Sphalerite and Calcite on Dolomite (ex. Feist Coll.)

Item Description

From the Feist Collection, a large matrix covered with dolomite crystals, upon which sit fat crystals of sphalerite (opaque-looking, but actually a coffee color inside). Atop a mound of the sphalerite crystals, a lone scalenohedron of calcite has grown! You can see little chalcopyrites scattered around as well.