A beautifully bifurcated specimen, hundreds of UV-reactive scalenohedral crystals of yellow Calcite, many double-terminated cover one side, lustrous and terminated Sphalerite on the other. This fine mineral specimen sits perfectly and presents completely differently on each side. Truly unique! Elmwood Mine, Carthage, Smith County, Tennessee, USA.3.5" x 1.5" x 2.6", 10 oz.