Rickardite | |
Category: | Telluride mineral |
Formula: | Cu7Te5 |
Imasymbol: | Rkd[1] |
Strunz: | 2.BA.30 |
System: | Orthorhombic |
Class: | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
Symmetry: | Pmmn |
Color: | Red-violet (fresh), darkens |
Luster: | Metallic |
Streak: | Red |
Diaphaneity: | Opaque |
Rickardite is a telluride mineral, a copper telluride (Cu7Te5)[2] or Cu3-x (x = 0 to 0.36)Te2.[3] It was first described for an occurrence in the Good Hope Mine, Vulcan district, Gunnison County, Colorado, US,[4] and named for mining engineer Thomas Arthur Rickard (1864–1953).[2] It is a low temperature hydrothermal mineral that occurs associated with vulcanite, native tellurium, cameronite, petzite, sylvanite, berthierite, pyrite, arsenopyrite and bornite.[3]