Formula: PbCa2Al(F,OH)9
Origin of name: For calcium and aravaipaite
Crystal class: Unknown
Colour: Colourless, white
Diaphaneity: Transparent
Habit: Forms rectangular, twinned crystals to 0.5 x 0.3 x 0.7 mm and compact, white massive form
Hardness: 2.5
Specific gravity: 4.85
Cleavage: 1; {100} good
Streak: White
Synonyms/varieties:
Comments:
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