Where: Illinois · North America · approx. 40.35, -91.43 (vicinity only)
Why this spot: Rockhounding locality: Keokuk-district geodes, western IL
What turns up: quartz geodes, calcite, dolomite, pyrite
Access: Permission required.
In the Warsaw/Hamilton part of the Keokuk geode district, geodes weather from private-land creek banks; get landowner permission (or use a nearby fee mine) before collecting.
Open in Mudlark Map →
Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.
Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.