Where to Find Lake Superior Agate in Iowa
7 mapped lake superior agate rockhounding spots in Iowa, across 6 counties. Lake Superior agate is a banded chalcedony eroded out of basaltic flows around the Lake Superior basin.
Map of 7 lake superior agate rockhounding spots in Iowa
Lake Superior Agate by county in Iowa
Counties ranked by number of lake superior agate spots in our database.
Every lake superior agate spot in Iowa
Sorted by county. Coordinates open in Google Maps. Click a row for details.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| Shell RockState Highway 3 | Butler County | 42.7266, -92.5863 | Public | |
| Burlington (geodes)Starrs Cave Road | Des Moines County | 40.8521, -91.1493 | Public | |
| Burlington (Lake Superior agate)Flint River Trail | Des Moines County | 40.8320, -91.0984 | Public | |
| DubuqueRiverside Road | Dubuque County | 42.5762, -90.6824 | Public | |
| Fayette CountyEcho Valley Road | Fayette County | 42.9470, -91.7751 | Public | |
| BellevueGreat River Road | Jackson County |
| 42.2313, -90.4017 | Public |
| Muscatine (agate)County Road G44X | Louisa County | 41.3185, -91.1561 | Public |
Lake Superior Agate in Iowa FAQ
Where can I find lake superior agate in Iowa?+
RockHoundR tracks 7 lake superior agate spots in Iowa, spread across 6 counties. The strongest concentration is in Des Moines County.
Is collecting lake superior agate legal in Iowa?+
Casual hand collection of common rocks and minerals like lake superior agate is allowed on most BLM and U.S. Forest Service land in Iowa, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always confirm rules before a trip.
What is the best lake superior agate location in Iowa?+
Des Moines County has the most lake superior agate spots in our database for Iowa. The full county breakdown is below — different counties produce different qualities and varieties.
Other states for lake superior agate
Hunt lake superior agate in Iowa on the map
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