Formula: NaMnPO4
Origin of name: from natrium = sodium and Greek for friend
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: yellow
Diaphaneity: transparent to translucent
Luster: bright resinous, pearly on good cleavage
Habit: crystals stout prismatic, rare, massive, granular or cleavable
Hardness: 4.5 to 5
Specific gravity: 3.41
Cleavage: 3; {100} good, {010} indistinct, {021} interrupted
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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