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Rittmannite

Type Locality
Cubos-Mesquitela-Mangualde area, Mangualde, Viseu District, Portugal
Mineral Data
{(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Physical Properties
Hardness: 
3.5
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