Sphalerite on Siderite drill bit twin lustrous black Sphalerite crystals and

lustrous black Sphalerite crystals and additional Chalcopyrites which are sprinkled throughout

This is more than just a “black” rock just based upon its visceral beauty

and one of the best pieces from the find that I've handled

hence the reduced priced

Sphalerite on Siderite drill bit twin lustrous black Sphalerite crystals andFrom my own personal collection, this cabinet sized display specimen is a quintessential Gilman sulfide carbonate association piece. Several remarkably sharp AND lustrous crystals of jet black Sphalerite with notably SMOOTH faces hardly any striations at all on many faces are gently intermixed and sitting atop a crystallized plate of soft beige cream colored compressed rhombohedra or discs of Siderite. The piece was mined in 1978, and I actually