Nevada North and Central Americas United States 5316 Montgomeryite, Red House Barite Mine, Humboldt Co., Nevada September 29, 2019
Australasia Australia Western Australia 9092 JP2758 Montgomeryite, Hydroxylapatite, Crandallite, Collinsite?, Milgun Variscite Mine (Mount Deverell), Milgun Station, Meekatharra Shire, Western Australia June 12, 2024
North and Central Americas South Dakota Type Locality United States 7372 JL3695 Tiptopite, Roscherite, Montgomeryite, Tip Top Mine (Tip Top pegmatite), Fourmile, Custer Mining District, Custer Co., South Dakota, USA December 28, 2020
Europe Spain 2051 Montgomeryite, Crandallite, Montcada, Barcelona, Catalonia, Spain September 22, 2019
