Moss Agate Hill: Moss Agate & Chalcedony Rockhounding in Converse County, Wyoming
- Minerals reported
- 3
- Elevation
- 6,310 ft
- Best months
- March to October
Moss Agate Hill is a mapped rockhounding spot in Converse County, Wyoming. Reported finds include moss agate, chalcedony, jasper. Below: coordinates, access notes, nearby spots, and trip-planning links.
Plan your visit
Generally open to casual rockhounding
- County
- Converse County
- State
- Wyoming
- Nearest road
- Spring Canyon Road
- Coordinates
- 42.64051, -105.68483
Coordinates are approximate. Confirm the exact ground in the RockHoundR app, where land overlays show which agency manages the area.
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.
Best time to visit Moss Agate Hill
Comfortable months (45 to 90°F highs)
Best months: March to October. Typical highs run 83°F in midsummer and 34°F in midwinter, with winter lows near 7°F.
Climate normals: NOAA 1991-2020 monthlies, DOUGLAS 1 SE station (18 mi away), adjusted for elevation.
Geology at Moss Agate Hill
This spot sits on ground mapped as Casper Formation that formed roughly 315 to 275 million years ago. Tough silica like agate and jasper typically survives weathering and collects as float in drainages and gravel.
- Mapped unit
- Casper Formation
- Age
- 315–275 Ma (Middle Pennsylvanian to Early Permian)
- Elevation
- 6,310 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
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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 Moss Agate Hill
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 Moss Agate Hill.
- Box Elder CanyonConverse County, Wyoming · 10 mi awayGeode, Quartz
- Converse CountyConverse County, Wyoming · 11 mi awayCopper, Chalcopyrite
- Deer Creek Canyon MineConverse County, Wyoming · 18 mi awayChromite
- CasperNatrona County, Wyoming · 29 mi awayBeryl, Muscovite, Tourmaline
- CasperNatrona County, Wyoming · 34 mi awayAgate, Alabaster, Amazonite
- Glendo Red HillsPlatte County, Wyoming · 34 mi awayBanded Iron Formation
- Shirley BasinCarbon County, Wyoming · 36 mi awayOpalized Wood
- Poison Spider CreekNatrona County, Wyoming · 46 mi awayAgate, Chalcedony, Jasper
Moss Agate Hill FAQ
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More rockhounding in Wyoming
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