1780 Bertrandite, Biermann’s Quarry, Bethel, Connecticut, USA September 22, 2019 Steve Connecticut North and Central Americas United States
Australasia Australia New South Wales 1341 Bertrandite, Triple Chance Beryllium Mine, Thackaringa, New South Wales August 31, 2021
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
