“Two sharp interpenetrated cubic crystals of Galena (2 cm on edge) with mirror-like faces and truncated corners, ideally sitting on a chert matrix covered with a first generation of small octahedral and cubo-octahedral Galena crystals, associated with doubly terminated dog-tooth Calcite crystals. JFC collection and photograph. ”

“Two sharp interpenetrated cubic crystals of Galena (2 cm on edge) with mirror-like faces and truncated corners, ideally sitting on a chert matrix covered with a first generation of small octahedral and cubo-octahedral Galena crystals, associated with doubly terminated dog-tooth Calcite crystals. JFC collection and photograph. ”

“Two sharp interpenetrated cubic crystals of Galena (2 cm on edge) with mirror-like faces and truncated corners, ideally sitting on a chert matrix covered with a first generation of small octahedral and cubo-octahedral Galena crystals, associated with doubly terminated dog-tooth Calcite crystals. JFC collection and photograph. ”