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Formula: (NaCa2)Mn2+2(AsO4)3
Anhydrous arsenate,
berzeliite group, forms a series with
berzeliite,
manganese-bearing mineral
Crystal System: Isometric
Specific gravity: 4.28 to 4.46 measured, 4.38 calculated
Hardness: 4½ to 5
Streak: White to orange
Colour: Yellow-orange, yellowish red; colorless to orange in transmitted light.
Solubility: Readily soluble in nitric or hydrochloric acid
Environments:
Manganberzeliite occurs in metamorphosed manganiferous
skarns
(Webmin).
At the type locality, Långban, Filipstad, Värmland, Sweden, manganberzeliite occurs in a metamorphosed
manganese deposit,
associated with manganese-rich biotite,
hausmannite,
rhodonite, tephroite,
pyrochroite,
bergslagite,
caryinite, richterite,
hedyphane, sarkinite,
eveite, tilasite,
baryte and
calcite
(Mindat, HOM).
At Franklin, New Jersey, USA, manganberzeliite occurs in a metamorphosed stratiform zinc orebody,
associated with
sarkinite, hedyphane,
schallerite,
franklinite,
willemite and calcite
(HOM).
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