This 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 fluorite. It is a common gangue mineral associated with the sphalerite which is a sulfide (Zn and S) and the primary ore at the mine. This specimen consists of a dolomite crystal covered chert matrix that hosts a rosette of complex sphalerite crystals with a small cluster of dark purple fluorites attached. This piece measures 2 1/4 x 1 7/8 x 1 1/2 inches or 57 x 47 x 38 mm.