Calcite, Denton Mine, Ozark-Mahoning Company, Harris Creek District Southern Illinois, Mined ca. 1982, Kalaskie Collection #328, Small Cabinet 5.0 x 6.5 x 12.0 cm, $45. Online 4/4
Lustrous group of 'dogtooth' calcite showing internal phantoms. Bottom view shows multiple stages of growth analogous to tree rings in cross-section. Extremely tiny little nick on termination. Mined ca. 1982. Betty Kalaskie Collection #328.