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Bayfield Co., Wisconsin, USAi
Regional Level Types
Bayfield Co.County
WisconsinState
USACountry

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Locality type:
Largest Settlements:
PlacePopulation
Washburn2,055 (2017)
Iron River761 (2017)
Bayfield479 (2017)
Cable206 (2017)
Port Wing164 (2017)
Grand View163 (2017)
Other Languages:
French:
comté de Bayfield, Wisconsin, États-Unis
German:
Bayfield County, Wisconsin, Vereinigte Staaten
Italian:
contea di Bayfield, Wisconsin, Stati Uniti d'America
Russian:
Бэйфилд, Висконсин, Соединённые Штаты Америки
Simplified Chinese:
貝菲縣, 威斯康辛州, 美国
Spanish:
Condado de Bayfield, Wisconsin, Estados Unidos
Albanian:
Bayfield County, Wisconsin, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة بايفيلد, ويسكونسن, الولايات المتحدة
Basque:
Bayfield konderria, Wisconsin
Bavarian:
Bayfield County, Wisconsin, Vaoanigte Stootn
Bishnupriya Manipuri:
বেফিল্ড কাউন্টি, উইসকনসিন, তিলপারাষ্ট্র
Bulgarian:
Бейфийлд, Уисконсин, Съединени американски щати
Cebuano:
Bayfield County, Wisconsin
Dutch:
Bayfield County, Wisconsin, Verenigde Staten
Esperanto:
Kantono Bayfield, Viskonsino
Farsi/Persian:
شهرستان بیفیلد، ویسکانسین, ویسکانسین, ایالات متحده آمریکا
Finnish:
Bayfieldin piirikunta, Wisconsin, Yhdysvallat
Hungarian:
Bayfield megye, Wisconsin, Amerikai Egyesült Államok
Japanese:
ベイフィールド郡, ウィスコンシン州, アメリカ合衆国
Latin:
Bayfield Comitatus, Visconsinia, Civitates Foederatae Americae
Low Saxon/Low German:
Bayfield County, Wisconsin, USA
Min Dong Chinese:
Bayfield Gông, Wisconsin
Minnan / Hokkien-Taiwanese:
Bayfield Kūn
Norwegian:
Bayfield County, Wisconsin, USA
Polish:
Hrabstwo Bayfield, Wisconsin, Stany Zjednoczone
Portuguese:
Condado de Bayfield, Wisconsin, Estados Unidos
Romanian:
Comitatul Bayfield, Wisconsin, Statele Unite ale Americii
Sardinian:
contea de Bayfield, Wisconsin, Istados Unidos de Amèrica
Serbian:
Округ Бајфилд , Висконсин, Сједињене Америчке Државе
Serbo-Croatian:
Bayfield County, Wisconsin, Sjedinjene Američke Države
Swedish:
Bayfield County, Wisconsin, USA
Traditional Chinese:
貝菲縣, 威斯康辛州, 美國
Turkish:
Bayfield, Wisconsin, Amerika Birleşik Devletleri
Ukrainian:
Бейфілд, Вісконсин, Сполучені Штати Америки
Urdu:
بےفیلڈ کاؤنٹی، وسکونسن, وسکونسن, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Bayfield, Wisconsin, Chủng Quốc Hoa Kỳ
Waray:
Condado han Bayfield, Wisconsin, Estados Unidos


Bayfield County’s bedrock is dominated by a thick sequence of Precambrian rocks which occur in NE striking belts, with the oldest at the southern edge of the county. These oldest rocks in the section are poorly exposed Archean meta-volcanic and meta-sedimentary rocks. These are overlain by a thick section of Proterozoic sedimentary rocks, including the Bad River Dolomite,which was locally quarried as marble near Grandview. These are overlain by a thick section of 1.1 billion year old (Keweenawan) volcanic rocks. A few small native copper prospects occur in these rocks. These are intruded by the complexly differentiated Keweenawan–age plutons of the Mellen Complex. On top of these is a package of poorly-exposed Proterozoic sedimentary rocks (Oronto Group) which further filled the rift after the cessation of volcanism. The youngest bedrock, separated from the older rocks by another large thrust fault, the Douglas Fault, is the little metamorphosed Proterozoic Bayfield Group sandstones.The Bayfield Group is elegantly exposed on the Bayfield Peninsula, and the Apostle Islands. The Bayfield sandstones were formerly extensively quarried as building stone. The Apostle Islands are largely protected as a National Lakeshore. The islands are often fronted by wave-carved sandstone cliffs popular with tourists. They are most approachable in Big Bay State Park on Madeline Island.

Glacial drift and glacial lake sediments cover a lot of the county. The coarse tills and outwash can yield interesting minerals such as “drift” copper and Lake Superior agates.

The Northern Great Lakes Visitor Center located near Ashland near the junction of US highway 2 and Wisconsin Highway 13 is a great place to learn about this area's natural and human history.

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

15 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:

Albite
Formula: Na(AlSi3O8)
Reference: Cordura, W http://www.uwex.edu/wgnhs/Mineral%20Index/Minerals/plagioclase.htm
'Albite-Anorthite Series'
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Bornite
Formula: Cu5FeS4
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
Calcite
Formula: CaCO3
Chalcopyrite
Formula: CuFeS2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
'Chlorite Group'
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Reference: Cordura, W http://www.uwex.edu/wgnhs/Mineral%20Index/Minerals/plagioclase.htm
Copper
Formula: Cu
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Cordura, W http://www.uwex.edu/wgnhs/Mineral%20Index/Minerals/plagioclase.htm
'Fayalite-Forsterite Series'
Reference: Leighton, M. W. (1954) Petrogenesis of a gabbro - granophyre complex in northern Wisconsin" Geological Society of America Bulletin: 65: 401-442.
'Feldspar Group'
Reference: Leighton, M. W. (1954) Petrogenesis of a gabbro - granophyre complex in northern Wisconsin" Geological Society of America Bulletin: 65: 401-442.
'Feldspar Group var: Perthite'
Reference: Leighton, M. W. (1954) Petrogenesis of a gabbro - granophyre complex in northern Wisconsin" Geological Society of America Bulletin: 65: 401-442.
'Heulandite subgroup'
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
'Hypersthene'
Formula: (Mg,Fe)SiO3
Reference: Cordura, W http://www.uwex.edu/wgnhs/Mineral%20Index/Minerals/orthopyroxene.htm
'K Feldspar'
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
Malachite
Formula: Cu2(CO3)(OH)2
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Pectolite
Formula: NaCa2Si3O8(OH)
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
Prehnite
Formula: Ca2Al2Si3O10(OH)2
'Pumpellyite'
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
Quartz
Formula: SiO2
Localities: Reported from at least 7 localities in this region.
Quartz var: Agate
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
Quartz var: Chalcedony
Formula: SiO2
Quartz var: Jasper
Reference: Gems and Minerals of America - Jay Ellis Ransom-1974
Quartz var: Lake Superior Agate
Formula: SiO2
Reference: Brian Cowger
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Agate4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
var: Jasper4.DA.05SiO2
var: Lake Superior Agate4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Clinozoisite9.BG.05a{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Laumontite9.GB.10CaAl2Si4O12 · 4H2O
Natrolite9.GA.05Na2Al2Si3O10 · 2H2O
Pectolite9.DG.05NaCa2Si3O8(OH)
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Feldspar Group'-
'var: Perthite'-
'Heulandite subgroup'-
'Hypersthene'-(Mg,Fe)SiO3
'K Feldspar'-
'Pumpellyite'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
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)
Clinozoisite58.2.1a.4{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
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
Single-Width Unbranched Chains, W=1 with chains P=3
Pectolite65.2.1.4aNaCa2Si3O8(OH)
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 4-membered rings
Prehnite72.1.3.1Ca2Al2Si3O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Laumontite77.1.1.4CaAl2Si4O12 · 4H2O
Natrolite77.1.5.1Na2Al2Si3O10 · 2H2O
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Feldspar Group'-
'var: Perthite'-
'Heulandite subgroup'-
'Hypersthene'-(Mg,Fe)SiO3
'K Feldspar'-
'Pumpellyite'-
Quartz
var: Agate
-SiO2
var: Chalcedony-SiO2
var: Jasper-SiO2
var: Lake Superior Agate-SiO2

List of minerals for each chemical element

HHydrogen
H PrehniteCa2Al2Si3O10(OH)2
H PectoliteNaCa2Si3O8(OH)
H NatroliteNa2Al2Si3O10 · 2H2O
H Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H MalachiteCu2(CO3)(OH)2
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
H LaumontiteCaAl2Si4O12 · 4H2O
CCarbon
C MalachiteCu2(CO3)(OH)2
C CalciteCaCO3
OOxygen
O PrehniteCa2Al2Si3O10(OH)2
O PectoliteNaCa2Si3O8(OH)
O QuartzSiO2
O NatroliteNa2Al2Si3O10 · 2H2O
O Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
O AlbiteNa(AlSi3O8)
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Hypersthene(Mg,Fe)SiO3
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O MalachiteCu2(CO3)(OH)2
O CalciteCaCO3
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O LaumontiteCaAl2Si4O12 · 4H2O
O Quartz (var: Lake Superior Agate)SiO2
O Quartz (var: Chalcedony)SiO2
NaSodium
Na PectoliteNaCa2Si3O8(OH)
Na NatroliteNa2Al2Si3O10 · 2H2O
Na AlbiteNa(AlSi3O8)
MgMagnesium
Mg Hypersthene(Mg,Fe)SiO3
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Al PrehniteCa2Al2Si3O10(OH)2
Al NatroliteNa2Al2Si3O10 · 2H2O
Al Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Al AlbiteNa(AlSi3O8)
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al LaumontiteCaAl2Si4O12 · 4H2O
SiSilicon
Si PrehniteCa2Al2Si3O10(OH)2
Si PectoliteNaCa2Si3O8(OH)
Si QuartzSiO2
Si NatroliteNa2Al2Si3O10 · 2H2O
Si Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Si AlbiteNa(AlSi3O8)
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Hypersthene(Mg,Fe)SiO3
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si LaumontiteCaAl2Si4O12 · 4H2O
Si Quartz (var: Lake Superior Agate)SiO2
Si Quartz (var: Chalcedony)SiO2
SSulfur
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
CaCalcium
Ca PrehniteCa2Al2Si3O10(OH)2
Ca PectoliteNaCa2Si3O8(OH)
Ca Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca CalciteCaCO3
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Ca LaumontiteCaAl2Si4O12 · 4H2O
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Hypersthene(Mg,Fe)SiO3
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
CuCopper
Cu BorniteCu5FeS4
Cu MalachiteCu2(CO3)(OH)2
Cu ChalcopyriteCuFeS2
Cu CopperCu

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Cannon, W.F., L.G. Woodruff, S.W. Nicholson & C.A. Hedgman (1996) Bedrock geologic map of the Ashland and the northern part of the Ironwood 30' x 60' Quadrangles, Wisconsin and Michigan: U.S. Geological Survey, Miscellaneous Investigations Series: Map I-2566, 1 sheet.
Dott, R. H. Jr. & J.W. Attig (2004) Roadside Geology of Wisconsin, Mountain Press Publishing Company, 346 p.
Cannon, W. , G. LaBerge, J. Klasner & K. Schulz (2007) The Gogebic Iron Range - a sample of the northern margin of the Penokean fold and thrust belt: U. S. Geological Survey Professional Paper 1730, 44 p. plus map.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Bayfield_County,_Wisconsin
Wikidata ID:Q490482
GeoNames ID:5244967

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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