Australasia Australia Western Australia 3682 Foggite, Montgomeryite, Variscite, Near Milgun Station, Western Australia October 27, 2019
Nevada North and Central Americas United States 5316 Montgomeryite, Red House Barite Mine, Humboldt Co., Nevada September 29, 2019
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
