crookesite


Also found in: Wikipedia.

crookesite

[′kru̇k‚sīt]
(mineralogy)
(Cu,Tl,Ag)2Se An important selenium mineral occurring in lead-gray masses and having a metallic appearance.
References in periodicals archive ?
Associated minerals are: berzelianite, bellidoite, cadmoseite (mercurian and cuprian), chameanite, crookesite, eskebornite, eucairite, ferroselite, hakite, klockmannite, a luanheite-type phase, trogtalite-krutaite, tiemannite, tyrellite, umangite and uraninite.