Fluorite with Calcite, Rosiclare Level Main Ore Body, Denton Mine, Ozark-Mahoning Company, Harris Creek District, Southern Illinois, Mined ca. 1981-1983, Koster Collection #00220, Medium Cabinet 4.5 x 12.0 x 15.0 cm, $250. Online 3/18. SOLD.
Plate of very richly zoned purple over yellow fluorite with localized light druse of calcite. Minor edge chip on one crystal.
Provenance: Sam & Ann Koster Collection #00220; sold to Ross Lillie at their home in Houston in 2016. Database notes: Main ore body characteristics: deep purple zone with yellow internal 'windows'; good medium luster; 'modified' edges on cubes from incomplete growth; associated, modified rhombic calcite druse on matrix. No point of attachment with recrystallized matrix and edges.