Fluorite, Rosiclare Level, Northwest Cross-Cut Orebody, Minerva No. 1 Mine, Ozark-Mahoning Co., Cave-in-Rock District, Southern Illinois, Mined c. 1990-1991, ex. Sam and Ann Koster Collection, Medium Cabinet 6.0 x 6.5 x 7.0 cm, $60. Online Dec. 19
NSMW13537
Cluster of purply-brown fluorite crystals showing localized inclusions preferentially oriented across select faces. Nice color variation from the mine. In excellent condition.