Fluorite with Chalcopyrite, Rosiclare Level Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined ca. 1990-1992, Koster Collection #00046, Miniature 2.2 x 6.0 x 8.0 cm, $250. Online 03/07. SOLD.
Transparent, light yellow and purple, glassy fluorite plate with multiple inclusions of chalcopyrite. Trivial edge chips on two crystals. Very fine quality fluorite from mining ca. 1990-1992. Sam & Ann Koster Collection #00046.