These galena crystals are 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 sulfides like galena. Galena contains the elements PB, S. These galena crystals are spinel twins with a bright silver and a metallic luster. They are accompanied by quartz and muscovite. The piece can be displayed from either side. This piece measures 3 5/8 x 2 5/16 x 1 1/2 inches or 92 x 60 x 38 mm.