Formula : Mn22+,Fe2+[PO4]2 * 3 H2O
System: orthorhombic Hardness:3-3½ Rarity:very rare
Strunz id:VII/C.8-20 -
PHOSPHATES, ARSENATES and VANADATES
Name origin: Named in honour of Professor José Marques Correia Neves (1929-2011), mineralogist from Portugal, for his detailed studies of Brazilian pegmatites.
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