North and Central Americas South Dakota United States ncat JP345 Montgomeryite, Whitlockite, Fluorapatite, Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA January 27, 2023
Europe Spain 1690 Montgomeryite, Santa Maria de Montcada, Barcelona, Catalonia, Spain September 22, 2019
Europe Spain 2051 Montgomeryite, Crandallite, Montcada, Barcelona, Catalonia, Spain September 22, 2019
Australasia Australia Victoria 0926 Parwanite, Taranakite, Montgomeryite, Parwan Cave, near Bacchus Marsh, Victoria September 20, 2019
