Dims: 1.30x1.18x0.71" (3.30x3.00x1.81cm)
Wt: 0.58oz (16.3g)
This is a beautiful specimen from the rich mining district of Shaba, Congo (formerly Katanga, Zaire). It displays multiple colorful copper minerals, especially deep blue cornetite crystals as a shell over the host mineral (which looks like chrysocola, but it may be another turquoise blue copper mineral) which in turn is wrapped around a core of something black and metallic looking, and on top of the cornetite are light green tufts that I believe are brochantite, plus tiny crystal clusters of light blue (or is that deep turquoise) that appear to be plancheite. This is a lovely specimen to examine with a loupe, but the only mineral classification I am certain of is the cornetite.