Formula: (Na,Li)Mn4Si5O14(OH)
Origin of name: from natrium = sodium and nambulite
Crystal system: triclinic
Crystal class: 1 or -1
Twinning:
Unit cell:
Colour: pinkish orange
Diaphaneity:
Luster: vitreous
Habit: coarse-grained aggregates to 7 mm
Hardness: 5.5 to 6
Specific gravity: 3.51
Cleavage: 2; {100} and {001} perfect
Tenacity:
Streak: white, faint orange tint
Synonyms/varieties:
Comments: series with nambulite
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