crookesite

== English == === Etymology === From Crookes +‎ -ite, named after British chemist and physicist Sir William Crookes. === Noun === crookesite (mineralogy) A tetragonal-disphenoidal mineral containing copper, selenium, silver, and thallium. === References === David Barthelmy (1997–2026), “Crookesite”, in Webmineral Mineralogy Database.