Dims: 2.6 x 2.4 x 1.3" (6.6 x 6.1 x 3.3 cm)
Wt: 6.64 oz. (188.2 g)
Minerva Mine, Hardin County, Illinois, U.S.A.
A thick crust of crystalline Witherite rests on the carbonate-bearing host rock of this specimen. The crust is made up of scores of intergrown pseudohexagonal prismatic Witherite crystals that are generally in good condition and do not exceed 0.6" (1.5 cm) in length. Their form is good considering their intergrowth, with well-defined edges and heavily striated faces that are dull and waxy in luster. All have a color that ranges from a dull cream to gray, and all are translucent and cloudy. A small vein of more massive material extends into one area on the host rock, which looks like a pale brown limestone. A few tiny bits of violet and colorless fluorite rest on the crust, too.