The matrix of this specimen is a banded green malachite which is covered by a later generation of pale green chrysocolla. Lustrous dark green malachite crystals in turn spread across the contrasting chrysocolla. This specimen is from the Mashaba West Mine, Katanga (Shaba), Congo. I purchased it out of a private Canadain collection.
This specimen is from Denton Mine, Harris Creek District, Hardin Co., Illinois. Good specimens from this area have become hard to find. The main barite grouping is approximately 4.7 cm long and contrasts nicely with the faces of the purple fluorite cube they rest on.