Calcite on Fluorite, Rosiclare Level Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined ca. 1992-1993, Koster Collection #00164, Miniature 3.0 x 4.0 x 4.0 cm, $125. Online 03/04. SOLD.
Group of zoned yellow, purple and blue fluorite in combination with calcite and sphalerite. Mined ca. 1992-1993. Tiny cleave off main center crystal. Sam & Ann Koster Collection #00164.