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n.1.(Min.) A metallic mineral, a selenide of copper and silver; - so called by Berzelius on account of its being found soon after the discovery of the metal selenium.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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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.