Dims: 1.2" x 0.8" x 0.7" (3.0 x 2.0 x 1.8 cm)
Wt: 10.1 g
level 530, Santo Nino vein, Fresnillo, Zacatecas, Mexico
One of the most impressive examples of Stephanite that I have seen, this piece is made up of several thin orthorombic prismatic crystals that are clustered against a flat section of what appears to be a crust of polybasite that is coated with a very thin layer of pyrite or chalcopyrite. They all have excellent form with well-defined edges and clean faces. The entire specimen is in very good condition, showing only little damage. The largest of these Stephanite crystals measures about 0.6 x 0.2 x 0.1" (1.5 x 0.5 x 0.3 cm). All of them have a dark gray color and a metallic luster. Accompanying the Stephanites are at least 4 pyrargyrite crystals that have excellent trigonal prismatic form and a bright subadamantine luster, and show a dull red glow in bright light. The largest measures about 0.3 x 0.2 x 0.2" (0.8 x 0.2 x 0.5 cm). It barely fits inside a domed thimble display box.