Formula: NaCaMn2+Fe2+2(PO4)3
Anhydrous phosphate, alluaudite group, forms a series with
varulite,
manganese-bearing mineral
Crystal System: Monoclinic
Specific gravity: 3.71 measured, 3.84 calculated
Hardness: 3½
Streak: Grey-green
Colour: Greenish black
Environments
Pegmatites
Sedimentary environments
Hagendorfite is a manganese-bearing phosphate.
At the type locality, the Hagendorf South Pegmatite, Waidhaus, Upper Palatinate, Bavaria, Germany,
hagendorfite occurs in a granite
pegmatite (Mindat, Webmin, HOM). It also occurs
in phosphatic nodules in
shale (Webmin, HOM).
Associated minerals include wolfeite,
hematite and triphylite
(Mindat, Dana,HOM).
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