Witherite, Bethel Level, Minerva #1 Mine, Minerva Oil Company, Cave-in-Rock District, Southern Illinois, Mined c. early 1960's, Ron Roberts Collection W-1, Miniature 2.5 x 4.0 x 5.0 cm, $100. Online September 14.
Pseudohexagonal witherite crystals with associated white barite. One of the more uncommon forms of barite from the district resembling "biscuits". In excellent condition.