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Eau Claire Co., Wisconsin, USAi
Regional Level Types
Eau Claire Co.County
WisconsinState
USACountry

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Locality type:
Largest Settlements:
PlacePopulation
Eau Claire67,778 (2017)
Altoona7,321 (2017)
Augusta1,532 (2017)
Seymour1,418 (2017)
Fall Creek1,315 (2017)
Fairchild563 (2017)
Other Languages:
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 Strunz Dana 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

9 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org 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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Almandine
Formula: Fe2+3Al2(SiO4)3
Reference: Myers, P., E.R. Maye, M. L. Cummings & D. R. Maercklein (1974), Precambrian rocks of the Chippewa Region, Wisconsin, in: 38th Annual Tri-State Geological Field Conference Guidebook, Eau Claire, Wisconsin, P.E. Myers (editor): 9-62.
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Myers, P., E.R. Maye, M. L. Cummings & D. R. Maercklein (1974), Precambrian rocks of the Chippewa Region, Wisconsin, in: 38th Annual Tri-State Geological Field Conference Guidebook, Eau Claire, Wisconsin, P.E. Myers (editor): 35-39.
'Biotite'
'Chlorite Group'
Reference: Myers, P., E.R. Maye, M. L. Cummings & D. R. Maercklein (1974), Precambrian rocks of the Chippewa Region, Wisconsin, in: 38th Annual Tri-State Geological Field Conference Guidebook, Eau Claire, Wisconsin, P.E. Myers (editor): 9-62.
Cummingtonite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
Reference: Myers, P., E.R. Maye, M. L. Cummings & D. R. Maercklein (1974), Precambrian rocks of the Chippewa Region, Wisconsin, in: 38th Annual Tri-State Geological Field Conference Guidebook, Eau Claire, Wisconsin, P.E. Myers (editor): 9-62.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Myers, P., E.R. Maye, M. L. Cummings & D. R. Maercklein (1974), Precambrian rocks of the Chippewa Region, Wisconsin, in: 38th Annual Tri-State Geological Field Conference Guidebook, Eau Claire, Wisconsin, P.E. Myers (editor): 9-62.
'Hornblende'
'K Feldspar'
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Quartz
Formula: SiO2
Rutile
Formula: TiO2
Reference: Cummings,M.L.,(1984) The Eau Claire River Complex:A Metamorphosed Precambrain Mafic Intrusion In Western Wisconsin:Geological Society of America Bulletion,v.95,p.75-86
Titanite
Formula: CaTi(SiO4)O
Reference: Myers, P., E.R. Maye, M. L. Cummings & D. R. Maercklein (1974), Precambrian rocks of the Chippewa Region, Wisconsin, in: 38th Annual Tri-State Geological Field Conference Guidebook, Eau Claire, Wisconsin, P.E. Myers (editor): 9-62.
Zircon
Formula: Zr(SiO4)
Reference: Van Schmus,W.R.,(1980) Chronology of Igneous Rocks Associated with the Penokeon Orogeny In Wisconsin:Geological Society of America Special Paper 182,p.159-168

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
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Cummingtonite9.DE.05☐{Mg2}{Mg5}(Si8O22)(OH)2
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Titanite9.AG.15CaTi(SiO4)O
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Biotite'-
'Chlorite Group'-
'Hornblende'-
'K Feldspar'-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Rutile4.4.1.1TiO2
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Almandine51.4.3a.2Fe2+3Al2(SiO4)3
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Cummingtonite66.1.1.1☐{Mg2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Biotite'-
'Chlorite Group'-
'Hornblende'-
'K Feldspar'-

List of minerals for each chemical element

HHydrogen
H Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
OOxygen
O AlmandineFe32+Al2(SiO4)3
O Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O TitaniteCaTi(SiO4)O
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O ZirconZr(SiO4)
O RutileTiO2
MgMagnesium
Mg Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Al AlmandineFe32+Al2(SiO4)3
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si AlmandineFe32+Al2(SiO4)3
Si Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si TitaniteCaTi(SiO4)O
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si ZirconZr(SiO4)
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca TitaniteCaTi(SiO4)O
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
TiTitanium
Ti TitaniteCaTi(SiO4)O
Ti RutileTiO2
FeIron
Fe AlmandineFe32+Al2(SiO4)3
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
ZrZirconium
Zr ZirconZr(SiO4)

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Dott, R. H. & J. W. Attig (2004) Roadside Geology of Wisconsin: Mountain Press, 346 p.

Other Databases

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

External Links

Wisconsin Mineral index - Wisconsin Geological and Natural History Survey http://wgnhs.uwex.edu/wisconsin-geology/minerals-wisconsin/

Localities in this Region
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