Where to Find Lake Superior Agate in Iowa
Iowa has 7 mapped collecting spots that report lake superior agate, spread across 6 counties. The largest share sits in Des Moines County County with 2 spots. 7 of the spots are on land mapped as publicly accessible.
Map of 7 lake superior agate collecting spots in Iowa
Best counties for lake superior agate in Iowa
Ranked by the number of mapped lake superior agate spots. County links open the full rockhounding page for that county.
- Des Moines County2 spots
- Butler County1 spot
- Dubuque County1 spot
- Fayette County1 spot
- Jackson County1 spot
- Louisa County1 spot
Every lake superior agate spot we track in Iowa
Sorted by county. Coordinates open in Google Maps.
| 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 |
Before you go
Read the lake superior agate identification guide so you know what a keeper looks like in the field: Lake Superior Agate in the encyclopedia.
Lake Superior Agate in Iowa FAQ
Where can you find lake superior agate in Iowa?+
The mapped spots concentrate in Des Moines County County, Butler County County, and Dubuque County County. Every spot on this page appears on the map above with coordinates and access notes.
How many lake superior agate spots are mapped in Iowa?+
7 spots across 6 counties. The RockHoundR app keeps the same spots on an offline map with public land overlays, geology layers, and your saved finds.
Is it legal to collect lake superior agate in Iowa?+
Hand collecting of common rocks and minerals in small amounts for personal use is generally allowed on BLM and U.S. Forest Service land, with limits set by the local field office. National parks, most state parks, and tribal land are closed to collecting. 7 of the 7 mapped spots here sit on land marked public. Always confirm current rules with the managing agency before you dig.
Where else to find lake superior agate
More minerals to hunt in Iowa
Hunt lake superior agate in Iowa with the map in your pocket
RockHoundR puts these spots on an offline map with BLM and Forest Service overlays, geology layers, and a log for your finds.
