Formula: MnAsO3(OH) . H2O
Origin of name: For F. Kraut, French mineralogist
Crystal system: Monoclinic
Crystal class: 2
Twinning:
Unit cell: a = 8.012, b = 15.956, c = 6.8, β = 96.6°
Colour: Pink, light pink
Diaphaneity:
Luster:
Habit: Cleavage lamellae to 2 mm
Hardness: 4
Specific gravity: 3.30
Cleavage: 3; {010} micaceous, {-101} good, {101} distinct
Tenacity:
Streak: White
Synonyms/varieties:
Comments:
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