Composed of unusually thickly-interwoven, lustrous, brassy yellow crystals of pyrrhotite to 6.5 cm on edge, this specimen also is decorated by a few lustrous black sphalerite crystals to 1 cm across. In addition, the whole specimen is studded with rounded aggregates of rhombohedral, tan siderite, to 5 mm across. Nice color contrast, and a sharp metallic, carved look to it, make this piece stand out. As well, it is HUGE for this old classic locale! This monster classic weighs 7.5 pounds!