Formula: Pb2CuCl2(OH)4
Origin of name: From Greek for apart and from boléite
Crystal system: Tetragonal
Crystal class: 4mm
Twinning:
Unit cell: a = 5.869 Å, c = 5.495 Å
Colour: Sky-blue, deep blue
Diaphaneity:
Luster: Vitreous
Habit: Crystals tabular, square outline; thin plates forming aggregates; massive, finely crystalline
Hardness: 2.5
Specific gravity: 5.42
Cleavage: 1; {001} perfect
Tenacity: Conchoidal; brittle
Streak: Pale blue
Synonyms/varieties:
Comments:
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