Dims: 2.4" x 2.4" x 1.4" (6.1 x 6.1 x 3.6 cm)
Wt: 3.27 oz. (92.8 g)
Huaron Mine, Ancash, Peru
Another lovely little Peruvian specimen, this piece exhibits dozens of long, thin hexagonal prismatic Quartz crystals that jut out of a base made up of more Quartz that is intergrown with chalcopyrite and sphalerite. The Quartz crystals do not exceed 1" (2.5 cm) in length or 0.1" (3 mm) in diameter, and have excellent form and very little damage. They have a rather dull pearly luster, but are colorless, transparent, and quite clear. The sphalerite in the base occurs as very small crystals that are difficult to see among the Quartzes, but the chalcopyrite forms large crystals, one of which exceeds 0.5" in all dimensions; I have a feeling that it is twinned or consists of two crystals that are intergrown. Like much of the chalcopyrite that I have seen from this locality, the crystals have a dull gold-brown color and a very dull luster. Only in a few small damage areas can the deep gold coloration and metallic luster that one expects of this mineral be seen. It is an excellent specimen for a young collector or one who has little room to devote to specimens.