Dims: 1.7 x 1.7 x 1.4" (4.3 x 4.3 x 3.6 cm)
Wt: 4.0 oz. (113.6 g)
Minerva Mine, Hardin County, Illinois, U.S.A.
At least 2 rounded, intergrown clusters of Witherite crystals rest on the white base rock of this specimen. These clusters are very warped and intergrown, so it is difficult to assess their actual dimensions. Each is made up of dozens of small hexagonal prismatic crystals that are generally in very good condition, as only a few are damaged or broken. These crystals are heavily intergrown also, so that one cannot accurately determine their size, but they all have excellent hexagonal prismatic form with well-defined edges, clean faces, and basal terminations. All have a dull cream color and a waxy luster, and are dimly transparent. They glow a dim blue under shortwave ultraviolet light. The clusters actually form a druse that is about 0.4" (1.0 cm) thick which partly covers what appears to be a massive calcite base.