Railroad Buttes: Fairburn Agate & Agate Rockhounding in Pennington County, South Dakota

Updated August 2026

Railroad Buttes 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: 43.88777, -102.84129

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 Railroad Buttes

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 Railroad Buttes.

Across the state line from Railroad Buttes

Railroad Buttes 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.

Railroad Buttes FAQ

Where is Railroad Buttes?+

Railroad Buttes is in Pennington County, South Dakota, at 43.88777, -102.84129.

What rocks and minerals can you find at Railroad Buttes?+

Railroad Buttes is reported to produce Fairburn Agate, Agate, Rose Quartz, Chalcedony.

Is collecting allowed at Railroad Buttes?+

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 Railroad Buttes?+

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 Railroad Buttes?+

Open the directions link to navigate to 43.88777, -102.84129 in Google Maps. Some spots are remote, so check road conditions before driving out.

More rockhounding in South Dakota

See all 47 South Dakota spots →

Open Railroad Buttes on the map

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