Formula: MnPO4
Origin of name: from Latin purpura = purple
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: deep rose to reddish purple, dark brown to brown from alteration
Diaphaneity: subtranslucent to opaque
Luster: dull to satiny
Habit: massive
Hardness: 4 to 4.5
Specific gravity: 3.64 to 3.69
Cleavage: 2; {100} good, {010} imperfect
Tenacity:
Streak: reddish purple
Synonyms/varieties:
Comments: series with heterosite
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