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Formula: NaCaMn2+3(PO4)3
Anhydrous normal phosphate, alluaudite group, forms a series with
hagendorfite, manganese-bearing mineral
Crystal System: Monoclinic
Specific gravity: 3.5 measured, 3.89 calculated
Hardness: 5
Streak: Greenish white
Colour: Dark olive-green
Environments
Pegmatites
Sedimentary environments
Varulite occurs in complex granite pegmatites, either as a
primary mineral or as an alteration product of
triphylite–lithiophilite;
it also occurs as nodules in shale.
Alluaudite is an
associated mineral (HOM).
Localities
At the type locality, Varuträsk, Skellefte mining district, Västerbotten, Sweden, varulite occurs in a
granite
pegmatite
(Mindat).
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