fairfielditeMin.|ˈfɛəfiːldaɪt| [Named in 1879 by Brush and Dana after Fairfield, the county (in Connecticut) where it was found: see -ite.] A hydrous phosphate of calcium, manganese, and iron. 1879Amer.Jrnl.Sc. 3rd Ser. XVII. 359 Fairfieldite occurs generally in massive crystalline aggregates.