Calcite

From a relatively new find, this large piece features a 7cm crystal on one side settled amongst dozens of less prominant ones. All crystals are terminated with a curious “capping” of opaque cystals. The body of the specimen has snaking lines throughout which I believe are the exposed terminal edges that developed that same opaqueness. A stunning piece.

Locality: Santa Barbara Mine, Santa Barbara Municipality, Chihuahua, Mexico

Composition: calcium carbonate