Calcite on Fluorite, Bethel Level attr., Ozark-Mahoning Company attr., Cave-in-Rock District, Southern Illinois, Mined c. 1970's, Ron Roberts Collection C-16, Miniature 2.0 x 3.5 x 6.5 cm, $20. Online September 14.
Attractive, sparkly calcite crystals showing two generations of deposition. Primary stage are tiny drusy crystals with localized secondary crystals of light lustrous brown scalenohedrons. In excellent condition. Nice little miniature.