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North Dakota, USA

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Badlands Near Marmarth (1915 or earlier)

Slope Co., North Dakota, USA
Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 46° 52' 37'' North , 96° 47' 21'' West (est.)
Margin of Error:~0km

Western North Dakota is in the Williston Basin, an oil and gas producing area. Sedimentary rock outcropping ranges in age from the late Cretaceous Niobrara formation to late Tertiary. The eastern portion of the state is covered with several hundred feet of glacial deposits. Agates and petrified wood can be found in numerous gravel deposits throughout the state.

Mineral List

Mineral list contains entries from the region specified including sub-localities

29 valid minerals.

Rock Types Recorded

Entries shown in red are rocks recorded for this region.

Note: this is a very new system on and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Localities in this Region

The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Mineral and Water Resources of North Dakota (1973) ed Landis N. Dak. Geol Surv. Bull 63

North Dakota Geological Survey Newsletter Summer 1995

Rock and Mineral Collecting in North Dakota NDGS Newsletter June 1976

External Links

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