Dims: 4.7 x 4.5 x 2.5" (11.9 x 11.4 x 6.4 cm)
Wt: 2 lbs., 11 oz. (1.218 kg)
Elmwood Mine, Carthage, Smith County, Tennessee, U.S.A.
A large cluster of warped and intergrown Sphalerite crystals rests on the gray limestone base of this specimen. These crystals are generally in good condition (only a few small areas on the edge of the cluster are damaged) but are so heavily intergrown that it is almost impossible to tell where one ends and another begins. Due to intergrowth and probable twinning, their individual forms are also nearly impossible to make out. However, there are many small but straight edges and clean faces present. All have a dark brown coloration and a bright, adamantine luster, and are essentially opaque. Several small dogtooth calcites rest on the Sphalerite cluster (all but three are broken and incomplete), along with several very small fluorites. The gray host rock is made of a dolomitic limestone and has a hollow in which rest several tiny, white dolomite crystals.