fairfieldite
/ˈfɛːfiːldaɪt/Mineralogy
noun
A phosphate mineral typically found as greenish or yellowish-white prismatic crystals and crystal aggregates.
- Fairfieldite is a hydrated phosphate of calcium, manganese, and iron, Ca2(Mn,Fe)(PO4)2·2H2O. Crystal system: triclinic..
Origin
Late 19th century. From the name of FairfieldCounty, Connecticut, where the mineral was first identified + -ite.