Tag along with Rockhounding Midmo as she explores a rock quarry in Southern Illinois’ Cave in Rock area. This part of the country has produced some of the world’s most beautiful fluorite specimens, and it’s easy to see how that’s possible after seeing some of these specimens.
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The Cave in Rock district in Hardin County, Illinois has produced some of the world’s most beautiful fluorite specimens. The Cave in Rock district has stratiform deposits, or bedding plane deposits, of fluorite, which also happens to be Illinois’ state mineral. The area has a very long and rich history of mining fluorite, with mines operating from the 1840s until the Annabel Lee Mine closed as recent as 1995.
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