Formula: (Na,Ca)Mn(Mn,Fe,Fe)2(PO4)3
Origin of name: after locality, Varuträsk pegmatite, Boliden mine, Skelleftea, Vasterbottea, Sweden
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell: a = 11.91, b = 12.54, c = 6.46, β = 114.98°
Colour: Dull yellowish green
Diaphaneity: Translucent
Luster: Vitreous
Habit: Massive, granular
Hardness: 5
Specific gravity: 3.58
Cleavage: 2; {001} good, {010} distinct
Tenacity:
Streak: Greenish white
Synonyms/varieties:
Comments: series with hagendorfite
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