5316 Montgomeryite, Red House Barite Mine, Humboldt Co., Nevada September 29, 2019 Steve Nevada North and Central Americas United States
North and Central Americas South Dakota United States 5533 Robertsite, Montgomeryite, Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA October 5, 2019
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
Australasia Australia Western Australia 9137 JP2703 Hydroxylapatite, Montgomeryite, Milgun Variscite Mine (Mount Deverell), Milgun Station, Meekatharra Shire, Western Australia September 23, 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
