Fluorite, Rosiclare Level Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined c. 1992-1993, Tolonen Collection, Small Cabinet 5.0 x 8.5 x 8.5 cm, $450. Online 1/16 SOLD
Multi-zoned fluorite crystals, typically 1.5-2.5 cm on edge, with associated chalcopyrite and sphalerite. Zoning sequence with light yellow center, followed by dark purple and in turn by light pale blue. A couple of minor cleaves. Advance mining ca. 1992-1993. Tolonen Collection.