7372 JL3695 Tiptopite, Roscherite, Montgomeryite, Tip Top Mine (Tip Top pegmatite), Fourmile, Custer Mining District, Custer Co., South Dakota, USA December 28, 2020 Steve North and Central Americas South Dakota Type Locality United States Type Locality for tiptopite. Acquired by Joan Lamond from Peter Elliott for $10.00.
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
Australasia Australia Western Australia 3682 Foggite, Montgomeryite, Variscite, Near Milgun Station, Western Australia October 27, 2019
Australasia Australia Western Australia 9137 JP2703 Hydroxylapatite, Montgomeryite, Milgun Variscite Mine (Mount Deverell), Milgun Station, Meekatharra Shire, Western Australia September 23, 2019