Location: Chat Chee Mogok Myanmar.
Comment: Named after Pollux, the Castor and Pollux duo of Gods. Castor has Castorite/ Petalite, and Pollux has Pollucite. Pollucite is the only mineral that gives us the Rare Earth element Ceasium,and sometimes Rubidium. It rarely has a gem quality, or a size that can be cut into gems.A collectors gem.