Dims: 4.3 x 3.6 x 2.4 " (10.9 x 9.1 x 6.1 cm)
Wt: 14.1 oz. (401.0 g)
Cave Mine, Beaver County, Utah, U.S.A.
Several flat clusters of radiating Aurichalcite needles rest on the limonite host rock of this large hand specimen. These crystals do not appear to exceed 0.4" (1.0 cm) in length or 2 mm in diameter and are generally in good condition, as they are not highly exposed. There is a small amount of visible damage, but it is minor. They are rather warped due to intergrowth, and their size makes studying them difficult, but they appear to have a good orthorhombic form. All have a pale aqua-blue coloration and a pearly luster, and though it is difficult to determine, I would think that they would be dimly transparent or at least translucent. Accompanying the Aurichalcite clusters is a thin, colorless and transparent calcite crust.