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

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PhotosMapsSearch
00728990014960919729728.jpg
Crandon deposit discovery site

Crandon massive sulfide deposit, Little Sand Lake, Ladysmith-Rhinelander Metavolcanic Complex, Forest County, Wisconsin, USA
08045650014949252353480.jpg
Quartz

McCaslin Mountain, Forest County, Wisconsin, USA
00728990014960919729728.jpg
Crandon deposit discovery site

Crandon massive sulfide deposit, Little Sand Lake, Ladysmith-Rhinelander Metavolcanic Complex, Forest County, Wisconsin, USA
08045650014949252353480.jpg
Quartz

McCaslin Mountain, Forest County, Wisconsin, USA
00728990014960919729728.jpg
Crandon deposit discovery site

Crandon massive sulfide deposit, Little Sand Lake, Ladysmith-Rhinelander Metavolcanic Complex, Forest County, Wisconsin, USA
08045650014949252353480.jpg
Quartz

McCaslin Mountain, Forest County, Wisconsin, USA
Neighbouring regions:
Langlade County, Wisconsin, USA
Marinette County, Wisconsin, USA
Oconto County, Wisconsin, USA
Oneida County, Wisconsin, USA
Florence County, Wisconsin, USA
Vilas County, Wisconsin, USA
Iron County, Michigan, USA
Type:
County
Largest Settlements:
PlacePopulation
Crandon1,863 (2017)
Nashville1,037 (2017)
Laona583 (2017)
Wabeno575 (2017)
Mole Lake435 (2017)
Hiles167 (2017)
Mindat Locality ID:
25694
Long-form identifier:
mindat:1:2:25694:9
GUID (UUID V4):
50819531-fec8-4d1a-bac6-a62fcae881f6
Other Languages:
View 31 more...
French:
comtΓ© de Forest, Wisconsin, Γ‰tats-Unis
German:
Forest County, Wisconsin, Vereinigte Staaten
Italian:
contea di Forest, Wisconsin, Stati Uniti d'America
Russian:
ЀорСст, Висконсин, Π‘ΠΎΠ΅Π΄ΠΈΠ½Ρ‘Π½Π½Ρ‹Π΅ Π¨Ρ‚Π°Ρ‚Ρ‹ АмСрики
Simplified Chinese:
福雷斯縣, ε¨ζ–―εΊ·θΎ›ε·ž, ηΎŽε›½
Spanish:
Condado de Forest, Wisconsin, Estados Unidos
Albanian:
Forest County, Wisconsin, Shtetet e Bashkuara tΓ« AmerikΓ«s
Arabic:
Ω…Ω‚Ψ§Ψ·ΨΉΨ© فورسΨͺ, ΩˆΩŠΨ³ΩƒΩˆΩ†Ψ³Ω†, Ψ§Ω„ΩˆΩ„Ψ§ΩŠΨ§Ψͺ Ψ§Ω„Ω…ΨͺΨ­Ψ―Ψ©
Basque:
Forest konderria , Wisconsin
Bavarian:
Forest County, Wisconsin, Vaoanigte Stootn
Bishnupriya Manipuri:
ΰ¦«ΰ¦°ΰ§‡ΰ¦Έΰ§ΰ¦Ÿ ΰ¦•ΰ¦Ύΰ¦‰ΰ¦¨ΰ§ΰ¦Ÿΰ¦Ώ, উইসকনসিন, ঀিলΰ¦ͺারাষ্ট্র
Bulgarian:
ЀорСст, Уисконсин, БъСдинСни амСрикански Ρ‰Π°Ρ‚ΠΈ
Cebuano:
Forest County, Wisconsin
Dutch:
Forest County, Wisconsin, Verenigde Staten
Esperanto:
Kantono Arbaro, Viskonsino
Estonian:
Foresti maakond, Wisconsin, Ameerika Ühendriigid
Farsi/Persian:
Ψ΄Ω‡Ψ±Ψ³ΨͺΨ§Ω† فارسΨͺ، ΩˆΫŒΨ³Ϊ©Ψ§Ω†Ψ³ΫŒΩ†, ΩˆΫŒΨ³Ϊ©Ψ§Ω†Ψ³ΫŒΩ†, Ψ§ΫŒΨ§Ω„Ψ§Ψͺ Ω…ΨͺΨ­Ψ―Ω‡ Ψ’Ω…Ψ±ΫŒΪ©Ψ§
Hungarian:
Forest megye, Wisconsin, Amerikai Egyesült Államok
Japanese:
γƒ•γ‚©γƒ¬γ‚Ήγƒˆιƒ‘, γ‚¦γ‚£γ‚Ήγ‚³γƒ³γ‚·γƒ³ε·ž, をパγƒͺγ‚«εˆθ‘†ε›½
Latin:
Forest Comitatus, Visconsinia, Civitates Foederatae Americae
Low Saxon/Low German:
Forest County, Wisconsin, USA
Min Dong Chinese:
Forest GΓ΄ng, Wisconsin
Minnan / Hokkien-Taiwanese:
Forest KΕ«n
Norwegian:
Forest County, Wisconsin, USA
Polish:
Hrabstwo Forest, Wisconsin, Stany Zjednoczone
Portuguese:
Condado de Forest, Wisconsin, Estados Unidos
Romanian:
Comitatul Forest, Wisconsin, Statele Unite ale Americii
Sardinian:
contea de Forest, Wisconsin, Istados Unidos de Amèrica
Serbian:
Forest County, Висконсин, БјСдињСнС АмСричкС Π”Ρ€ΠΆΠ°Π²Π΅
Serbo-Croatian:
Forest County, Wisconsin, Sjedinjene Američke Države
Swedish:
Forest County, Wisconsin, USA
Traditional Chinese:
福雷斯縣, ε¨ζ–―εΊ·θΎ›ε·ž, ηΎŽεœ‹
Turkish:
Forest, Wisconsin, Amerika Birleşik Devletleri
Ukrainian:
ЀорСст, Вісконсин, Π‘ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Ρ– Π¨Ρ‚Π°Ρ‚ΠΈ АмСрики
Urdu:
فارسٹ Ϊ©Ψ§Ψ€Ω†ΩΉΫŒΨŒ ΩˆΨ³Ϊ©ΩˆΩ†Ψ³Ω†, ΩˆΨ³Ϊ©ΩˆΩ†Ψ³Ω†, ریاسΨͺہائے Ω…Ψͺحدہ Ψ§Ω…Ψ±ΫŒΪ©Ψ§
Vietnamese:
QuαΊ­n Forest, Wisconsin, Chủng Quα»‘c Hoa Kα»³
Waray:
Condado han Forest, Wisconsin, Estados Unidos


Complex Precambrian rocks underlie Forest County, which are obscured by thick glacial drift, lakes, forests and marshes. Scattered outcrops and drill core reveal older gneissic terrane overlain by Lower Proterozoic meta-sedimentary and meta-volcanic rocks representing a sequence caught up between colliding continents and deformed during the 1.8 billion year old Penokean Orogeny. Several massive sulfide deposits are known in the county, including the world-class Crandon deposit. Their discovery is based almost solely on geophysical and drill core records - outcrops are sparse. In the southeastern corner of the County, cleaner quartzite of McCaslin Mountain are exposed in monadnocks. The extensive glacial drift in the County 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

30 valid minerals.

Rock Types Recorded

Note: 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:

β“˜ Arsenopyrite
Formula: FeAsS
β“˜ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
β“˜ Bornite
Formula: Cu5FeS4
β“˜ Calcite
Formula: CaCO3
β“˜ Chalcocite
Formula: Cu2S
β“˜ Chalcopyrite
Formula: CuFeS2
β“˜ 'Chlorite Group'
β“˜ Clinozoisite
Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
β“˜ Copper
Formula: Cu
β“˜ Covellite
Formula: CuS
β“˜ Digenite
Formula: Cu9S5
β“˜ Dolomite
Formula: CaMg(CO3)2
β“˜ Enargite
Formula: Cu3AsS4
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜ 'Fayalite-Forsterite Series'
β“˜ Fluorite
Formula: CaF2
β“˜ Galena
Formula: PbS
β“˜ Goethite
Formula: Ξ±-Fe3+O(OH)
β“˜ Gold
Formula: Au
β“˜ Gold var. Electrum
Formula: (Au,Ag)
β“˜ Graphite
Formula: C
β“˜ Hematite
Formula: Fe2O3
β“˜ 'Iddingsite'
Formula: MgO · Fe2O3 · 3SiO2 · 4H2O
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
β“˜ Marcasite
Formula: FeS2
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Pearceite ?
Formula: [Ag6As2S7][Ag9CuS4]
β“˜ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
β“˜ Polybasite ?
Formula: [Ag6Sb2S7][Ag9CuS4]
β“˜ Pyrite
Formula: FeS2
β“˜ Pyrrhotite
Formula: Fe1-xS
β“˜ Quartz
Formula: SiO2
β“˜ Silver
Formula: Ag
β“˜ Sphalerite
Formula: ZnS
β“˜ Stephanite
Formula: Ag5SbS4
Description: Inclusions in galena
β“˜ 'Tennantite Subgroup' ?
Formula: Cu6(Cu4C2+2)As4S12S
β“˜ 'Tetrahedrite Subgroup' ?
Formula: Cu6(Cu4C2+2)Sb4S12S

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Silver1.AA.05Ag
β“˜Copper1.AA.05Cu
β“˜Gold
var. Electrum		1.AA.05(Au,Ag)
β“˜1.AA.05Au
β“˜Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
β“˜Chalcocite2.BA.05Cu2S
β“˜Digenite2.BA.10Cu9S5
β“˜Bornite2.BA.15Cu5FeS4
β“˜Covellite2.CA.05aCuS
β“˜Sphalerite2.CB.05aZnS
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Pyrrhotite2.CC.10Fe1-xS
β“˜Galena2.CD.10PbS
β“˜Pyrite2.EB.05aFeS2
β“˜Marcasite2.EB.10aFeS2
β“˜Arsenopyrite2.EB.20FeAsS
β“˜'Tetrahedrite Subgroup' ?2.GB.05Cu6(Cu4C2+2)Sb4S12S
β“˜'Tennantite Subgroup' ?2.GB.05Cu6(Cu4C2+2)As4S12S
β“˜Stephanite2.GB.10Ag5SbS4
β“˜Pearceite ?2.GB.15[Ag6As2S7][Ag9CuS4]
β“˜Polybasite ?2.GB.15[Ag6Sb2S7][Ag9CuS4]
β“˜Enargite2.KA.05Cu3AsS4
Group 3 - Halides
β“˜Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
β“˜Goethite4.00.Ξ±-Fe3+O(OH)
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Dolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
β“˜Clinozoisite9.BG.05a(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
β“˜'Chlorite Group'-
β“˜'Iddingsite'-MgO Β· Fe2O3 Β· 3SiO2 Β· 4H2O
β“˜'Fayalite-Forsterite Series'-
β“˜'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8

List of minerals for each chemical element

HHydrogen
Hβ“˜ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ GoethiteΞ±-Fe3+O(OH)
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ IddingsiteMgO · Fe2O3 · 3SiO2 · 4H2O
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ DolomiteCaMg(CO3)2
Cβ“˜ GraphiteC
OOxygen
Oβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oβ“˜ CalciteCaCO3
Oβ“˜ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Oβ“˜ DolomiteCaMg(CO3)2
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ GoethiteΞ±-Fe3+O(OH)
Oβ“˜ HematiteFe2O3
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ IddingsiteMgO · Fe2O3 · 3SiO2 · 4H2O
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
FFluorine
Fβ“˜ FluoriteCaF2
NaSodium
Naβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgβ“˜ DolomiteCaMg(CO3)2
Mgβ“˜ IddingsiteMgO · Fe2O3 · 3SiO2 · 4H2O
AlAluminium
Alβ“˜ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Alβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siβ“˜ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ IddingsiteMgO · Fe2O3 · 3SiO2 · 4H2O
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SSulfur
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ BorniteCu5FeS4
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ ChalcociteCu2S
Sβ“˜ CovelliteCuS
Sβ“˜ DigeniteCu9S5
Sβ“˜ EnargiteCu3AsS4
Sβ“˜ GalenaPbS
Sβ“˜ MarcasiteFeS2
Sβ“˜ Pearceite[Ag6As2S7][Ag9CuS4]
Sβ“˜ Polybasite[Ag6Sb2S7][Ag9CuS4]
Sβ“˜ PyriteFeS2
Sβ“˜ PyrrhotiteFe1-xS
Sβ“˜ SphaleriteZnS
Sβ“˜ StephaniteAg5SbS4
Sβ“˜ Tennantite SubgroupCu6(Cu4C22+)As4S12S
Sβ“˜ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
KPotassium
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caβ“˜ CalciteCaCO3
Caβ“˜ Clinozoisite(CaCa)(AlAlAl)O[Si2O7][SiO4](OH)
Caβ“˜ DolomiteCaMg(CO3)2
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caβ“˜ FluoriteCaF2
Caβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
FeIron
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feβ“˜ BorniteCu5FeS4
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ GoethiteΞ±-Fe3+O(OH)
Feβ“˜ HematiteFe2O3
Feβ“˜ MagnetiteFe2+Fe23+O4
Feβ“˜ MarcasiteFeS2
Feβ“˜ PyriteFeS2
Feβ“˜ PyrrhotiteFe1-xS
Feβ“˜ IddingsiteMgO · Fe2O3 · 3SiO2 · 4H2O
CuCopper
Cuβ“˜ BorniteCu5FeS4
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ ChalcociteCu2S
Cuβ“˜ CovelliteCuS
Cuβ“˜ CopperCu
Cuβ“˜ DigeniteCu9S5
Cuβ“˜ EnargiteCu3AsS4
Cuβ“˜ Pearceite[Ag6As2S7][Ag9CuS4]
Cuβ“˜ Polybasite[Ag6Sb2S7][Ag9CuS4]
Cuβ“˜ Tennantite SubgroupCu6(Cu4C22+)As4S12S
Cuβ“˜ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
ZnZinc
Znβ“˜ SphaleriteZnS
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
Asβ“˜ EnargiteCu3AsS4
Asβ“˜ Pearceite[Ag6As2S7][Ag9CuS4]
Asβ“˜ Tennantite SubgroupCu6(Cu4C22+)As4S12S
AgSilver
Agβ“˜ Gold var. Electrum(Au,Ag)
Agβ“˜ Pearceite[Ag6As2S7][Ag9CuS4]
Agβ“˜ Polybasite[Ag6Sb2S7][Ag9CuS4]
Agβ“˜ SilverAg
Agβ“˜ StephaniteAg5SbS4
SbAntimony
Sbβ“˜ Polybasite[Ag6Sb2S7][Ag9CuS4]
Sbβ“˜ StephaniteAg5SbS4
Sbβ“˜ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
AuGold
Auβ“˜ Gold var. Electrum(Au,Ag)
Auβ“˜ GoldAu
PbLead
Pbβ“˜ GalenaPbS

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/Forest_County,_Wisconsin
Wikidata ID:Q502086
GeoNames ID:5253400

Localities in this Region

USA

Other Regions, Features and Areas that Intersect

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

Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 399.
(n.d.)
LaBerge, G. L. (1994) Geology of the Lake Superior Region: Geoscience Press, 313 p.
Dott, Robert H. & J.W. Attig, (2004) Roadside Geology of Wisconsin, Mountain Press, 345 p.
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