Dims: 2.8 x 2.5 x 1.0" (7.2 x 6.3 x 2.5 cm)
Wt: 5.2 oz. (148 g)
Casapalca Mine, Peru
Dozens of intergrown Tetrahedrite crystals are intergrown with quartz crystals on this large hand specimen. These crystals measure up to 0.4" (1.0 cm) along an edge, and only the largest and most exposed crystals show any damage. Their isometric, tetrahedral form is excellent- most have very sharp edges and lightly striated faces. They have the standard dark, silvery-gray color and metallic luster. The quartz crystals that grow among them are in excellent condition and have excellent hexagonal prismatic form. They do not tend to exceed 0.3" (8 mm) in length and are transparent and extremely clear. All rest on a base of crystalline sphalerite.