Locality: Uchucchacua Mine, Oyon Province, Lima Department, Peru
Size: 48 mm x 30 mm x 41 mm (1.9 in. x 1.2 in. x 1.6 in.)
Weight: 77 g (2.7 oz.)
Black tabular pearceite crystals to 3 mm with pale pink calcite and minor pyrite from Uchucchacua Mine in Peru. Pearceite is a rare sulfide containing silver, copper and arsenic.