Calcite with Hydrocarbons, Denton Mine attr. Sub-Rosiclare Level, Ozark-Mahoning Company, Harris Creek District, Southern Illinois, Mined ca. 1983-1985, Noll Collection #CN732, Small Cabinet 5.5 x 5.5 x 7.0 cm, $125. Online 7/19 SOLD.
Single, transparent, honey yellow calcite perched on limestone matrix. Associated blebs of hydrocarbon both on matrix and calcite and some micro pyrite on matrix. Very tiny little nick on termination. Provenance: Charles Noll: to Marquette University-Milwaukee; brokered by Seaman Museum; sold to North Star Minerals. Charles M. Noll collection #CN732.