Barite, Rosiclare Level, Minerva #1 Mine, Inverness Mining Company, Cave-in-Rock District, Southern Illinois, Mined ca. 1979, Kalaskie Collection #42-182, Miniature 4.0 x 4.5 x 7.5 cm, $75. Online 12/15.
Cluster of 'cockscomb' barite crystals showing typical bladed terminations and pearly luster. Classic Rosiclare Level specimen from mining ca. 1979. Note: Inverness Mining company (Division of Seaforth Minerals) briefly operated the #1 after Allied Chemical (late 1970s) and sold to Ozark-Mahoning in 1980. In excellent condition. Betty Kalaskie Collection #42-182.