Souris River Rockhounding Area

Quartz Crystals

Clear, smoky, and rose quartz crystals are among the most common and rewarding rockhounding finds. Arkansas produces world-class quartz.

Also found at:

• Lake Martin Rockhounding Area
• M & G Mine
• Horseshoe Mine

Agates

Banded chalcedony prized for their colors and patterns. Lake Superior agates, Fairburn agates, and Montana moss agates are especially famous.

Also found at:

• Piedmont Gem Panning
• Black Warrior River Sites
• Quartzsite Gem Show

Chalcedony

Microcrystalline quartz found in many varieties including agate, jasper, and petrified wood. Widespread throughout the US in volcanic and sedimentary rocks.

Also found at:

• Black Warrior River Sites
• Saddle Mountain
• Opal Basin

Jasper

Opaque, fine-grained chalcedony prized for its rich earthy colors and patterns. Oregon, Washington, Idaho, and Alabama produce exceptional jasper varieties.

Also found at:

• Black Warrior River Sites
• Lyman Orchards Gem Mining
• Pepper Creek

Fossils

From shark teeth in Florida to dinosaurs in Montana, the US offers world-class fossil hunting for all skill levels.

Also found at:

• Alabama Gold Camp
• Black Warrior River Sites
• Cathedral Caverns State Park - Gem Mining

North Dakota Petrified Wood Beds

Amidon, North Dakota · Public Land

Slope County badlands for petrified wood and agate. The Little Missouri River gravels produce beautiful specimens.

North Dakota Carnotite Beds

Bismarck, North Dakota · Public Land

Carnotite-bearing sandstones and gravel pits in western North Dakota for agate, jasper, and unusual uranium-mineral specimens.

Hell Creek Formation (ND)

Marmarth, North Dakota · BLM Land

World-famous dinosaur fossil beds of the Late Cretaceous Hell Creek Formation (67 million years old). T. rex, triceratops, Edmontosaurus, crocodiles, ...

Little Missouri River Agates

Medora, North Dakota · Public Land

River gravels and badlands exposures for agate, petrified wood, and chalcedony in the Little Missouri River valley.

Hell Creek Fossils LLC

Marmarth, North Dakota · Fee Dig

All-inclusive public dinosaur paleontology dig in the badlands of North Dakota near Marmarth. Participants work alongside paleontologists to discover,...

NDGS Public Fossil Digs (Friends of NDGS Paleo)

Bismarck / Pembina Gorge / Dickinson, North Dakota · Public Land

Public fossil dig program run by Friends of NDGS Paleo in partnership with the North Dakota Geological Survey. Three dig locations: Bismarck Area (Hel...