Where to Find Millerite in the United States
7 mapped millerite spots across 2 U.S. states. Millerite 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 millerite across the United States, with 7 mapped spots
Top states for millerite
States ranked by number of millerite spots in our database. States in bold link to a focused millerite-in-state list.
Every millerite spot we track
Sorted by state and county. Coordinates open in Google Maps.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| Adrian’s QuarryUS 63 | Boone County |
| 38.6723, -92.2290 | Public |
| Bixby | Iron County |
| 37.6029, -91.1169 | Public |
| TroyHampel Road | Lincoln County | 38.9185, -90.9386 | Public | |
| Danville QuarryMO J | Montgomery County | 38.9006, -91.5417 | Public | |
| Weber QuarryI 70 | Saint Charles County | 38.8043, -90.7429 | Public | |
| St. Louis (calcite area)Eagle Rock Cove | Saint Louis County | 38.5378, -90.4931 | Public | |
| Estabrook ParkMilwaukee River Greenway Westside | Milwaukee County |
| 43.1013, -87.9140 | Public |
Millerite rockhounding FAQ
Where is the best place to find millerite in the U.S.?+
Missouri, Wisconsin have the highest concentrations of millerite in this list. Each state's quality and access varies — open the linked state pages for a detailed view.
How many millerite rockhounding spots does RockHoundR track?+
7 mapped spots across 2 states. The app keeps these on a map alongside your private finds.
Can I legally collect millerite on public land?+
Casual hand collecting of common rocks and minerals like millerite 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 millerite in the field?+
Field identification of millerite 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 millerite on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
