Strontianite and Calcite on Fluorite, attr. Rosiclare Level Minerva #1 Mine, Cave-in-Rock District, Minerva Oil Company, Southern Illinois, Mined ca. early 1960s, Dr. Perry & Anne Bynum Collection, Small Cabinet, 5.5 x 7.0 x 9.2 cm, $380. Online 6/6.
Combination of light brown, lustrous calcite and sprays and acicular aggregates of strontianite on purple and yellow fluorite matrix. Note curved terminations and 'bow-tie' forms as indicative of strontianite. In very fine condition although strontianite shows typical abrasion here and there. From the great mining days of Cave-in-Rock. Dr. Perry & Anne Bynum Collection. Note: Minerva #1 is attributed locality, may also be from Ozark-Mahoning property adjacent to Minerva.