Casper: Beryl & Muscovite Rockhounding in Natrona County, Wyoming
- Minerals reported
- 3
- Elevation
- 6,930 ft
- Best months
- April to October
Casper is a mapped rockhounding spot in Natrona County, Wyoming. Reported finds include beryl, muscovite, tourmaline. Below: coordinates, access notes, nearby spots, and trip-planning links.
Plan your visit
Permission required before collecting
- County
- Natrona County
- State
- Wyoming
- Nearest road
- Ponderosa Road
- Coordinates
- 42.71405, -106.25597
Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.
Land & collecting status
Permission required before collecting
Requires landowner or agency permission before any collecting. Do not enter without explicit authorization.
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.
Best time to visit Casper
Comfortable months (45 to 90°F highs)
Best months: April to October. Typical highs run 80°F in midsummer and 31°F in midwinter, with winter lows near 9°F.
Climate normals: NOAA 1991-2020 monthlies, BATES CREEK #2 station (8 mi away), adjusted for elevation.
Geology at Casper
This spot sits on ground mapped as Casper Formation that formed roughly 315 to 275 million years ago. Coarse pegmatite minerals typically weather out of their dikes and concentrate in the soils directly downslope.
- Mapped unit
- Casper Formation
- Age
- 315–275 Ma (Middle Pennsylvanian to Early Permian)
- Elevation
- 6,930 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.
Today's weather
Is today a good day to go?
The app shows live weather, recent rain, and a daily rockhounding score for Casper.
Get the appSources & 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:
- BLM Wyoming
- Wyoming State Geological Survey
- Fossil Butte National Monument
- Community submissions reviewed against published agency rules
Found at Casper
Each name 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 Casper.
- CasperNatrona County, Wyoming · 10 mi awayAgate, Alabaster, Amazonite
- Deer Creek Canyon MineConverse County, Wyoming · 11 mi awayChromite
- Poison Spider CreekNatrona County, Wyoming · 17 mi awayAgate, Chalcedony, Jasper
- Box Elder CanyonConverse County, Wyoming · 25 mi awayGeode, Quartz
- Shirley BasinCarbon County, Wyoming · 26 mi awayOpalized Wood
- Converse CountyConverse County, Wyoming · 28 mi awayCopper, Chalcopyrite
- Moss Agate HillConverse County, Wyoming · 29 mi awayMoss Agate, Chalcedony, Jasper
- Pathfinder ReservoirNatrona County, Wyoming · 40 mi awayBanded Iron Formation
Casper FAQ
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More rockhounding in Wyoming
See all 92 Wyoming spots →
Open Casper on the map
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