Alstonite and Barite on Fluorite and Sphalerite, Minerva #1 Mine, attr. Bethel Level, Minerva Oil Company, Cave-in-Rock District, Southern Illinois miniature 3 x 5.5 x 6.5 cm $75. Online 3/18. SOLD.
Combination of resinous brown sphalerite and yellow fluorite with localized druse of barite on one side and rich druse of alstonite and barite on the other. Note- upon close examination alstonite is sharply di-pyramidal while barite is bladed into wheat sheaf groups. Classic upper level specimen from mining ca. 1960s. Condition: fluorite on one edge shows contact. Dr. Perry and & Anne Bynum Collection.