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Eau Claire County, Wisconsin, USAi
Regional Level Types
Eau Claire CountyCounty
WisconsinState
USACountry

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PhotosMapsSearch
08398920017272080334241.jpg
Muskrat Creek pegmatite

Muskrat Creek pegmatite, Wilson, Eau Claire County, Wisconsin, USA
01207340017272078752869.jpg
Big Falls

Big Falls, Eau Claire County, Wisconsin, USA
01295970017272080341054.jpg
Muscovite, etc.

Muskrat Creek pegmatite, Wilson, Eau Claire County, Wisconsin, USA
08398920017272080334241.jpg
Muskrat Creek pegmatite

Muskrat Creek pegmatite, Wilson, Eau Claire County, Wisconsin, USA
04493120017272080346972.jpg
Big Falls

Big Falls, Eau Claire County, Wisconsin, USA
01295970017272080341054.jpg
Muscovite, etc.

Muskrat Creek pegmatite, Wilson, Eau Claire County, Wisconsin, USA
04931150017272080352398.jpg
Muskrat Creek pegmatite

Muskrat Creek pegmatite, Wilson, Eau Claire County, Wisconsin, USA
01207340017272078752869.jpg
Big Falls

Big Falls, Eau Claire County, Wisconsin, USA
Neighbouring regions:
Jackson County, Wisconsin, USA
Chippewa County, Wisconsin, USA
Clark County, Wisconsin, USA
Dunn County, Wisconsin, USA
Buffalo County, Wisconsin, USA
Pepin County, Wisconsin, USA
Trempealeau County, Wisconsin, USA
Type:
County
Largest Settlements:
PlacePopulation
Eau Claire67,778 (2017)
Altoona7,321 (2017)
Augusta1,532 (2017)
Seymour1,418 (2017)
Fall Creek1,315 (2017)
Fairchild563 (2017)
Mindat Locality ID:
53978
Long-form identifier:
mindat:1:2:53978:1
GUID (UUID V4):
0
Other Languages:
View 31 more...
French:
comté d'Eau Claire, Wisconsin, États-Unis
German:
Eau Claire County, Wisconsin, Vereinigte Staaten
Italian:
contea di Eau Claire, Wisconsin, Stati Uniti d'America
Russian:
О-Клэр, Висконсин, Соединённые Штаты Америки
Simplified Chinese:
清水縣 , 威斯康辛州, 美国
Spanish:
Condado de Eau Claire, Wisconsin, Estados Unidos
Albanian:
Eau Claire County, Wisconsin, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة يو كلير, ويسكونسن, الولايات المتحدة
Basque:
Eau Claire konderria , Wisconsin
Bavarian:
Eau Claire County, Wisconsin, Vaoanigte Stootn
Bishnupriya Manipuri:
ইয়ু ক্লেয়ারে কাউন্টি, উইসকনসিন, তিলপারাষ্ট্র
Bulgarian:
Оу Клер, Уисконсин, Съединени американски щати
Cebuano:
Eau Claire County, Wisconsin
Danish:
Eau Claire Amt, Wisconsin, USA
Dutch:
Eau Claire County, Wisconsin, Verenigde Staten
Estonian:
Eau Claire'i maakond, Wisconsin, Ameerika Ühendriigid
Finnish:
Eau Clairen piirikunta, Wisconsin, Yhdysvallat
Hungarian:
Eau Claire megye, Wisconsin, Amerikai Egyesült Államok
Japanese:
オークレア郡, ウィスコンシン州, アメリカ合衆国
Latin:
Eau Claire Comitatus, Visconsinia, Civitates Foederatae Americae
Low Saxon/Low German:
Eau Claire County, Wisconsin, USA
Min Dong Chinese:
Eau Claire Gông, Wisconsin
Minnan / Hokkien-Taiwanese:
Eau Claire Kūn
Norwegian:
Eau Claire County, Wisconsin, USA
Polish:
Hrabstwo Eau Claire, Wisconsin, Stany Zjednoczone
Portuguese:
Condado de Eau Claire, Wisconsin, Estados Unidos
Romanian:
Comitatul Eau Claire, Wisconsin, Statele Unite ale Americii
Sardinian:
contea de Eau Claire, Wisconsin, Istados Unidos de Amèrica
Serbian:
Округ О Клер , Висконсин, Сједињене Америчке Државе
Serbo-Croatian:
Eau Claire County, Wisconsin, Sjedinjene Američke Države
Swedish:
Eau Claire County, Wisconsin, USA
Traditional Chinese:
清水縣, 威斯康辛州, 美國
Turkish:
Eau Claire County, Wisconsin, Amerika Birleşik Devletleri
Ukrainian:
О-Клер, Вісконсин, Сполучені Штати Америки
Urdu:
اوو کلیئر کاؤنٹی، وسکونسن, وسکونسن, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Eau Claire, Wisconsin, Chủng Quốc Hoa Kỳ
Waray:
Condado han Eau Claire, Wisconsin, Estados Unidos


Eau Claire County is underlain mostly by Cambrian sandstones. Good outcrops occur on many bluffs (such as Mt. Simon in Eau Claire) and along rivers, such as the Chippewa. Complex Precambrian rocks, including gneiss, amphibolites and granites are exposed along the Eau Claire River and its tributaries, as is well shown at Big Falls County Park. Glacial drift in the County occurs along large meltwater channels. The drift can provide some interesting samples to the diligent collector, including "float" copper, banded iron formation and "Lake Superior" agates.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

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

10 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:

ⓘ Almandine
Formula: Fe2+3Al2(SiO4)3
ⓘ Aluminoceladonite
Formula: K(MgAl◻)(Si4O10)(OH)2
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ 'Chlorite Group'
ⓘ Cummingtonite
Formula: ◻Mg2Mg5(Si8O22)(OH)2
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ 'K Feldspar'
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
ⓘ Titanite
Formula: CaTi(SiO4)O
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
Group 9 - Silicates
ⓘAlmandine9.AD.25Fe2+3Al2(SiO4)3
ⓘZircon9.AD.30Zr(SiO4)
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘCummingtonite9.DE.05◻Mg2Mg5(Si8O22)(OH)2
ⓘMuscovite
var. Illite		9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ9.EC.15KAl2(AlSi3O10)(OH)2
ⓘAluminoceladonite9.EC.15K(MgAl◻)(Si4O10)(OH)2
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Hornblende Root Name Group'-◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ'K Feldspar'-

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
OOxygen
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ AlmandineFe32+Al2(SiO4)3
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ RutileTiO2
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ ZirconZr(SiO4)
Oⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
Oⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Mgⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
AlAluminium
Alⓘ AlmandineFe32+Al2(SiO4)3
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
Alⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
SiSilicon
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ AlmandineFe32+Al2(SiO4)3
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ ZirconZr(SiO4)
Siⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
Siⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ AluminoceladoniteK(MgAl◻)(Si4O10)(OH)2
CaCalcium
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ RutileTiO2
Tiⓘ TitaniteCaTi(SiO4)O
FeIron
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ AlmandineFe32+Al2(SiO4)3
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ZrZirconium
Zrⓘ ZirconZr(SiO4)

Fossils

There are 2 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.

Occurrences2
Youngest Fossil Listed485 Ma (Early/Lower Ordovician)
Oldest Fossil Listed501 Ma (Cambrian)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Trilobita
class		Animalia : Arthropoda : Trilobita501 - 485.4 Ma
Cambrian
Chippewaella patellitheca
species		Animalia : Mollusca : Gastropoda : Chippewaella : Chippewaella patellitheca501 - 485.4 Ma
Cambrian
Fossil LocalitiesClick to show 1 fossil locality

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Eau_Claire_County,_Wisconsin
Wikidata ID:Q484133
GeoNames ID:5251439

Localities in this Region

USA
USA

Other Regions, Features and Areas that Intersect

North AmericaContinent
North America PlateTectonic Plate

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.

References

Dott, R.H. & J.W. Attig (2004) Roadside Geology of Wisconsin: Mountain Press, 346 p.
wgnhs.uwex.edu (n.d.) http://wgnhs.uwex.edu/wisconsin-geology/minerals-wisconsin/
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