Where to Find Calomel in the United States
1 mapped calomel spots across 1 U.S. states. Calomel 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 calomel across the United States, with 1 mapped spots
Top states for calomel
States ranked by number of calomel spots in our database. States in bold link to a focused calomel-in-state list.
Every calomel spot we track
Sorted by state and county. Coordinates open in Google Maps.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| TerlinguaFM 170 | Brewster County | 29.3089, -103.6275 | Public |
Calomel rockhounding FAQ
Where is the best place to find calomel in the U.S.?+
Texas have the highest concentrations of calomel in this list. Each state's quality and access varies — open the linked state pages for a detailed view.
How many calomel 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 calomel on public land?+
Casual hand collecting of common rocks and minerals like calomel 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 calomel in the field?+
Field identification of calomel 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 calomel on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
