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Bayfield County, Wisconsin, USAi
Regional Level Types
Bayfield CountyCounty
WisconsinState
USACountry

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PhotosMapsSearchMineralogy
01258640017272055859732.jpg
Grandville Marble Quarry

Grandview marble quarry, Bayfield County, Wisconsin, USA
04056740017272055854000.jpg
Bayfield quarry

Bayview Sandstone Quarry, Bayfield County, Wisconsin, USA
07148890017272055859811.jpg
Marble, etc.

Grandview marble quarry, Bayfield County, Wisconsin, USA
01258640017272055859732.jpg
Grandville Marble Quarry

Grandview marble quarry, Bayfield County, Wisconsin, USA
04056740017272055854000.jpg
Bayfield quarry

Bayview Sandstone Quarry, Bayfield County, Wisconsin, USA
07148890017272055859811.jpg
Marble, etc.

Grandview marble quarry, Bayfield County, Wisconsin, USA
01258640017272055859732.jpg
Grandville Marble Quarry

Grandview marble quarry, Bayfield County, Wisconsin, USA
04056740017272055854000.jpg
Bayfield quarry

Bayview Sandstone Quarry, Bayfield County, Wisconsin, USA
Neighbouring regions:
Douglas County, Wisconsin, USA
Ashland County, Wisconsin, USA
Sawyer County, Wisconsin, USA
Washburn County, Wisconsin, USA
Type:
County
Largest Settlements:
PlacePopulation
Washburn2,055 (2017)
Iron River761 (2017)
Bayfield479 (2017)
Cable206 (2017)
Port Wing164 (2017)
Grand View163 (2017)
Mindat Locality ID:
25698
Long-form identifier:
mindat:1:2:25698:5
GUID (UUID V4):
0
Other Languages:
View 31 more...
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 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

15 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:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Calcite
Formula: CaCO3
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Clinozoisite
Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ 'Fayalite-Forsterite Series'
ⓘ 'Feldspar Group'
ⓘ 'Feldspar Group var. Perthite'
ⓘ 'Heulandite Subgroup'
Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
ⓘ 'Hypersthene'
Formula: (Mg,Fe)SiO3
ⓘ 'K Feldspar'
ⓘ Laumontite
Formula: CaAl2Si4O12 · 4H2O
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Native Copper
Formula: Cu
ⓘ Natrolite
Formula: Na2Al2Si3O10 · 2H2O
ⓘ Pectolite
Formula: NaCa2Si3O8(OH)
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Prehnite
Formula: Ca2Al2Si3O10(OH)2
ⓘ 'Pumpellyite Subgroup'
Formula: Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
ⓘ Quartz
Formula: SiO2
Localities: Reported from at least 7 localities in this region.
ⓘ Quartz var. Agate
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ Quartz var. Lake Superior Agate
Formula: SiO2
References:
Brian Cowger
ⓘ Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
ⓘBornite2.BA.15Cu5FeS4
ⓘChalcopyrite2.CB.10aCuFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz
var. Agate		4.DA.05SiO2
ⓘvar. Chalcedony4.DA.05SiO2
ⓘ4.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
ⓘClinozoisite9.BG.05a(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘTremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
ⓘPectolite9.DG.05NaCa2Si3O8(OH)
ⓘPrehnite9.DP.20Ca2Al2Si3O10(OH)2
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘNatrolite9.GA.05Na2Al2Si3O10 · 2H2O
ⓘLaumontite9.GB.10CaAl2Si4O12 · 4H2O
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Feldspar Group'-
ⓘ'Heulandite Subgroup'-(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
ⓘ'Hypersthene'-(Mg,Fe)SiO3
ⓘ'Pumpellyite Subgroup'-Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
ⓘ'Feldspar Group
var. Perthite'		-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'K Feldspar'-

List of minerals for each chemical element

HHydrogen
Hⓘ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Hⓘ LaumontiteCaAl2Si4O12 · 4H2O
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ NatroliteNa2Al2Si3O10 · 2H2O
Hⓘ PectoliteNaCa2Si3O8(OH)
Hⓘ PrehniteCa2Al2Si3O10(OH)2
Hⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Hⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
CCarbon
Cⓘ CalciteCaCO3
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ Quartz var. AgateSiO2
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ CalciteCaCO3
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Oⓘ Hypersthene(Mg,Fe)SiO3
Oⓘ LaumontiteCaAl2Si4O12 · 4H2O
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ NatroliteNa2Al2Si3O10 · 2H2O
Oⓘ PectoliteNaCa2Si3O8(OH)
Oⓘ PrehniteCa2Al2Si3O10(OH)2
Oⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Oⓘ QuartzSiO2
Oⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Oⓘ Fayalite-Forsterite Series
Oⓘ Quartz var. Lake Superior AgateSiO2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Naⓘ NatroliteNa2Al2Si3O10 · 2H2O
Naⓘ PectoliteNaCa2Si3O8(OH)
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ Hypersthene(Mg,Fe)SiO3
Mgⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Alⓘ LaumontiteCaAl2Si4O12 · 4H2O
Alⓘ NatroliteNa2Al2Si3O10 · 2H2O
Alⓘ PrehniteCa2Al2Si3O10(OH)2
Alⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ Quartz var. AgateSiO2
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Siⓘ Hypersthene(Mg,Fe)SiO3
Siⓘ LaumontiteCaAl2Si4O12 · 4H2O
Siⓘ NatroliteNa2Al2Si3O10 · 2H2O
Siⓘ PectoliteNaCa2Si3O8(OH)
Siⓘ PrehniteCa2Al2Si3O10(OH)2
Siⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Siⓘ QuartzSiO2
Siⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Siⓘ Fayalite-Forsterite Series
Siⓘ Quartz var. Lake Superior AgateSiO2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SSulfur
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
KPotassium
Kⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
CaCalcium
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ CalciteCaCO3
Caⓘ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ Heulandite Subgroup(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Caⓘ LaumontiteCaAl2Si4O12 · 4H2O
Caⓘ PectoliteNaCa2Si3O8(OH)
Caⓘ PrehniteCa2Al2Si3O10(OH)2
Caⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Caⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
FeIron
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ Hypersthene(Mg,Fe)SiO3
Feⓘ Fayalite-Forsterite Series
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ Native CopperCu
Cuⓘ MalachiteCu2(CO3)(OH)2

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

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

Localities in this Region

USA
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.

References

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.
wgnhs.uwex.edu (n.d.) http://wgnhs.uwex.edu/wisconsin-geology/minerals-wisconsin/
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