Dims: 2.2" x 1.6" x 0.6" (5.6 x 4.1 x 1.5 cm)
Wt: 1.41 oz. (40.1 g)
near Kolwezi, Zaire
The Sphaerocobaltite makes up a thin crust coating a layer of calcite on this specimen. It occurs as thin, round bladed crystals that show moderately good form and little damage. They do not exceed 0.3" (0.8 cm) in length. They have a bright pink color and a vitreous luster and are transparent and surprisingly clear, though the thinness of the crust prevents one from seeing much inside of or through it. Nestled in a depression in this crust is a small patch of dull black material that has a definitely botryoidal form. I am not exactly sure what kind of mineral it is, but there is a slim chance that it is a variety of pyrolusite, which looks similar and is found in localities around Kolwezi. This material makes the specimen a bit mysterious.