Fluorite, Rosiclare Level Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined ca. 1990-1992, Koster Collection #00189, Miniature 3.3 x 4.5 x 7.0 cm, $20. Online 03/04. SOLD.
Zoned light blue and yellow fluorite with localized purple zones. Found loose in pocket with recrystallized matrix and naturally etched surfaces. Mined ca. 1990-1992. Excellent condition. Sam & Ann Koster Collection #00189.