Sphalerite on Quartz, Sub-Rosiclare Level, W. L. Davis/Deardorff Mine, Mahoning Mining Company attr., Cave-in-Rock District, Southern Illinois, Mined c. 1940's, Ron Roberts Collection BPQ-8, Large Cabinet 7 x 13 x 17 cm, $300. Online September 14.
Rich combination of black-jack sphalerite and quartz. Nice three dimensional sculptural form. Acquired from a local pastor in Hardin County by Ron Roberts. A very early specimen from this famous mine. Specimen shows some aspects of wear but is in excellent condition considering the age and era.