This sphalerite and mineral mix is from the Huaron Mining District of the Huallay District, Pasco Department, Peru. This area contains 15 mines including the Alimon which is where most mineral specimens come from. The mines are large commercial operations for the extraction of silver and silver related minerals. Twenty-one different mineral species are found in this area including several exceptional examples of; sphalerite, pyrite, quartz and calcite.This is a high quality piece that is well balanced and in excellent condition. It consists of a quartz-sulfide matrix that is topped with sphalerite ( spinel and interpenetration twins), quartz, pyrite and calcite crystals. This piece measures 3 3/8 x 2 5/8 x 1 3/8 inches or 86 x 67 x 35 mm.