Dims: 4.3 x 2.7 x 2.0" (10.9 x 6.9 x 5.1 cm)
Wt: 12.8 oz. (365.0 g)
Inca de Oro, Chile
This hand specimen consists of a rather odd formation of drusy Chrysocolla that rests on a dull, dark brown host rock. There is a considerable amount of damage to the formation, in that many breakage surfaces are visible. The material is generally massive and has only a mild reniform form, with a dull waxy luster. It has the deep aqua-blue coloration that one expects from this mineral, but there are a few noticeable green patches where the Chrysocolla enveloped smaller formations of massive malachite. Those surfaces that are not damaged are covered by a druse of tiny, heavily intergrown quartz crystals that are generally colorless and have a vitreous luster. There are several hollow depressions that extend into the Chrysocolla, giving it a rather odd shape, and a few veins of the mineral extend down into the brown host rock, which I think contains a considerable concentration of iron.