Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Washington County, Nebraska, USAi
Regional Level Types
Washington CountyCounty
NebraskaState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearchMineralogy
08903640017272347146327.jpg
Olivo Quarry, 1960

Olivo Quarry, Washington County, Nebraska, USA
04090700017684599383350.jpg
Pyrite

Fort Calhoun, Washington County, Nebraska, USA
00451440017271984416193.jpg
Marcasite

Fort Calhoun, Washington County, Nebraska, USA
08903640017272347146327.jpg
Olivo Quarry, 1960

Olivo Quarry, Washington County, Nebraska, USA
07174560017677151153363.jpg
Pyrite

Fort Calhoun, Washington County, Nebraska, USA
00451440017271984416193.jpg
Marcasite

Fort Calhoun, Washington County, Nebraska, USA
08903640017272347146327.jpg
Olivo Quarry, 1960

Olivo Quarry, Washington County, Nebraska, USA
08819430017848582887848.jpg
Pyrite

Fort Calhoun, Washington County, Nebraska, USA
Neighbouring regions:
Douglas County, Nebraska, USA
Dodge County, Nebraska, USA
Harrison County, Iowa, USA
Pottawattamie County, Iowa, USA
Burt County, Nebraska, USA
Type:
County
Largest Settlements:
PlacePopulation
Blair7,975 (2017)
Arlington1,246 (2017)
Fort Calhoun917 (2017)
Kennard359 (2017)
Herman265 (2017)
Washington147 (2017)
Mindat Locality ID:
288490
Long-form identifier:
mindat:1:2:288490:8
GUID (UUID V4):
0
Other Languages:
View 35 more...
French:
comté de Washington, Nebraska, États-Unis
German:
Washington County, Nebraska, Vereinigte Staaten
Italian:
contea di Washington, Nebraska, Stati Uniti d'America
Russian:
Вашингтон, Небраска, Соединённые Штаты Америки
Simplified Chinese:
華盛頓縣 , 內布拉斯加州, 美国
Spanish:
Condado de Washington, Nebraska, Estados Unidos
Albanian:
Washington County, Nebraska, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة واشنطن, نبراسكا, الولايات المتحدة
Armenian:
Վաշինգտոն շրջան, Նեբրասկա, Ամերիկայի Միացյալ Նահանգներ
Basque:
Washington konderria , Nebraska
Bavarian:
Washington County, Nebraska, Vaoanigte Stootn
Bengali:
ওয়াশিংটন কাউন্টি, নেব্রাস্কা, মার্কিন যুক্তরাষ্ট্র
Bishnupriya Manipuri:
ৱাশিংটন কাউন্টি, নেব্রাস্কা, তিলপারাষ্ট্র
Bulgarian:
Уошингтън, Небраска, Съединени американски щати
Cebuano:
Washington County , Nebraska
Dutch:
Washington County, Nebraska, Verenigde Staten
Esperanto:
Kantono Vaŝingtono, Nebrasko
Estonian:
Washingtoni maakond , Nebraska, Ameerika Ühendriigid
Farsi/Persian:
شهرستان واشینگتن، نبراسکا, نبراسکا, ایالات متحده آمریکا
Georgian:
ვაშინგტონის ოლქი, ნებრასკა, ამერიკის შეერთებული შტატები
Hungarian:
Washington megye, Nebraska, Amerikai Egyesült Államok
Japanese:
ワシントン郡, ネブラスカ州, アメリカ合衆国
Low Saxon/Low German:
Washington County, Nebraska, USA
Min Dong Chinese:
Washington Gông, Nebraska
Minnan / Hokkien-Taiwanese:
Washington Kūn
Norwegian:
Washington County, Nebraska, USA
Polish:
Hrabstwo Washington , Nebraska, Stany Zjednoczone
Portuguese:
Condado de Washington, Nebraska, Estados Unidos
Romanian:
Comitatul Washington, Nebraska, Statele Unite ale Americii
Sardinian:
contea de Washington, Nebraska, Istados Unidos de Amèrica
Scottish Gaelic:
Washington County, Nebraska, Na Stàitean Aonaichte
Serbian:
Округ Вашингтон , Небраска, Сједињене Америчке Државе
Serbo-Croatian:
Washington County, Nebraska, Sjedinjene Američke Države
Swedish:
Washington County, Nebraska, USA
Traditional Chinese:
華盛頓縣, 內布拉斯加州, 美國
Turkish:
Washington, Nebraska, Amerika Birleşik Devletleri
Ukrainian:
Вашингтон, Небраска, Сполучені Штати Америки
Urdu:
واشنگٹن کاؤنٹی، نیبراسکا, نیبراسکا, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Washington, Nebraska, Chủng Quốc Hoa Kỳ
Waray:
Condado han Washington, Nebraska, Estados Unidos
Western Punjabi:
واشنگٹن کاؤنٹی،نیبراسک, نیبراسکا, امریکہ


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

8 valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Calcite
Formula: CaCO3
References:
Bill Morgenstern
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ 'Fayalite-Forsterite Series'
Description: Olivine composition (Fa19) characteristic of L chondrite chemical group.
ⓘ Marcasite
Formula: FeS2
ⓘ Native Iron
Formula: Fe
ⓘ Native Iron var. Kamacite
Formula: (Fe,Ni)
ⓘ 'Orthopyroxene Subgroup'
ⓘ 'Plessite'
ⓘ Pyrite
Formula: FeS2
ⓘ Taenite
Formula: (Ni,Fe)
ⓘ Troilite
Formula: FeS

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Iron1.AE.05Fe
ⓘvar. Kamacite1.AE.05(Fe,Ni)
ⓘTaenite1.AE.10(Ni,Fe)
Group 2 - Sulphides and Sulfosalts
ⓘTroilite2.CC.10FeS
ⓘPyrite2.EB.05aFeS2
ⓘMarcasite2.EB.10aFeS2
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘDolomite5.AB.10CaMg(CO3)2
Unclassified
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Plessite'-
ⓘ'Orthopyroxene Subgroup'-

List of minerals for each chemical element

CCarbon
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
OOxygen
Oⓘ CalciteCaCO3
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ DolomiteCaMg(CO3)2
Oⓘ Fayalite-Forsterite Series
MgMagnesium
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ Fayalite-Forsterite Series
SiSilicon
Siⓘ Fayalite-Forsterite Series
SSulfur
Sⓘ MarcasiteFeS2
Sⓘ PyriteFeS2
Sⓘ TroiliteFeS
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ DolomiteCaMg(CO3)2
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ Native IronFe
Feⓘ Native Iron var. Kamacite(Fe,Ni)
Feⓘ MarcasiteFeS2
Feⓘ PyriteFeS2
Feⓘ Taenite(Ni,Fe)
Feⓘ TroiliteFeS
Feⓘ Fayalite-Forsterite Series
NiNickel
Niⓘ Native Iron var. Kamacite(Fe,Ni)
Niⓘ Taenite(Ni,Fe)

Fossils

There are 6 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.

Occurrences6
Youngest Fossil Listed303 Ma (Carboniferous)
Oldest Fossil Listed307 Ma (Carboniferous)
Stratigraphic Units
UnitNo. OccurrencesAge
Kansas City - Swope - Hushpuckney4305.9 - 303.4 Ma (Carboniferous)
Bronson - Dennis2307 - 303.7 Ma (Carboniferous)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Concavicaris
genus		Animalia : Arthropoda : Thylacocephala : Concavicarida : Concavicaris305.9 - 303.4 Ma
Carboniferous
Iniopteryx
genus		Animalia : Chordata : Chondrichthyes : Iniopterygia : Iniopterygidae : Iniopteryx307 - 303.7 Ma
Carboniferous
Gorgonophontes peleron
species		Animalia : Arthropoda : Malacostraca : Stomatopoda : Gorgonophontes : Gorgonophontes peleron305.9 - 303.4 Ma
Carboniferous
Peachocaris acanthouraea
species		Eocarida : Peachocaris : Peachocaris acanthouraea305.9 - 303.4 Ma
Carboniferous
Mycterops whitei
species		Animalia : Arthropoda : Xiphosura : Eurypterida : Mycteropidae : Mycterops : Mycterops whitei305.9 - 303.4 Ma
Carboniferous
Iniopera richardsoni
species		Animalia : Chordata : Chondrichthyes : Iniopterygia : Sibyrhynchidae : Iniopera : Iniopera richardsoni307 - 303.7 Ma
Carboniferous
Fossil LocalitiesClick to show 2 fossil localities

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Washington_County,_Nebraska
Wikidata ID:Q495979
GeoNames ID:5081383

Localities in this Region

USA

Other Regions, Features and Areas that Intersect

North AmericaContinent
North America PlateTectonic Plate
USA

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 NavTopMineral ListRock TypesFossilsOther DatabasesLocalities in RegionOther Regions
 
and/or  
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: September 6, 2026 00:28:21 Page updated: July 25, 2026 22:44:34
Go to top of page