A well formed, lustrous, golden-brown crystal of sphalerite, 3.5 cm across, on white quartz and sharply crystallized, brassy, chalcopyrite crystals, to 2 cm across. I am told these are generally pre-1950 and certainly I do not see pieces of this magnitude pop up often. It was long in Gene Meieran's sulphide collection before I traded it out of him. 5.5 x 5.4 x 4 cm