Formula: K(Li,Mn)2Al4Si4O12(OH)4(F,OH)4
Origin of name: composition (K) and relationship to carpholite
Crystal system: Orthorhombic
Crystal class: m m m
Twinning:
Unit cell: a = 13.715, b = 20.302, c = 5.138
Colour: White to straw-yellow
Diaphaneity:
Luster: Vitreous
Habit: Irregular tufts of radiating acicular crystals
Hardness: ~5
Specific gravity: 3.08
Cleavage: [010 perfect parallel
Tenacity: Irregular fracture, brittle
Streak: White
Synonyms/varieties:
Comments:
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