Barite and Calcite on Fluorite, Knight Mine, Ozark-Mahoning Company, Rosiclare District, Southern Illinois, Mined c. early 1970's, ex. Roy Smith Collection, Large Cabinet, 8.5 x 10.0 x 10..5 cm, $450. Online Dec. 14
Group of lustrous lilac zoned fluorite with crystals to 3.5+ cm and associated pale blue barite and creamy calcite. Note: The association with blue barite is definitive for the Knight Mine. Classic Rosiclare fluorite from the 1970's.