algodoniteMin.|ælˈgɒdənaɪt| [named (1857) from Algodones, near Coquimbo + -ite.] A native arsenide of copper, Cu3As, of whitish colour and metallic lustre. 1837–80Dana Min. 37 A transported mass of mixed whitneyite and algodonite, weighing 95–100 lbs., was found on St. Louis R.