Fluorite with Sphalerite
specimen number:
2312245
location:
Annabel Lee Mine, Hardin Co., Illinois, USA
description: The Annabel Lee Mine, located in Hardin County, Illinois, was operated by the Ozark-Mahoning Company and stood as the final active underground fluorspar mine in the historic Illinois-Kentucky mining district before closing in 1995 due to foreign market competition. Geologically, the mine was situated within the Cave-in-Rock subdistrict and targeted bedded replacement deposits of fluorite, sphalerite, and galena. These economic mineral deposits formed via hydrothermal solutions moving along major fault trends and replacing specific, chemically favorable Mississippian limestone strata.
A thin breccia matrix is coated with crystallized sphalerite. On each side of this matrix are attractive purple gemmy crystals of cubic fluorite. Neat specimen in very good condition.
Size: 11.0 x 6.0 x 5.0 cm (cabinet)
Collection: Paul Siegel
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