Calcite on Fluorite and Sphalerite with Galena, Hill Ledford Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined c. 1960’s, Ron Roberts Collection BPG-32, Large Cabinet 11.0 x 12.0 x 20.0 cm, $200. Online 5/11.
Classic combination of sphalerite and fluorite from the Hill Ledford Mine. Intersecting joint planes for a highly sculptural specimen. Displays from multiple angles. In very fine condition.