1780 Bertrandite, Biermann’s Quarry, Bethel, Connecticut, USA September 22, 2019 Steve Connecticut North and Central Americas United States
Asia Kazakhstan 5504 Bertrandite, Pyrite, Quartz, Sphalerite, Kara-Oba W deposit, Betpakdala Desert (Bet-Pak-Dal Desert), Karagandy Province (Qaragandy Oblysy; Karaganda Oblast’), Kazakhstan October 5, 2019
Australasia Australia New South Wales 1341 Bertrandite, Triple Chance Beryllium Mine, Thackaringa, New South Wales August 31, 2021
