Fluorite - Penetration Law Twin, Rosiclare Level, Lillie Pod North End, Denton Mine, Ozark-Mahoning Company, Harris Creek District, Southern Illinois, Mined c. 1984, Tolonen Collection, Small Cabinet 5.5 x 6.0 x 7.0 cm $4500. Online 1/15. SOLD.
Exceptionally sharp and perfect Penetration Law twin from advance mining in the North-End of the Denton Mine, aka, 'Lillie Pod: coined for the exploration geologist who targeted and drilled the ore body. The color and luster is very fine and the twin is unusually large for the ore body. Advance mining ca. 1984-1985. Tolonen Collection. Entered into Ross C. Lillie Collection database as RCL2545.