Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

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

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Locality type:
Largest Settlements:
PlacePopulation
Amery2,834 (2017)
Osceola2,511 (2017)
Saint Croix Falls2,133 (2017)
Frederic1,105 (2017)
Luck1,071 (2017)
Clear Lake1,040 (2017)
Other Languages:
French:
comté de Polk, Wisconsin, États-Unis
German:
Polk County, Wisconsin, Vereinigte Staaten
Italian:
contea di Polk, Wisconsin, Stati Uniti d'America
Russian:
Полк, Висконсин, Соединённые Штаты Америки
Simplified Chinese:
波爾克縣, 威斯康辛州, 美国
Spanish:
Condado de Polk, Wisconsin, Estados Unidos
Albanian:
Polk County, Wisconsin, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة بولك, ويسكونسن, الولايات المتحدة
Basque:
Polk konderria , Wisconsin
Bavarian:
Polk County, Wisconsin, Vaoanigte Stootn
Bishnupriya Manipuri:
পোল্ক কাউন্টি, উইসকনসিন, তিলপারাষ্ট্র
Bulgarian:
Полк, Уисконсин, Съединени американски щати
Cebuano:
Polk County , Wisconsin
Dutch:
Polk County, Wisconsin, Verenigde Staten
Farsi/Persian:
شهرستان پولک، ویسکانسین, ویسکانسین, ایالات متحده آمریکا
Hungarian:
Polk megye, Wisconsin, Amerikai Egyesült Államok
Japanese:
ポーク郡, ウィスコンシン州, アメリカ合衆国
Latin:
Polk Comitatus, Visconsinia, Civitates Foederatae Americae
Low Saxon/Low German:
Polk County, Wisconsin, USA
Min Dong Chinese:
Polk Gông, Wisconsin
Minnan / Hokkien-Taiwanese:
Polk Kūn
Norwegian:
Polk County, Wisconsin, USA
Polish:
Hrabstwo Polk, Wisconsin, Stany Zjednoczone
Portuguese:
Condado de Polk, Wisconsin, Estados Unidos
Romanian:
Comitatul Polk, Wisconsin, Statele Unite ale Americii
Sardinian:
contea de Polk, Wisconsin, Istados Unidos de Amèrica
Serbian:
Polk County, Висконсин, Сједињене Америчке Државе
Serbo-Croatian:
Polk County, Wisconsin, Sjedinjene Američke Države
Swedish:
Polk County, Wisconsin, USA
Turkish:
Polk, Wisconsin, Amerika Birleşik Devletleri
Ukrainian:
Полк, Вісконсин, Сполучені Штати Америки
Urdu:
پوک کاؤنٹی، وسکونسن, وسکونسن, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Polk, Wisconsin, Chủng Quốc Hoa Kỳ
Waray:
Condado han Polk, Wisconsin, Estados Unidos


Polk County includes the southernmost exposures of the volcanic rock of the 1.1 billion year old Midcontinent Rift. These are masked to the south and west end of the county by Cambrian sandstones and Early Ordovician carbonate rocks. They are well exposed from Dresser north to St. Croix Falls. They are particularly visible in Interstate Park along the Dells of the St. Croix River and numerous hiking trails in the park. Outcrops in the park allow reconstruction of a chain of volcanic highlands progressively covered by the advancing Cambrian sea. Basalt outcrops are also sporadically exposed outside the park from Dresser north to the county line. Minor native copper was produced from the rocks, which are have been subjected to the greenschist facies during burial metamorphism. Epidote, chlorite, adularia and quartz are common amygdule fillings, vein minerals and groundmass replacements. The basalts are quarried at Dresser, which supplies crushed stone, rip rap and other materials. Thick glacial drift covers much of the county, and can yield interesting materials such as float copper, jasper and "Lake Superior" agates to the determined collector. The Ice Age Trail traverses the county, with its western termination in Interstate Park. Interstate Park has excellent displays in its Visitor Center on Ice Age geology. The public library and historical museum in Luck, Wisconsin also features fine geology displays, with artwork illustrating the geological history of the region.

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. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
'Albite-Anorthite Series'
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Bornite
Formula: Cu5FeS4
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Calcite
Formula: CaCO3
Chalcocite
Formula: Cu2S
Chalcopyrite
Formula: CuFeS2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
'Chlorite Group'
Chrysotile
Formula: Mg3(Si2O5)(OH)4
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Reference: William S. Cordua collection
Copper
Formula: Cu
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Cuprite
Formula: Cu2O
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Hematite
Formula: Fe2O3
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Ilmenite
Formula: Fe2+TiO3
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
'K Feldspar'
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Malachite
Formula: Cu2(CO3)(OH)2
Quartz
Formula: SiO2
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399
Zoisite
Formula: Ca2Al3[Si2O7][SiO4]O(OH)
Reference: Cordua, W. (1998) Minerals of Wisconsin: Rocks and Minerals: 73 (6): 378 - 399

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Chrysotile9.ED.15Mg3(Si2O5)(OH)4
Clinozoisite9.BG.05a{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Zoisite9.BG.10Ca2Al3[Si2O7][SiO4]O(OH)
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Chlorite Group'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8

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 = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
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)
Zoisite58.2.1b.1Ca2Al3[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
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Chrysotile71.1.5.1Mg3(Si2O5)(OH)4
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Albite-Anorthite Series'-
'Chlorite Group'-
'K Feldspar'-
'var: Adularia'-KAlSi3O8

List of minerals for each chemical element

HHydrogen
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H MalachiteCu2(CO3)(OH)2
H ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H ChrysotileMg3(Si2O5)(OH)4
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
H Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
CCarbon
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
OOxygen
O CalciteCaCO3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O CupriteCu2O
O MalachiteCu2(CO3)(OH)2
O QuartzSiO2
O ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O ChrysotileMg3(Si2O5)(OH)4
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O HematiteFe2O3
O IlmeniteFe2+TiO3
O MagnetiteFe2+Fe23+O4
O K Feldspar (var: Adularia)KAlSi3O8
O Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg ChrysotileMg3(Si2O5)(OH)4
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
Al K Feldspar (var: Adularia)KAlSi3O8
Al Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
SiSilicon
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si QuartzSiO2
Si ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si ChrysotileMg3(Si2O5)(OH)4
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si K Feldspar (var: Adularia)KAlSi3O8
Si Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
SSulfur
S BorniteCu5FeS4
S ChalcociteCu2S
S ChalcopyriteCuFeS2
KPotassium
K K Feldspar (var: Adularia)KAlSi3O8
CaCalcium
Ca CalciteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca ZoisiteCa2Al3[Si2O7][SiO4]O(OH)
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca Clinozoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
TiTitanium
Ti IlmeniteFe2+TiO3
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe HematiteFe2O3
Fe IlmeniteFe2+TiO3
Fe MagnetiteFe2+Fe23+O4
CuCopper
Cu CupriteCu2O
Cu MalachiteCu2(CO3)(OH)2
Cu BorniteCu5FeS4
Cu ChalcociteCu2S
Cu ChalcopyriteCuFeS2
Cu CopperCu

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Wirth, K., J. Vervoort & Z. Naiman (1997) The Chengwatana Volcanics, Wisconsin and Minnesota: petrogenesis of the southernmost volcanic rocks exposed in the Midcontinent rift: Canadian Journal of Earth Sciences: 34: 536-548.
Wirth, K, W.S. Cordua, W. Keen, M Middleton & Z. Naiman (1998) The geology of the southeastern portion of the Mid-Continental Rift system, eastern Minnesota and western Wisconsin: 44th Institute on Lake Superior Geology part 2: 33-78.
Dott, Robert H. & J.W. Attig, (2004) Roadside Geology of Wisconsin, Mountain Press, 345 p.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Polk_County,_Wisconsin
Wikidata ID:Q376102
GeoNames ID:5267654

External Links

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

Localities in this Region
Show map


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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: July 17, 2019 15:46:43 Page generated: April 16, 2019 00:54:24
Go to top of page