pollucite

== English == === Etymology === From Pollux +‎ -ite, named after Pollux, the twin of Castor, as it is often found associated with castorite (now petalite). === Noun === pollucite (plural pollucites) (mineralogy) A colorless transparent mineral of the zeolite family consisting of hydrous cesium aluminum silicate and occurring massive or crystallizing in cubes. === Further reading === David Barthelmy (1997–2026), “Pollucite”, in Webmineral Mineralogy Database. “pollucite”, in Mindat.org, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026. “pollucite”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.