Rockhounding in Illinois

9 researched sites, each with an access tier, evidence tier and site history.

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Cave-in-Rock District, Hardin Co., IL · mineral · Gray area
Fluorite District Dumps, Rosiclare and Cave-in-Rock · mineral · Gray area
Keokuk Geodes, Hamilton and Warsaw · crystal · Permission required
Mazon Creek (Mazonia State Fish and Wildlife Area) · fossil · Open / legal
Mazon Creek (Pit 11 / Braidwood spoil piles) · fossil · Gray area
Mazon Creek / Braidwood concretions, Illinois · fossil · Permission required
Rosiclare, Hardin Co., IL · mineral · Gray area
Thornton Quarry · fossil · Permission required
Warsaw / Hamilton Geode Area, IL · geode · Permission required