Formula: MnFe2(PO4)2(OH)2 . 8H2O
Origin of name: For Max von Laue, German physicist
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell: a = 5.28 Ǻ, b = 10.66 Ǻ, c = 7.14 Ǻ, α = 107.9°, β = 111.0°, γ = 71.1°
Colour: Honey-brown, yellowish orange
Diaphaneity:
Luster: Vitreous
Habit: Crystals wedge-shaped, to 2 mm
Hardness: 3
Specific gravity: 2.44 to 2.49
Cleavage: 1; {010} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments: Dimorphous with stewartite
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