Fluorite and Sphalerite, Bethel Level Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined ca. 1994-1995, Koster Collection #00190, Miniature 3.0 x 3.3 x 3.5 cm, $125. Online 03/04. SOLD.
Towards the end of mining in the Minerva #1, there were a number of pockets found that produced fluorite crystals like this specimen. Note the rich yellow color with a thin but intense purple rim, high luster and pronounced tetra hexahedron modifications on surface as characteristic of this mining horizon and occurrence. Excellent condition. Sam & Ann Koster Collection #00190.