CHALCOPYRITE epitactic on SPHALERITE
SIZE: 4 3/8" x 3 1/2"
Description: A large (2+ lb) cabinet specimen of crystallized sphalerite (red when backlit) that hosts 100's of mirror bright chalcopyrite crystals that are epitactically overgrown on the sphalerite. A few cleavage areas on the sphalerite and some remnant styrofoam still on the bottom from a previous mount. I believe this is a beautiful and remarkable old classic that offers much to study, mineralogically.