Dims: 1.34x0.98x0.84" (3.40x2.48x2.13cm)
Wt: 0.61oz (17.2g)
Kolwezi, Katanga, Congo
This specimen has a crust of deep maroon sphaerocobaltite crystals on one surface. Under a loupe, the individual crystals appear deeply colored and translucent (bordering on transparent), and they have a variety of forms, much like calcite crystals. Speaking of calcite, I suspect that the lighter colored crystals are, indeed, calcite, or more properly cobalto-calcite as they have enough cobalt in the structure to color them pink. In addition to the exposed crust, there are several other areas where veins of sphaerocobaltite are exposed.