Calcite on Fluorite with Chalcopyrite, Bethel Level, Annabel Lee Mine, Ozark-Mahoning Company, Harris Creek District, Southern Illinois, Mined c. 1986-1988, Tolonen Collection, Medium Cabinet 7.5 x 8.5 x 11.5 cm, $650. Online 1/15
Yellow fluorite surrounded with elongated prismatic calcite. Across the exposed surface of the fluorite are oxidized chalcopyrite crystals that impart a 'speckled' appearance. A rarity from the mine. In my experience I have seen perhaps 3-4 of these combinations. In excellent condition. Tolonen Collection. Entered into Ross C. Lillie database collection as RCL2558.