These fluorite on sphalerite is from the Elmwood Mine in Carthage, Smith County, Tennessee, Ba-F-Pb-Zn District, Tennessee, US. This mine contains three shafts called the Elmwood, Cumberland, and Gordonsville. It has an entry slope called the Stonewall. They contain eleven different minerals including sphalerite which is the main ore mineral. Galena is a common accessory mineral associated with the sphalerite. It is a sulfide mineral and it is the most common source of lead. It contains the elements Pb and S. This is a complex multi-terminated cubic crystal. The crystal has hoppered, skeletal, growth on all sides with a small attachment point at the base. It has a silver color and metallic luster. Some prism faces have a light iridescence There are some small dolomite crystals on the galena also. This piece measures 1 x 15/16 x 7/8 inches or 25 x 24 x 22 mm.