Dims: 3.2 x 2.5 x 1.1" (8.1 x 6.4 x 2.8 cm)
Wt: 6.51 oz. (184.7 g)
The black-and-white host rock of this hand specimen is partly coated with a thin crust of Sphaerocobaltite. The crust is made up of hundreds of intergrown crystals that are generally in good condition (there are a few small spots of damage) but do not exceed 0.1" (3 mm) along any axis. They are so heavily intergrown that their trigonal form cannot be clearly defined, but most appear to have a tabular habit. All have the classic bright pink coloration and a pearly luster, and are likely translucent. A small portion of the crust appears to have undergone some pseudomorphing, having turned into malachite. There are a few visible crystals, however, that seem to have the monoclinic form of malachite, so they may have grown after the Sphaerocobaltite and covered it over. The host rock appears to be very carbonate-rich, and contains a few visible veins of malachite.