
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