Fluorite, Rosiclare Level, Cross-Cut Orebody, Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Roy Smith Collection, Mined c. 1991-1992, Miniature 3.0 x 3.5 x 6.0 cm, $125. Online 3/4/15. SOLD.
Glass luster, transparent light yellow fluorite with no point of attachment. There is a curved line of included hydrocarbon that runs across the surface indicating fluid level in pocket when oil was present. Very sharp miniature from mining c. 1991-1992. One small edge chip on back side of larger crystal. Roy Smith Collection.