Group 3 - Halides
ⓘ	Halite	3.AA.20	NaCl
ⓘ	Sylvite	3.AA.20	KCl
Group 4 - Oxides and Hydroxides
ⓘ	Quartz var. Chalcedony	4.DA.05	SiO₂
ⓘ		4.DA.05	SiO₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Gypsum	7.CD.40	CaSO₄ · 2H₂O
Group 9 - Silicates
ⓘ	Erionite-Ca	9.GD.20	(Ca,K₂,Na₂)₂[Al₄Si₁₄O₃₆] · 15H₂O
ⓘ	Erionite-Na	9.GD.20	(Na₂,K₂,Ca)₂[Al₄Si₁₄O₃₆] · 15H₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Gypsum	CaSO₄ · 2H₂O
H	ⓘ Erionite-Ca	(Ca,K₂,Na₂)₂[Al₄Si₁₄O₃₆] · 15H₂O
H	ⓘ Erionite-Na	(Na₂,K₂,Ca)₂[Al₄Si₁₄O₃₆] · 15H₂O
O	Oxygen
O	ⓘ Quartz var. Chalcedony	SiO₂
O	ⓘ Gypsum	CaSO₄ · 2H₂O
O	ⓘ Quartz	SiO₂
O	ⓘ Erionite-Ca	(Ca,K₂,Na₂)₂[Al₄Si₁₄O₃₆] · 15H₂O
O	ⓘ Erionite-Na	(Na₂,K₂,Ca)₂[Al₄Si₁₄O₃₆] · 15H₂O
Na	Sodium
Na	ⓘ Halite	NaCl
Na	ⓘ Erionite-Ca	(Ca,K₂,Na₂)₂[Al₄Si₁₄O₃₆] · 15H₂O
Na	ⓘ Erionite-Na	(Na₂,K₂,Ca)₂[Al₄Si₁₄O₃₆] · 15H₂O
Al	Aluminium
Al	ⓘ Erionite-Ca	(Ca,K₂,Na₂)₂[Al₄Si₁₄O₃₆] · 15H₂O
Al	ⓘ Erionite-Na	(Na₂,K₂,Ca)₂[Al₄Si₁₄O₃₆] · 15H₂O
Si	Silicon
Si	ⓘ Quartz var. Chalcedony	SiO₂
Si	ⓘ Quartz	SiO₂
Si	ⓘ Erionite-Ca	(Ca,K₂,Na₂)₂[Al₄Si₁₄O₃₆] · 15H₂O
Si	ⓘ Erionite-Na	(Na₂,K₂,Ca)₂[Al₄Si₁₄O₃₆] · 15H₂O
S	Sulfur
S	ⓘ Gypsum	CaSO₄ · 2H₂O
Cl	Chlorine
Cl	ⓘ Halite	NaCl
Cl	ⓘ Sylvite	KCl
K	Potassium
K	ⓘ Sylvite	KCl
K	ⓘ Erionite-Ca	(Ca,K₂,Na₂)₂[Al₄Si₁₄O₃₆] · 15H₂O
K	ⓘ Erionite-Na	(Na₂,K₂,Ca)₂[Al₄Si₁₄O₃₆] · 15H₂O
Ca	Calcium
Ca	ⓘ Gypsum	CaSO₄ · 2H₂O
Ca	ⓘ Erionite-Ca	(Ca,K₂,Na₂)₂[Al₄Si₁₄O₃₆] · 15H₂O
Ca	ⓘ Erionite-Na	(Na₂,K₂,Ca)₂[Al₄Si₁₄O₃₆] · 15H₂O

Fossils

There are 11 fossil localities from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences

Youngest Fossil Listed

16.0 Ma (Miocene)

Oldest Fossil Listed

450 Ma (Late/Upper Ordovician)

Stratigraphic Units

Click here to view 6 stratigraphic units.

Fossils from Region

Click here to show the list.

Accepted Name	Hierarchy	Age
Brachycrus genus	Animalia : Chordata : Mammalia : Artiodactyla : Merycoidodontidae : *Brachycrus*	20.43 - 15.97 Ma Miocene
Merychyus genus	Animalia : Chordata : Mammalia : Artiodactyla : Merycoidodontidae : *Merychyus*	30.8 - 20.43 Ma Cenozoic
Merycochoerus genus	Animalia : Chordata : Mammalia : Artiodactyla : Merycoidodontidae : *Merycochoerus*	30.8 - 20.43 Ma Cenozoic
Beringiaphyllum cupanioides species	Beringiaphyllum : *Beringiaphyllum cupanioides*	56.8 - 55.8 Ma Paleogene
Nordenskioldia borealis species	Nordenskioldia : *Nordenskioldia borealis*	66 - 56 Ma Paleocene
Quercus genus	Plantae : Tracheophyta : Magnoliopsida : Fagales : Fagaceae : *Quercus*	66 - 56 Ma Paleocene
Equisetum genus	Plantae : Tracheophyta : Polypodiopsida : Equisetales : Equisetaceae : *Equisetum*	66 - 56 Ma Paleocene
Equisetum magnum species	Plantae : Tracheophyta : Polypodiopsida : Equisetales : Equisetaceae : Equisetum : *Equisetum magnum*	56.8 - 55.8 Ma Paleogene
Isoetites horridus species	Plantae : Pteridophyta : Lycopsida : Isoetaceae : Isoetites : *Isoetites horridus*	55.8 - 50.3 Ma Eocene
Osmunda genus	Plantae : Tracheophyta : Polypodiopsida : Osmundales : Osmundaceae : *Osmunda*	56.8 - 55.8 Ma Paleogene
Lygodium kaulfussi species	Plantae : Tracheophyta : Polypodiopsida : Schizaeales : Lygodiaceae : Lygodium : *Lygodium kaulfussi*	55.8 - 50.3 Ma Eocene
Woodwardia gravida species	Plantae : Tracheophyta : Polypodiopsida : Polypodiales : Blechnaceae : Woodwardia : *Woodwardia gravida*	66 - 50.3 Ma Paleogene
Salvinia preauriculata species	Plantae : Tracheophyta : Polypodiopsida : Salviniales : Salviniaceae : Salvinia : *Salvinia preauriculata*	55.8 - 50.3 Ma Eocene
Glyptostrobus europaeus species	Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : Glyptostrobus : *Glyptostrobus europaeus*	56.8 - 55.8 Ma Paleogene
Metasequoia occidentalis species	Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : Metasequoia : *Metasequoia occidentalis*	66 - 50.3 Ma Paleogene
Thuites interruptus species	Plantae : Tracheophyta : Pinopsida : Pinales : Cupressaceae : Thuites : *Thuites interruptus*	66 - 50.3 Ma Paleogene
Sparganium stygium species	Plantae : Tracheophyta : Liliopsida : Poales : Typhaceae : Sparganium : *Sparganium stygium*	55.8 - 50.3 Ma Eocene
Corylus acutertiaria species	Plantae : Tracheophyta : Magnoliopsida : Fagales : Betulaceae : Corylus : *Corylus acutertiaria*	66 - 50.3 Ma Paleogene
Chaetoptelea microphylla species	Plantae : Spermatophyta : Magnoliopsida : Urticales : Ulmaceae : Chaetoptelea : *Chaetoptelea microphylla*	55.8 - 50.3 Ma Eocene
Nelumbo aureavallis species	Plantae : Tracheophyta : Magnoliopsida : Proteales : Nelumbonaceae : Nelumbo : *Nelumbo aureavallis*	66 - 50.3 Ma Paleogene
Cercidiphyllum genetrix species	Plantae : Spermatophyta : Magnoliopsida : Saxifragales : Cercidiphyllaceae : Cercidiphyllum : *Cercidiphyllum genetrix*	56.8 - 55.8 Ma Paleogene
Menispermites parvareolatus species	Plantae : Tracheophyta : Magnoliopsida : Ranunculales : Menispermaceae : Menispermites : *Menispermites parvareolatus*	56.8 - 55.8 Ma Paleogene
Persites argutus species	Plantae : Tracheophyta : Magnoliopsida : Laurales : Lauraceae : Persites : *Persites argutus*	66 - 50.3 Ma Paleogene
Averrhoites affinis species	Plantae : Spermatophyta : Magnoliopsida : Sapindales : Oxalidaceae : Averrhoites : *Averrhoites affinis*	66 - 50.3 Ma Paleogene
Stillingia casca species	Plantae : Tracheophyta : Magnoliopsida : Malpighiales : Euphorbiaceae : Stillingia : *Stillingia casca*	55.8 - 50.3 Ma Eocene
Meliosma longifolia species	Plantae : Spermatophyta : Magnoliopsida : Ranunculales : Sabiaceae : Meliosma : *Meliosma longifolia*	56.8 - 55.8 Ma Paleogene
Ternstroemites aureavallis species	Plantae : Tracheophyta : Magnoliopsida : Ericales : Pentaphylacaceae : Ternstroemites : *Ternstroemites aureavallis*	55.8 - 50.3 Ma Eocene
Dicotylophyllum oblongatum species	Plantae : Tracheophyta : Magnoliopsida : Dicotylophyllum : *Dicotylophyllum oblongatum*	56.8 - 55.8 Ma Paleogene
Cocculus flabella species	Plantae : Tracheophyta : Magnoliopsida : Ranunculales : Menispermaceae : Cocculus : *Cocculus flabella*	56.8 - 55.8 Ma Paleogene
Ampelopsis acerifolia species	Plantae : Tracheophyta : Magnoliopsida : Vitales : Vitaceae : Ampelopsis : *Ampelopsis acerifolia*	66 - 50.3 Ma Paleogene
Dombeya novimundi species	Plantae : Tracheophyta : Magnoliopsida : Malvales : Malvaceae : Dombeya : *Dombeya novimundi*	55.8 - 50.3 Ma Eocene
Kalmia elliptica species	Plantae : Tracheophyta : Magnoliopsida : Ericales : Ericaceae : Kalmia : *Kalmia elliptica*	66 - 50.3 Ma Paleogene
Sceptropora facula species	Animalia : Bryozoa : Stenolaemata : Cryptostomida : Arthrostylidae : Sceptropora : *Sceptropora facula*	449.5 - 443.7 Ma Paleozoic
Quercus sullyi species	Plantae : Tracheophyta : Magnoliopsida : Fagales : Fagaceae : Quercus : *Quercus sullyi*	66 - 56 Ma Paleocene
Quercus yulensis species	Plantae : Tracheophyta : Magnoliopsida : Fagales : Fagaceae : Quercus : *Quercus yulensis*	66 - 56 Ma Paleocene

Fossil Localities

Click to show 11 fossil localities

Other Databases

Wikipedia:	https://en.wikipedia.org/wiki/Dunn_County,_North_Dakota
Wikidata ID:	Q28503
GeoNames ID:	5688859

Localities in this Region

USA

North Dakota
- Dunn County

Other Regions, Features and Areas that Intersect

North AmericaContinent

North America PlateTectonic Plate

Dakota DomainDomain
Trans-Hudson OrogenOrogenic Belt
Williston BasinBasin

This page contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

Quick NavTop Mineral List Rock Types Fossils Other Databases Localities in Region Other Regions

Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: October 21, 2026 00:41:09 Page updated: August 17, 2025 13:50:59

Go to top of page

Dunn County, North Dakota, USAiRegional Level TypesDunn CountyCounty North DakotaState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }

Select Mineral List Type

Mineral List

Rock Types Recorded

Select Rock List Type

Detailed Mineral List:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

List of minerals for each chemical element

Fossils

Other Databases

Localities in this Region

Other Regions, Features and Areas that Intersect

Dunn County, North Dakota, USA i
Regional Level Types
Dunn County County
North Dakota State
USA Country