5533 Robertsite, Montgomeryite, Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA October 5, 2019 Steve North and Central Americas South Dakota United States Type Locality for robertsite. Ex John Lewis collection.
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 United States ncat JP2341, Robertsite, White Elephant Mine, Cicero Peak, Pringle, Custer District, Custer Co., South Dakota, USA September 23, 2019
Australasia Australia Western Australia 3682 Foggite, Montgomeryite, Variscite, Near Milgun Station, Western Australia October 27, 2019
Europe Spain 1690 Montgomeryite, Santa Maria de Montcada, Barcelona, Catalonia, Spain September 22, 2019
