Dims: 3.9" x 2.4" x 0.8" (9.9 x 6.1 x 2.0 cm)
Wt: 5.21 oz. (147.8 g)
Hardin County, Illinois, U.S.A.
Actually a very simple specimen, this piece consists of 3 clusters of intergrown Sphalerite crystals on a dolomite-covered limestone base. The largest of these clusters has dimensions of 0.9 x 0.7 x 0.6" (2.3 x 1.8 x 1.5 cm), and consists of two crystals that are only slightly smaller than the cluster itself. The other clusters do not consist of more than 3 intergrown crystals. All of these crystals have a black color with brown highlights visible on the few tiny patches of damage. They are opaque and have a bright, adamantine luster. There are also a few very small individual crystals scattered on the host rock, which is covered with dull, dirty-white dolomite crystals. These crystals show a considerable amount of wear, but not a lot of human-induced damage. They have a curved, short bladed form and a dull luster. On one side of the specimen, a dark brown, powdery-looking substance obscures a substantial nuSPH-16