Formula: PbAl2(CO3)2(OH)4 . H2O
Origin of name: Locality; Dundas, Tasmania, Australia
Crystal system: Orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell: a = 9.08 Å, b = 16.37 Å, c = 5.62 Å
Colour: White
Diaphaneity:
Luster: Vitreous to silky
Habit: Crystals radiating forming small rounded aggregates; matted crusts
Hardness: 2
Specific gravity: 3.41 to 3.55
Cleavage: 1; {010} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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