Class : Phosphates, arsenates, vanadates
    Subclass : Hydrated phosphates
    Crystal system : Orthorhombic
    Chemistry : Mn₃(PO₄)₂ 3H₂O
    Rarity : Rare to very rare

Reddingite is a secondary phosphate of granitic pegmatites, in which it forms by alteration of primary phosphates, usually triphylite or lithiophilite. Its name comes from its place of discovery : Redding in Connecticut (USA). Reddingite is usually massive, rarely in small pseudo-octahedral crystals, sometimes tabular, usually grouped in parallel aggregates. It is colorless or weakly tinted pale pink or pale yellow-brown; it becomes orange-brown by oxidation.

Main photo : Reddingite from Hagendorf pegmatites, Germany © Christophe Boutry

No known twinning for this mineral species.

No fakes listed for this mineral species.