Fluorite with Sphalerite, Rosiclare Level Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined c. 1992-1994, Tolonen Collection, Small Cabinet 4.0 x 5.5 x 8.0 cm, $350. SOLD
Lustrous, deep brown sphalerite matrix with a zoned light yellow and purple fluorite, 2.0 x 2.3 cm, perched on top. Chalcopyrite inclusions in fluorite and there is associated acicular calcite. In excellent condition. Advance mining ca. 1992-1994. Tolonen Collection.