Rickardite is a telluride mineral, a copper telluride (Cu7Te5)Mindat or Cu3-x (x = 0 to 0.36)Te2.Handbook of Mineralogy It was first described for an occurrence in the Good Hope Mine, Vulcan district, Gunnison County, Colorado, US,Webmineral and named for mining engineer Thomas Arthur Rickard (1864–1953). It is a low temperature hydrothermal mineral that occurs associated with vulcanite, native tellurium, cameronite, petzite, sylvanite, berthierite, pyrite, arsenopyrite and bornite.
See also List of minerals
References
D. M. Chizhikov and V. P. Shchastlivyi, 1966, Tellurium and Tellurides, Nauka Publishing, Moscow