Chalcopyrite on Fluorite, Sub-Rosiclare Level, Lillie Pod, North-End, Denton Mine, Ozark-Mahoning Company, Harris Creek District, Southern Illinois, Mined c. 1983 - 1985, Tolonen Collection, Miniature 4.0 x 5.0 x 5.5 cm, $65. Online 3/18. SOLD.
Group of very deep purple fluorite with associated surface chalcopyrite and light brown sphalerite in matrix. Note main crystal twinned on Penetration Law. Complete to all sides and displays well from several angles. Condition: trivial edge chips towards top of main crystal and a small chip on lower edge. Mined ca. 1983-1985. Tolonen Collection.