WORLDKINGS - Worldkings News - America Records Institute (AMRI) Tanco Mine: Largest pollucite mine in the world
(WorldKings.org) TANCO currently has 82% of the world's known reserves of pollucite.
WORLDKINGS - Worldkings News - America Records Institute (AMRI) – Tanco Mine: World's largest producer of caesium
(Worldkings.org) With an estimated average global use of 30,000 kg/year the reserves of the mine would last for 2,000 to 3,000 years. The mined pollucite contains approximately 24% Cs2O. The ore body is 1400 m long, 600 m wide and 100 m deep. For several decades the pegmatites at Bernic Lake have supplied the world with the needed caesium.