Dims: 3.0 x 1.7 x 1.1" (7.6 x 4.4 x 2.7 cm)
Wt: 6.6 oz. (186 g)
Mina Noche Buena, Zacatecas, Mexico
This large hand specimen consists of a crystalline Arsenopyrite crust. The crystals that extend from the crust do not exceed 0.3" (8 mm) in length or 0.2" (5 mm) in diameter, but are generally in very good condition, showing little damage. Their orthorhombic prismatic form is excellent, showing sharp edges and clean faces. All have the classic pale silvery-gray color and metallic luster. A small amount of sphalerite is embedded in the crust, and there is no other base or host material present.