Fluorite - Crystal Mine, Cave-In-Rock Mining Sub-Dist., Hardin Co., Illinois, USA More info: https://www.irocks.com/minerals/specimen/51660 Here is a beautifully zoned yellow and purple Fluorite from the less prolific Crystal Mine in the Illinois Fluorspar district (same deposit, and later merged into the Minerva Mine, if I recall). This absolutely lovely piece has a large, rich yellow, mostly transparent core with some slightly turbid areas at the interior, along with a sharply defined, 3 to 4

Fluorite with Chalcopyrite and Baryte inclusions - Minerva No. 1 Mine, Ozark-Mahoning group, Cave-In-Rock Mining Sub-Dist., Hardin Co., Illinois, USA More info: https://www.irocks.com/minerals/specimen/51938 One of the big surprises when we unpacked the worldwide collection of Kurt Hefendehl, who was based in Germany, was a small suite of choice, finely phantomed fluorites from Illinois that he bought in the 1980s-1990s heyday of this district, that is now closed. Here is a large, fine, complete

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