Formula: Mn(C2O4)·2H2O
Origin of name:
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell: a = 11.955, b = 5.632, c = 9.967, β = 128.34°
Colour: White to gray-white
Diaphaneity: Transparent
Luster: Vitreous
Habit: Short prismatic crystals after trihydrite and aggregates of platelets
Hardness: 2.5
Specific gravity: 2.1 (measured), 2.356 (calculated)
Cleavage: [010] perfect
Tenacity: Brittle
Streak: White
Synonyms/varieties:
Comments: Secondary mineral associated with phosphates in a granite pegmatite
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