Sphalerite and Quartz, Sub-Rosiclare Level, Deardorff Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois Medium cabinet 6.5 x 10.5 x 14 cm $2800. Online 9/2. SOLD.
Elongated mound of sphalerite and quartz on limestone matrix. Crystallized to all sides and in great condition. Sphalerite crystals up to 3.5 cm across. Fine combination specimen from the richest bedded deposit in the district. Mined c. 1950s-early 1960s. Roy Smith Collection M1810.