Cheyenne River - Buffalo Gap: Fairburn Agate & Agate Rockhounding in Pennington County, South Dakota

Updated August 2026

Cheyenne River - Buffalo Gap is a mapped rockhounding spot in Pennington County, South Dakota. Reported finds include fairburn agate, agate, rose quartz, chalcedony. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: Pennington County
State: South Dakota
Coordinates: 43.76416, -102.72466

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.

Sources: RockHoundR public spot dataset, app land overlays, and local agency review before each trip.

Found at Cheyenne River - Buffalo Gap

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 Cheyenne River - Buffalo Gap.

Across the state line from Cheyenne River - Buffalo Gap

Cheyenne River - Buffalo Gap is close enough to the South Dakota border that the next-closest rockhounding spots are in a neighboring state. Worth knowing if you are already on the road.

Cheyenne River - Buffalo Gap FAQ

Where is Cheyenne River - Buffalo Gap?+

Cheyenne River - Buffalo Gap is in Pennington County, South Dakota, at 43.76416, -102.72466.

What rocks and minerals can you find at Cheyenne River - Buffalo Gap?+

Cheyenne River - Buffalo Gap is reported to produce Fairburn Agate, Agate, Rose Quartz, Chalcedony.

Is collecting allowed at Cheyenne River - Buffalo Gap?+

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 Cheyenne River - Buffalo Gap?+

Most agate and jasper is surface float: bring a spray bottle, a pick or small shovel, and a sturdy bag. Wet stones show their banding and translucence.

How do I get to Cheyenne River - Buffalo Gap?+

Open the directions link to navigate to 43.76416, -102.72466 in Google Maps. Some spots are remote, so check road conditions before driving out.

More rockhounding in South Dakota

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Open Cheyenne River - Buffalo Gap on the map

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