Fluorite, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined ca. 1960s - 1970s, Fowler Collection, Miniature 2.5 x 5.0 x 6.8 cm, $45. Online 7/19.
Plate of zoned yellow and purple fluorite. Typical crystal size 1-1.5 cm with good luster. There is a Penetration Law twin on one edge and surface modifications from tetrahexahedrons. Excellent condition with only a tiny little nick on one corner. Mined ca. 1960s-1970s. Wayne Fowler Collection.