Dims: 3.2 x 2.2 x 1.7" (8.1 x 5.6 x 4.3 cm)
Wt: 4.13 oz. (117.3 g)
Mandata, Northumberland County, Pennsylvania, U.S.A.
At least 15 orthorhombic prismatic Celestite crystals rest in the hollows of the shale host rock of this specimen. Though many of these crystals are damaged or broken, most of them are in excellent condition. They achieve lengths of up to 0.7" (1.8 cm) and have excellent form, with truncated basal terminations. Their edges are very well-defined and their faces are clean, possessing a pearly-to-vitreous luster. All have the standard pale gray-blue coloration of Celestite and are transprent and moderately to dimly clear due to cloudy inclusions. The many hollows in which they rest are lined with hundreds of tiny calcites that have a good trigonal tabular or prismatic form and are basically colorless, transparent, and clear.