Dims: 2.0 x 1.2 x 0.8" (5.1 x 3.0 x 2.0 cm)
Wt: 1.60 oz. (44.8 g)
San Jose Mine, Oruro, Bolivia
Intergrown clusters of heavily intergrown Franckeite blades make up most of the mass of this thumbnail specimen. Though most of the crystals are exposed and damaged or broken, there are a few in hollows and sheltered areas that appear to be intact. They do not exceed 0.3" (8 mm) in length and have a rather interesting triclinic form- some blades have a sawtooth-edged shape that resembles the outline of a pine tree. All have the standard dark gray coloration and dull metallic luster of the species. A portion of the specimen consists of heavily matted berthierite crystals that partly coat a massive berthierite base that is attached to the Franckeite. There is no host rock present, however.