Dims: 3.24x1.96x1.14" (8.23x4.99x2.90cm)
Wt: 3.53oz (100.0g)
79 Mine, Gila County, Arizona, USA
While this specimen is mostly hemimorphite, there are many other minerals present. The hemimorphite crystals are colorless and transparent, organized in radial clusters of tabular crystals. Most of the clusters have white tops, which looks to me like more hemimorphite that is white and translucent organized in books of thin curved crystals (although I have seen gypsum crystals look like these, too). The color of this specimen comes from two copper minerals that I have not identified, a deep green mineral that forms tiny balls, generally clustered together into a micro-botryoidal crust (possibly brochantite), and a light blue mineral the color of chrysocola but forming tiny fuzzy clumps.