Sierra Madre: Copper & Cobalt Rockhounding in Carbon County, Wyoming

Updated June 2026

Sierra Madre is a mapped rockhounding spot in Carbon County, Wyoming. Reported finds include copper, cobalt. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Carbon County
State: Wyoming
Nearest road: Divide Spur 1A Road
Coordinates: 41.18358, -107.03180

Geology at Sierra Madre

This spot sits on ground mapped as Bridger Peak Quartzite that formed roughly 2800 to 2500 million years ago. Metamorphic rock like this weathers into resistant float, and minerals that survive transport typically concentrate in nearby drainages.

Mapped unit: Bridger Peak Quartzite
Age: 2800–2500 Ma (Neoarchean)
Elevation: 10,650 ft

Geologic mapping via Macrostrat and the underlying state geological survey maps (CC BY 4.0). Bedrock at the surface can vary within a mapped unit.

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Sources & verification

Spot details combine the public RockHoundR location dataset, normalized mineral labels, agency land-status checks in the app, and community submissions. Coordinates are approximate until verified in the field.

State guidance last verified: April 1, 2026

BLM Wyoming
Wyoming State Geological Survey
Fossil Butte National Monument
Community submissions reviewed against published agency rules

Found at Sierra Madre

Each chip opens all spots that produce that material; the encyclopedia link opens the full ID and field guide.

Nearby rockhounding spots

Other rockhounding spots within driving distance of Sierra Madre.

Across the state line from Sierra Madre

Sierra Madre is close enough to the Wyoming border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Diamond PeakLarimer County, Colorado · 78 mi awayDiamond

Sierra Madre FAQ

Where is Sierra Madre?+

Sierra Madre is in Carbon County, Wyoming, at 41.18358, -107.03180. Nearest road: Divide Spur 1A Road.

What rocks and minerals can you find at Sierra Madre?+

Sierra Madre is reported to produce Copper, Cobalt.

Is collecting allowed at Sierra Madre?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

What tools should I bring to Sierra Madre?+

A rock hammer, gloves, and safety glasses are enough for oxidized copper ground. Look for green and blue staining on weathered rock and in old dump piles.

How do I get to Sierra Madre?+

Open the directions link to navigate to 41.18358, -107.03180 in Google Maps. The nearest road is Divide Spur 1A Road.

More rockhounding in Wyoming

See all 82 Wyoming spots →

Open Sierra Madre on the map

Use the RockHoundR app for live land overlays, weather, geology, directions, and saved finds.