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ATHENA

MINERALOGY

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Mineral:RITTMANNITE
Formula:(Mn2+,Ca)Mn2+(Fe2+,Mn2+)2(Al,Fe3+)2(PO4)4(OH)2 · 8H2O
Crystal System:Monoclinic
Strunz Nr:7/D.29-40
Group:Jahnsite group
References:CM 27 (1989), 447; HB4 (2000)
Type Locality:Mangualde pegmatite, Viseu distr., Beira Alta, Portugal

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