Formula: NaKMnSi4O10
Origin of name: From elements in composition
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: Colourless to creamy or rosy
Diaphaneity:
Luster: Vitreous
Habit: Irregular grains and aggregates
Hardness: 5
Specific gravity: 2.73
Cleavage: 2; {001} and {010} perfect
Tenacity:
Streak: White
Synonyms/varieties:
Comments: Mn analogue of fenaksite
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