Fluorite and Sphalerite with Chalcopyrite, Rosiclare Level, North-End, Denton Mine, Ozark-Mahoning Company, Harris Creek District, Southern Illinois, Mined c. 1984-1985, Tolonen Collection, Medium Cab. 6.5 x 9.5 x 10.0 cmTy $2500. Online 1/18 SOLD
Combination of zoned yellow and purple, lustrous fluorite, brassy iridescent chalcoppyrite and resinous deep brown sphalerite. A sharp Penetration Law twin, 1.8 x 2.2 x 2.7 cm, is perched on high point on matrix and displays with transparent yellow center with well developed purple rim. Twins from this section of mine are unique to the North-End, aka., Lillie Pod. The chalcopyrite crystals are unusually large, 2 mm, and richly scattered over sphalerite. Very attractive and fine specimen from advance mining ca. 1984-1985. Tiny chip on one fluorite. Tolonen Collection. Entered into Ross C. Lillie Collection database as RCL2524.