Sphalerite with Chalcopyrite, Sub-Rosiclare Level Deardorff Mine, Ozark-Mahoning Company, Cave-in-Rock District Southern Illinois, Mined ca. 1950s - 1960s, Noll Collection #CN5053, Small Cabinet 3.5 x 6.0 x 10.5 cm, $350. Online 07/11 SOLD.
The Deardorff Mine produced what are likely the largest and finest sphalerite crystals from the district over a 30 plus year span. This piece is one of the largest and finest miniature examples I have seen. The main crystal is nearly 5 cm across and stands just about 4 cm high. The luster is very fine and there is a nice association with chalcopyrite. Typical of the deposit, there is no point of attachment. A top quality specimen from mining ca. 1950s-1960s. Charles Noll collection #CN5053. Entered into Ross C. Lillie database as RCL2596.