Fluorite and Sphalerite, Rosiclare Level Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined c. 1991-1992, Tolonen Collection, Miniature 4.5 x 4.8 x 5.0 cm, $450. Online 1/13. SOLD.
Zoned light blue and yellow fluorite with a thin but intense purple zone separating the two colors. There are localized bright white barite inclusions and association with brown sphalerite. Displays well from several angles and in excellent condition. Tolonen Collection. Advance mining ca. 1991-1992.