Sphalerite and Chalcopyrite with Quartz, Kruchev dol Mine, Madan District, Smolyan Oblast, Bulgaria Miniature 4.5 x 6 x 7.5 cm $125. Online 7/7
Mound of black sphalerite with numerous spire-like quartz crystals protruding off the top. On one side is a very sharp, perfect brassy chalcopyrite crystal. Nice combination of three major species from advance mining in 2007. In great condition.