Dims: 4.0" x 2.7" x 1.6"(10.2 x 6.9 x 4.1 cm)
Wt: 15.6 oz.(441 g)
Summitville Mine, Summitville, Colorado, U.S.A.
This specimen is the first one that I have seen of crystalline Covellite. Though the crystals are grown so that only one or two complete edges of each are visible and all are heavily intergrown, their edges and platy, micaceous form are obvious. The intergrowth makes it nearly impossible to define individual crystals, so measurement of their maximum dimensions cannot be done. However, there are some smaller crystals (0.2 - 0.5" or 0.5 - 1.3 cm) whose hexagonal form can be seen, though they are not complete. The crystals have a mostly dark gold color, though a violet color is present along many of the edges, a dull metallic luster, and are definitely opaque. A thin crust on the specimen's underside is a white-to-pale-green color and makes me think of malachite, but contains other material. Other than that, the specimen has no host rock and is attached to a rectangular, flat acrylic base with removable putty. It is a rather large specimen of an unusual material.