Witherite and Fluorite with Calcite, Bethel Level Minerva #1 Mine, Minerva Oil Company, Cave-in-Rock District, Southern Illinois, Mined c. early 1960s, Miniature 2.0 x 3.5 x 5.0 cm, $450. Online 10/2.
Rare combination of a doubly terminated 2.7 cm witherite 'football' in combination with steep calcite scalenohedra and light blue fluorite. Note witherite is 'bisected' by the shell of fluorite: a common occurrence with these late-stage carbonates. In excellent condition. Mined circa early 1960s.