Fluorite Octahedron with Chalcopyrite, Denton Mine, Ozark-Mahoning Company, Harris Creek District, Southern Illinois, Ron Roberts Collection, Miniature approx. 3+ cm on edge, 4+ cm point to point, $125. Online September 15.
NSMW13226
Locally transparent purple and yellow octahedron chock full of multiple generations of chalcopyrite. Polishing grade. Weight 52g.