Keystone — Rockhounding in Pennington County, South Dakota
Keystone is a mapped rockhounding spot in Pennington County, South Dakota. Reported finds include tourmaline, spodumene, lepidolite, autunite, golden beryl, and more. Below: coordinates, access notes, nearby spots, and trip-planning links.
Map showing Keystone in Pennington County, South Dakota
Quick details
- Access
- Public area
- County
- Pennington County
- State
- South Dakota
- Nearest road
- Blair Street
- Postcode
- 57751
- Coordinates
- 43.89498, -103.41734
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.
Found at Keystone
Each chip links to all spots in the U.S. that produce that material.
Nearby rockhounding spots
Other rockhounding spots within driving distance of Keystone.
- November MineCuster County · 7 mi awayArsenopyrite, Fluorapatite
- FairburnCuster County · 9 mi awayFairburn Agates
- Hill CityPennington County · 9 mi awayBeryl, Red Cassiterite, Cervantite
- Laughing Water CreekCuster County · 11 mi awayColumbite, Gold, Silver
- Tin MountainCuster County · 18 mi awayFluorapatite, Quartz, Almandine Garnet
- SummersetMeade County · 22 mi awayFossils
- RochfordPennington County · 23 mi awayArsenopyrite, Galena, Gold
- PiedmontMeade County · 23 mi awaySelenite
Keystone FAQ
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What rocks and minerals can you find at Keystone?+
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More rockhounding in South Dakota
See all 43 South Dakota spots →Open Keystone on the map
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