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

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Key
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Locality type:
Largest Settlements:
PlacePopulation
Neillsville2,409 (2017)
Colby1,828 (2017)
Thorp1,624 (2017)
Loyal1,239 (2017)
Greenwood1,013 (2017)
Owen930 (2017)
Other Languages:
French:
comté de Clark, Wisconsin, États-Unis
German:
Clark County, Wisconsin, Vereinigte Staaten
Italian:
contea di Clark, Wisconsin, Stati Uniti d'America
Russian:
Кларк, Висконсин, Соединённые Штаты Америки
Simplified Chinese:
克拉克縣, 威斯康辛州, 美国
Spanish:
Condado de Clark, Wisconsin, Estados Unidos
Albanian:
Clark County, Wisconsin, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة كلارك, ويسكونسن, الولايات المتحدة
Basque:
Clark konderria , Wisconsin
Bavarian:
Clark County, Wisconsin, Vaoanigte Stootn
Bishnupriya Manipuri:
ক্লার্ক কাউন্টি, উইসকনসিন, তিলপারাষ্ট্র
Bulgarian:
Кларк, Уисконсин, Съединени американски щати
Cebuano:
Clark County, Wisconsin
Dutch:
Clark County, Wisconsin, Verenigde Staten
Esperanto:
Kantono Clark, Viskonsino
Farsi/Persian:
شهرستان کلارک، ویسکانسین, ویسکانسین, ایالات متحده آمریکا
Hungarian:
Clark megye, Wisconsin, Amerikai Egyesült Államok
Japanese:
クラーク郡, ウィスコンシン州, アメリカ合衆国
Latin:
Clark Comitatus, Visconsinia, Civitates Foederatae Americae
Low Saxon/Low German:
Clark County, Wisconsin, USA
Min Dong Chinese:
Clark Gông, Wisconsin
Minnan / Hokkien-Taiwanese:
Clark Kūn
Norwegian:
Clark County, Wisconsin, USA
Polish:
Hrabstwo Clark, Wisconsin, Stany Zjednoczone
Portuguese:
Condado de Clark, Wisconsin, Estados Unidos
Romanian:
Comitatul Clark, Wisconsin, Statele Unite ale Americii
Sardinian:
contea de Clark, Wisconsin, Istados Unidos de Amèrica
Serbian:
Clark County, Висконсин, Сједињене Америчке Државе
Serbo-Croatian:
Clark County, Wisconsin, Sjedinjene Američke Države
Swedish:
Clark County, Wisconsin, USA
Traditional Chinese:
克拉克縣, 威斯康辛州, 美國
Turkish:
Clark, Wisconsin, Amerika Birleşik Devletleri
Ukrainian:
Кларк, Вісконсин, Сполучені Штати Америки
Urdu:
کلارک کاؤنٹی، وسکونسن, وسکونسن, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Clark, Wisconsin, Chủng Quốc Hoa Kỳ
Waray:
Condado han Clark, Wisconsin, Estados Unidos


Clark County is underlain by Cambrian sedimentary rocks, dominantly quartz sandstone, with complex Precambrian rocks exposed along deeper river drainages, particularly the Black River. The Precambrian rocks contain some of the oldest rocks in the state, dating from the Archean. These include gneisses and amphibolites severely deformed by the 1.8 billion year old Penokean Orogeny, a continent - continent collision. These are intruded by various pre- ,syn- and post-tectonic granitic rocks. The Precambrian rocks are frequently quarried for crushed stone. Some of the Cambrian quartz sandstone has potential as "frac sand". Some of the more fissile Cambrian sedimentary rocks are useful as flagstone. Glacial drift cover is relatively thin, but outwash gravel from Pleistocene meltwater can yield some interesting rocks from glacial drift such as 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

18 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:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
'Albite-Anorthite Series'
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Goldich,S.S.,Nier,A.O.,Baadsgaard,H,Hoffman,J.H.,and Krueger,H.W.,(1961) The Precambrain geology and geochronology of Minnesota:Minnesota Geological Survey Bulletion 41,p.1-193
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Calcite
Formula: CaCO3
Reference: axton, S. & Cordua, W. (2007) The Precambrian geology of the Opelt Quarry, Neillsville, WI: 53rd Institute on Lake Superior Geology Proceedings: 53 (1): 68-69.
'Chlorite Group'
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
Chromite
Formula: Fe2+Cr3+2O4
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Copper
Formula: Cu
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
'Fayalite-Forsterite Series'
Description: Composition of Olivine (Fa25).
Reference: Merrill, G.P. (1925) Notes on the Meteoric Stone of Colby, Wisconsin. Proceedings of the United States National Museum Vol. 67, Article 2, pp. 1-3. US Government Printing Office: Washington, DC; Mason, B. (1963) Olivine in ordinary chondrites. Geochimica et Cosmochimica Acta 27(9): 1011-1023. (Sept. 2013).; Keil, K. & Fredriksson, K. (1964) The Fe.Mg and Ca Distribution in Coexisting Olivines and Rhombic Pyroxenes of Chondrites. Journal of Geophysical Research Atmospheres 69 (16): 3487-3515. (August 1964).
'Hornblende'
Iron
Formula: Fe
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.; Willis, J. & Goldstein, J. I. (1983) A three-dimensional study of metal grains in equilibrated, ordinary chondrites. Journal of Geophysical Research, Supplement, vol. 88: B287-B292. (Nov. 1983).
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.; Willis, J. & Goldstein, J. I. (1983) A three-dimensional study of metal grains in equilibrated, ordinary chondrites. Journal of Geophysical Research, Supplement, vol. 88: B287-B292. (Nov. 1983).
Isocubanite
Formula: CuFe2S3
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'K Feldspar'
Mackinawite
Formula: (Fe,Ni)9S8
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'Maskelynite'
Reference: Merrill, G.P. (1925) Notes on the Meteoric Stone of Colby, Wisconsin. Proceedings of the United States National Museum Vol. 67, Article 2, pp. 1-3. US Government Printing Office: Washington, DC
Merrillite
Formula: Ca9NaMg(PO4)7
Reference: Merrill, G.P. (1925) Notes on the Meteoric Stone of Colby, Wisconsin. Proceedings of the United States National Museum Vol. 67, Article 2, pp. 1-3. US Government Printing Office: Washington, DC; Crozaz G. & Zinner, E. (1985) Ion probe determinations of rare earths in individual meteoritic phosphate grains: Earth and Planetary Science Letters 73: 41-52.
Microcline
Formula: K(AlSi3O8)
Reference: Goldich,S.S.,Nier,A.O.,Baadsgaard,H,Hoffman,J.H.,and Krueger,H.W.,(1961) The Precambrain geology and geochronology of Minnesota:Minnesota Geological Survey Bulletion 41,p.1-193
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Goldich,S.S.,Nier,A.O.,Baadsgaard,H,Hoffman,J.H.,and Krueger,H.W.,(1961) The Precambrain geology and geochronology of Minnesota:Minnesota Geological Survey Bulletion 41,p.1-193
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Goldich,S.S.,Nier,A.O.,Baadsgaard,H,Hoffman,J.H.,and Krueger,H.W.,(1961) The Precambrain geology and geochronology of Minnesota:Minnesota Geological Survey Bulletion 41,p.1-193
'Orthopyroxene Subgroup'
Reference: Merrill, G.P. (1925) Notes on the Meteoric Stone of Colby, Wisconsin. Proceedings of the United States National Museum Vol. 67, Article 2, pp. 1-3. US Government Printing Office: Washington, DC; Keil, K. & Fredriksson, K. (1964) The Fe.Mg and Ca Distribution in Coexisting Olivines and Rhombic Pyroxenes of Chondrites. Journal of Geophysical Research Atmospheres 69 (16): 3487-3515. (August 1964).
'Plessite'
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.; Willis, J. & Goldstein, J. I. (1983) A three-dimensional study of metal grains in equilibrated, ordinary chondrites. Journal of Geophysical Research, Supplement, vol. 88: B287-B292. (Nov. 1983).
Pyrite
Formula: FeS2
Quartz
Formula: SiO2
Quartz var: Agate
Reference: Gems and Minerals of America - Jay Ellis Ransom-1974
Quartz var: Chalcedony
Formula: SiO2
Reference: Gems and Minerals of America - Jay Ellis Ransom-1974
Quartz var: Jasper
Reference: Gems and Minerals of America - Jay Ellis Ransom-1974
Taenite
Formula: (Fe,Ni)
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.; Willis, J. & Goldstein, J. I. (1983) A three-dimensional study of metal grains in equilibrated, ordinary chondrites. Journal of Geophysical Research, Supplement, vol. 88: B287-B292. (Nov. 1983).
Tetrataenite
Formula: FeNi
Reference: Willis, J. & Goldstein, J. I. (1983) A three-dimensional study of metal grains in equilibrated, ordinary chondrites. Journal of Geophysical Research, Supplement, vol. 88: B287-B292. (Nov. 1983).
Titanite
Formula: CaTi(SiO4)O
Reference: axton, S. & Cordua, W. (2007) The Precambrian geology of the Opelt Quarry, Neillsville, WI: 53rd Institute on Lake Superior Geology Proceedings: 53 (1): 68-69.
Troilite
Formula: FeS
Reference: Merrill, G.P. (1925) Notes on the Meteoric Stone of Colby, Wisconsin. Proceedings of the United States National Museum Vol. 67, Article 2, pp. 1-3. US Government Printing Office: Washington, DC; Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.; Willis, J. & Goldstein, J. I. (1983) A three-dimensional study of metal grains in equilibrated, ordinary chondrites. Journal of Geophysical Research, Supplement, vol. 88: B287-B292. (Nov. 1983).
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 1 - Elements
Copper1.AA.05Cu
Iron1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Taenite1.AE.10(Fe,Ni)
Tetrataenite1.AE.10FeNi
Group 2 - Sulphides and Sulfosalts
Isocubanite2.CB.55bCuFe2S3
Mackinawite2.CC.25(Fe,Ni)9S8
Pyrite2.EB.05aFeS2
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Quartz4.DA.05SiO2
var: Agate4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
var: Jasper4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
Merrillite8.AC.45Ca9NaMg(PO4)7
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Titanite9.AG.15CaTi(SiO4)O
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Hornblende'-
'K Feldspar'-
'Maskelynite'-
'Orthopyroxene Subgroup'-
'Plessite'-

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
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Taenite1.1.11.2(Fe,Ni)
Tetrataenite1.1.11.3FeNi
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 9:8
Mackinawite2.7.2.1(Fe,Ni)9S8
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
AmBnXp, with (m+n):p = 1:1
Isocubanite2.9.13.3CuFe2S3
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
(AB)3(XO4)2
Merrillite38.3.4.4Ca9NaMg(PO4)7
Group 51 - NESOSILICATES Insular SiO4 Groups Only
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 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
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Albite-Anorthite Series'-
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Fayalite-Forsterite Series'-
'Hornblende'-
Iron-Fe
'K Feldspar'-
'Maskelynite'-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
'Orthopyroxene Subgroup'-
'Plessite'-
Quartz
var: Agate
-SiO2
var: Chalcedony-SiO2
var: Jasper-SiO2

List of minerals for each chemical element

HHydrogen
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H ApatiteCa5(PO4)3(Cl/F/OH)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
C CalciteCaCO3
OOxygen
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O QuartzSiO2
O TitaniteCaTi(SiO4)O
O CalciteCaCO3
O ApatiteCa5(PO4)3(Cl/F/OH)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O MicroclineK(AlSi3O8)
O ZirconZr(SiO4)
O MerrilliteCa9NaMg(PO4)7
O ChromiteFe2+Cr23+O4
O MuscoviteKAl2(AlSi3O10)(OH)2
O Quartz (var: Chalcedony)SiO2
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Na MerrilliteCa9NaMg(PO4)7
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Mg MerrilliteCa9NaMg(PO4)7
AlAluminium
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si QuartzSiO2
Si TitaniteCaTi(SiO4)O
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si MicroclineK(AlSi3O8)
Si ZirconZr(SiO4)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Quartz (var: Chalcedony)SiO2
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
P MerrilliteCa9NaMg(PO4)7
SSulfur
S PyriteFeS2
S TroiliteFeS
S IsocubaniteCuFe2S3
S Mackinawite(Fe,Ni)9S8
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca TitaniteCaTi(SiO4)O
Ca CalciteCaCO3
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca MerrilliteCa9NaMg(PO4)7
TiTitanium
Ti TitaniteCaTi(SiO4)O
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe PyriteFeS2
Fe TroiliteFeS
Fe ChromiteFe2+Cr23+O4
Fe IsocubaniteCuFe2S3
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Mackinawite(Fe,Ni)9S8
Fe Taenite(Fe,Ni)
Fe TetrataeniteFeNi
Fe IronFe
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Mackinawite(Fe,Ni)9S8
Ni Taenite(Fe,Ni)
Ni TetrataeniteFeNi
CuCopper
Cu CopperCu
Cu IsocubaniteCuFe2S3
ZrZirconium
Zr ZirconZr(SiO4)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Brown, B. (1988) Bedrock geology of Wisconsin- west central sheet: Wisconsin Geological and Natural History Survey, Map M104, 1 sheet.
Dott, Robert H. & J.W. Attig, (2004) Roadside Geology of Wisconsin, Mountain Press, 345 p.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Clark_County,_Wisconsin
Wikidata ID:Q494958
GeoNames ID:5248812

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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