Barite, North Bishop Tract Minerva #1 Mine, Ozark-Mahoning Company, Cave-in-Rock District, Southern Illinois, Mined 1981, Kalaskie Collection #392, Miniature 1.5 x 2.0 x 6.0 cm, $125. Online 10/6.
Exceedingly rare stalactitic barite from mining in 1981. These were coming out when I worked at Ozark-Mahoning and I bought it from Wink Oxford a local mineral dealer in Elizabethtown. Terminated and in great condition. Note helical twist as specimen formed. Choice. Betty Kalaskie Collection #392.