GeodeIL
Bensenville Dolomite Geodes
Chicago area dolomite quarries historically produced small quartz geodes; remaining access is limited to creek exposures west of the city.
View detailsGeodes rockhounding sites in Illinois
Where to find geodes near you — Keokuk / Warsaw Formation crystals, Utah Dugway BLM beds, Indiana limestone, Tennessee plateau nodules, and more hollow quartz-lined collecting sites.
10 geodes destinations in Illinois.
Western Illinois shares the Keokuk geode belt with Iowa and Missouri. Browse Illinois geode listings here, then use geodes near me for live distance sorting. Sort live from your phone with Geodes near me (GPS), or browse all U.S. geodes rockhounding sites and the Illinois state page.
Guides & hubs: Geode hunting guide · Geodes in Iowa
Geodes collecting in Illinois
Where to find geodes near you — Keokuk / Warsaw Formation crystals, Utah Dugway BLM beds, Indiana limestone, Tennessee plateau nodules, and more hollow quartz-lined collecting sites.
We currently document 10 geodes collecting sites in Illinois. Each listing includes original descriptions, visitor notes, and last-updated dates when available.
What to know before you collect
Geodes destinations in Illinois vary widely in access, season, and legality. Some are official recreation areas; others are informal gravel bars. Read the access and safety sections on each listing — never assume collecting is allowed without checking current signage.
For trip planning beyond this filter, browse the full Illinois state page, our guides, or use near me to sort by distance from your location.
What to pack for geode collecting
Breaking nodules and hauling finds — gear we compare for geode-hunting trips.
All gear categories →
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GeodeIL
Crystal Glen Creek
Crystal Glen Creek is a documented mineral occurrence near IL. Reported specimens include Geodes, Barite, Calcite, Dolomite, Goethite, Pyrite, Quartz, Selenite. Verify land access and collecting rules before visiting.
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Dallas City
Dallas City is a documented mineral occurrence near IL. Reported specimens include Geodes, Calcite, Malachite. Verify land access and collecting rules before visiting.
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Hamilton (west)
Hamilton (west) is a documented mineral occurrence near IL. Reported specimens include Geodes. Verify land access and collecting rules before visiting.
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Hamilton Quarry
Hamilton Quarry is a documented mineral occurrence near IL. Reported specimens include Geodes, Pyrite, Calcite, Sphalerite. Verify land access and collecting rules before visiting.
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Mckee Creek
McKee Creek is a documented mineral occurrence near IL. Reported specimens include Geodes, Sphalerite. Verify land access and collecting rules before visiting.
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Mississippi River (near Hamilton)
Mississippi River (near Hamilton) is a documented mineral occurrence near IL. Reported specimens include Geodes, Amethyst, Quartz. Verify land access and collecting rules before visiting.
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Nauvoo
Nauvoo is a documented mineral occurrence near IL. Reported specimens include Geodes. Verify land access and collecting rules before visiting.
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Spillman Creek
Spillman Creek is a documented mineral occurrence near IL. Reported specimens include Geodes, Pyrite, Chalcedony, Sphalerite, Quartz. Verify land access and collecting rules before visiting.
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Tyson Creek
Tyson Creek is a documented mineral occurrence near IL. Reported specimens include Geodes. Verify land access and collecting rules before visiting.
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