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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
Group: Jahnsite group. Whiteite subgroup
IMA Number: 1987-048
References: CM 27 (1989), 447; HB4 (2000)
Type Locality: Mangualde pegmatite, Viseu distr., Beira Alta, Portugal

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