Chalcopyrite Calcite Dolomite on Rhyolite "Onion Peel" from the famous Homestake Gold Mine in Lead, South Dakota.
Weighs___________Measures______________As shown in the photos and/or video
Extremely rare to get a fine crystallized mineral specimen from the Homestake mine, only certain geologists were allowed to take samples out, and they are hard to find to say the least.  Comes with the labels shown as provenance.