Species: Quartz

Ex. Jay M. Reese Collection

Locality: W.L. Davis-Deardorff Mine, Ozark-Mahoning group, Cave-In-Rock Mining Sub-District, Hardin County, Illinois, USA

Dimension: 11.2 x 9.0 x 7.2 cm  Weight: 692 grams

Phenomenal Illinois quartz specimen! The lustrous quartz is spotted with small sulfide crystals.