Best Rockhounding Spots in North Dakota
Free rockhounding locations, pay-to-dig mines, permit rules, and community field notes for North Dakota
Top Minerals Found in North Dakota
- 💎Petrified wood
- 💎Chalcedony
- 💎Fossil dinosaur bones
- 💎Selenite
- 💎Zeolites
- 💎Coal amber
Best Regions to Explore
Best Season to Visit
Late spring through early fall. Badlands are best May–September.
Expert Collecting Tips
The North Dakota badlands expose Cretaceous and Paleocene-age sediments rich in petrified wood and fossil material. The Little Missouri National Grassland allows casual collecting of certain materials.
⭐ North Dakota Rockhounding Highlight
North Dakota's badlands preserve petrified wood forests from 55–65 million years ago, with colorful specimens washing out of the eroding buttes.
Pay-To-Dig Mines in North Dakota
Fee-based mining experiences where you keep what you find.
Cannonball Concretion Beds
Mandan, North Dakota
💰 $5-$15
Collect perfectly round iron concretions, known locally as 'cannonballs,' from the Cannonball River area. Also find lignite and quartz.
Theodore Roosevelt Badlands Fossil Hunt
Medora, North Dakota
💰 $10-$25
Hunt for petrified wood, spherical concretions, and agates in the Badlands of western North Dakota. The area is rich in ancient petrified forests.
Free Rockhounding Locations in North Dakota
Public and permitted sites where you can hunt for gems and minerals.
Theodore Roosevelt Badlands
Medora, North Dakota
Collect petrified wood and round concretions from the Badlands. The area is rich in ancient petrified forests from the Tertiary period.
Cannonball River Concretions
Mandan, North Dakota
Collect perfectly spherical iron concretions ('cannonballs') from the Cannonball River area — a unique North Dakota geological feature.
Rockhounding in North Dakota — FAQ
Where can I go rockhounding in North Dakota?
North Dakota has 2 documented free dig sites and 2 pay-to-dig mines in our database. Use the interactive map to find exact coordinates.
What gems can you find in North Dakota?
Common finds in North Dakota include Petrified Wood, Concretions, Lignite, Agate, Iron Stone, Quartz. Results vary by site and season.
Do you need a permit to rockhound in North Dakota?
Permit requirements in North Dakota depend on the land type. BLM land typically allows casual collecting; National Parks do not. Always check before you dig.
What tools do I need for rockhounding in North Dakota?
Bring a rock hammer, chisels, safety glasses, gloves, and sturdy boots. A field guide and the We Lick Rocks AI rock identifier app are also great to have on hand.