Where to Find Illite in the United States
1 mapped illite spots across 1 U.S. states. Illite is reported at multiple rockhounding spots across the United States. The map below shows where collectors most often find it on legal public ground.
Map showing where to find illite across the United States, with 1 mapped spots
Top states for illite
States ranked by number of illite spots in our database. States in bold link to a focused illite-in-state list.
Every illite spot we track
Sorted by state and county. Coordinates open in Google Maps.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| Duchesne CountyWest Main Street | Duchesne County | 40.1634, -110.4014 | Public |
Illite rockhounding FAQ
Where is the best place to find illite in the U.S.?+
Utah have the highest concentrations of illite in this list. Each state's quality and access varies — open the linked state pages for a detailed view.
How many illite rockhounding spots does RockHoundR track?+
1 mapped spots across 1 states. The app keeps these on a map alongside your private finds.
Can I legally collect illite on public land?+
Casual hand collecting of common rocks and minerals like illite is allowed on most BLM and U.S. Forest Service land, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always check with the managing agency before a trip.
How do I identify illite in the field?+
Field identification of illite comes down to color, hardness, fracture, and luster. The RockHoundR app links to geology details for each spot to help narrow down what you might be picking up.
Hunt illite on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
