Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Crawford County, Wisconsin, USAi
Regional Level Types
Crawford CountyCounty
WisconsinState
USACountry

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PhotosMapsSearch
Type:
Largest Settlements:
PlacePopulation
Prairie du Chien5,757 (2017)
Wauzeka727 (2017)
Soldiers Grove560 (2017)
Gays Mills530 (2017)
Eastman410 (2017)
Mount Sterling207 (2017)
Mindat Locality ID:
25708
Long-form identifier:
mindat:1:2:25708:1
GUID (UUID V4):
0
Other Languages:
French:
comté de Crawford, Wisconsin, États-Unis
German:
Crawford County, Wisconsin, Vereinigte Staaten
Italian:
contea di Crawford, Wisconsin, Stati Uniti d'America
Russian:
Крофорд, Висконсин, Соединённые Штаты Америки
Simplified Chinese:
克勞福德縣, 威斯康辛州, 美国
Spanish:
Condado de Crawford, Wisconsin, Estados Unidos
Albanian:
Crawford County, Wisconsin, Shtetet e Bashkuara të Amerikës
Arabic:
مقاطعة كروفورد , ويسكونسن, الولايات المتحدة
Basque:
Crawford konderria , Wisconsin
Bavarian:
Crawford County, Wisconsin, Vaoanigte Stootn
Bishnupriya Manipuri:
ক্রাফোর্ড কাউন্টি, উইসকনসিন, তিলপারাষ্ট্র
Bulgarian:
Кроуфорд, Уисконсин, Съединени американски щати
Cebuano:
Crawford County , Wisconsin
Dutch:
Crawford County, Wisconsin, Verenigde Staten
Esperanto:
Kantono Crawford, Viskonsino
Farsi/Persian:
شهرستان کرفورد، ویسکانسین, ویسکانسین, ایالات متحده آمریکا
Hungarian:
Crawford megye, Wisconsin, Amerikai Egyesült Államok
Japanese:
クロウフォード郡, ウィスコンシン州, アメリカ合衆国
Latin:
Crawford Comitatus, Visconsinia, Civitates Foederatae Americae
Low Saxon/Low German:
Crawford County, Wisconsin, USA
Min Dong Chinese:
Crawford Gông, Wisconsin
Minnan / Hokkien-Taiwanese:
Crawford Kūn
Norwegian:
Crawford County, Wisconsin, USA
Polish:
Hrabstwo Crawford, Wisconsin, Stany Zjednoczone
Portuguese:
Condado de Crawford, Wisconsin, Estados Unidos
Romanian:
Comitatul Crawford, Wisconsin, Statele Unite ale Americii
Sardinian:
contea de Crawford, Wisconsin, Istados Unidos de Amèrica
Serbian:
Округ Крофорд , Висконсин, Сједињене Америчке Државе
Serbo-Croatian:
Crawford County, Wisconsin, Sjedinjene Američke Države
Swedish:
Crawford County, Wisconsin, USA
Traditional Chinese:
克勞福德縣, 威斯康辛州, 美國
Turkish:
Crawford, Wisconsin, Amerika Birleşik Devletleri
Ukrainian:
Кроуфорд, Вісконсин, Сполучені Штати Америки
Urdu:
کرافورڈ کاؤنٹی، وسکونسن, وسکونسن, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Crawford, Wisconsin, Chủng Quốc Hoa Kỳ
Waray:
Condado han Crawford, Wisconsin, Estados Unidos


The bedrock in Crawford County is Cambrian to Ordovician sedimentary rocks, primarily clean quartz sandstones, limestones, shales and dolostones. Softer Cambrian sandstone underlie valleys, with the more resistant Ordovician rocks holding up highlands. The area is in Wisconsin's "Driftless Area", meaning it apparently missed glaciation during the Pleistocene. River processes have pleasantly carved the landscape into a series of high hills ("mounds") and deep valleys ("coulees"). Scenic bluffs line the Wisconsin and Mississippi River Valleys. Driving the "Great River Road" (Highway 35) as it wends its way along the Mississippi is a great way to enjoy this country.

The carbonate rocks are often quarried, and can yield samples of calcite, dolomite, quartz and marcasite. The County is on the northern fringe of the Upper Mississippi Valley Zinc-Lead District. The district is laterally zoned. In Crawford County the low temperature hydrothermal ore forming fluids resulted primarily in a number of small copper deposits. The mines working these deposits were small, and are now overgrown or reclaimed. Still road cuts, quarries and other excavations hold the promise of uncovering some of these minerals.

Even though in the Driftless Area, deposits from rivers draining glaciated areas to the north and east hold the promise of finding drift copper, "Lake Superior" agates and other minerals in outwash.

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

12 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:

Azurite
Formula: Cu3(CO3)2(OH)2
Calcite
Formula: CaCO3
Chalcocite
Formula: Cu2S
Chalcopyrite
Formula: CuFeS2
Dolomite
Formula: CaMg(CO3)2
Galena
Formula: PbS
'Glauconite'
Formula: K0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
Goethite
Formula: Fe3+O(OH)
Malachite
Formula: Cu2(CO3)(OH)2
Marcasite
Formula: FeS2
Pyrite
Formula: FeS2
Quartz
Formula: SiO2
Quartz var. Agate
Formula: SiO2
References:
Quartz var. Chalcedony
Formula: SiO2
References:
Tenorite
Formula: CuO

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Marcasite2.EB.10aFeS2
Group 4 - Oxides and Hydroxides
Goethite4.00.Fe3+O(OH)
Tenorite4.AB.10CuO
Quartz
var. Agate
4.DA.05SiO2
var. Chalcedony4.DA.05SiO2
4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Azurite5.BA.05Cu3(CO3)2(OH)2
Malachite5.BA.10Cu2(CO3)(OH)2
Unclassified
'Glauconite'-K0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2

List of minerals for each chemical element

HHydrogen
H AzuriteCu3(CO3)2(OH)2
H GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
H GoethiteFe3+O(OH)
H MalachiteCu2(CO3)(OH)2
CCarbon
C AzuriteCu3(CO3)2(OH)2
C CalciteCaCO3
C DolomiteCaMg(CO3)2
C MalachiteCu2(CO3)(OH)2
OOxygen
O Quartz var. AgateSiO2
O AzuriteCu3(CO3)2(OH)2
O CalciteCaCO3
O Quartz var. ChalcedonySiO2
O DolomiteCaMg(CO3)2
O GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
O GoethiteFe3+O(OH)
O MalachiteCu2(CO3)(OH)2
O QuartzSiO2
O TenoriteCuO
MgMagnesium
Mg DolomiteCaMg(CO3)2
Mg GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
AlAluminium
Al GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
SiSilicon
Si Quartz var. AgateSiO2
Si Quartz var. ChalcedonySiO2
Si GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
Si QuartzSiO2
SSulfur
S ChalcopyriteCuFeS2
S ChalcociteCu2S
S GalenaPbS
S MarcasiteFeS2
S PyriteFeS2
KPotassium
K GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
CaCalcium
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
FeIron
Fe ChalcopyriteCuFeS2
Fe GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
Fe GoethiteFe3+O(OH)
Fe MarcasiteFeS2
Fe PyriteFeS2
CuCopper
Cu AzuriteCu3(CO3)2(OH)2
Cu ChalcopyriteCuFeS2
Cu ChalcociteCu2S
Cu MalachiteCu2(CO3)(OH)2
Cu TenoriteCuO
PbLead
Pb GalenaPbS

Fossils

There are 22 fossil localities from the PaleoBioDB database within this region.

These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences22
Youngest Fossil Listed450 Ma (Late/Upper Ordovician)
Oldest Fossil Listed485 Ma (Cambrian)
Stratigraphic Units
UnitNo. OccurrencesAge
Platteville - Mifflin18460.9 - 449.5 Ma (Ordovician)
Oneota4485.4 - 477.7 Ma (Paleozoic)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Holopea
genus
Animalia : Mollusca : Gastropoda : Holopeidae : Holopea460.9 - 449.5 Ma
Ordovician
Praenucula
genus
Animalia : Mollusca : Bivalvia : Nuculida : Praenuculidae : Praenucula460.9 - 449.5 Ma
Ordovician
Vanuxemia
genus
Animalia : Mollusca : Bivalvia : Myalinida : Myalinidae : Vanuxemia460.9 - 449.5 Ma
Ordovician
Stictopora
genus
Animalia : Bryozoa : Stenolaemata : Cryptostomida : Ptilodictyidae : Stictopora460.9 - 449.5 Ma
Ordovician
Hesperorthis
genus
Animalia : Brachiopoda : Rhynchonellata : Orthida : Hesperorthidae : Hesperorthis460.9 - 449.5 Ma
Ordovician
Pionodema
genus
Animalia : Brachiopoda : Rhynchonellata : Orthida : Draboviidae : Pionodema460.9 - 449.5 Ma
Ordovician
Skenidioides
genus
Animalia : Brachiopoda : Rhynchonellata : Protorthida : Skenidiidae : Skenidioides460.9 - 449.5 Ma
Ordovician
Lophospira serrulata
species
Animalia : Mollusca : Gastropoda : Lophospiridae : Lophospira : Lophospira serrulata460.9 - 449.5 Ma
Ordovician
Hormotoma gracilis
species
Animalia : Mollusca : Gastropoda : Murchisoniina : Hormotomidae : Hormotoma : Hormotoma gracilis460.9 - 449.5 Ma
Ordovician
Sinuites cancellatus
species
Animalia : Mollusca : Gastropoda : Bellerophontida : Sinuitidae : Sinuites : Sinuites cancellatus460.9 - 449.5 Ma
Ordovician
Levisoceras ellipticum
species
Animalia : Mollusca : Cephalopoda : Nautilida : Nautilidae : Levisoceras : Levisoceras ellipticum485.4 - 477.7 Ma
Paleozoic
Campylorthis deflecta
species
Animalia : Brachiopoda : Rhynchonellata : Orthida : Plaesiomyidae : Campylorthis : Campylorthis deflecta460.9 - 449.5 Ma
Ordovician
Oepikina minnesotensis
species
Animalia : Brachiopoda : Strophomenata : Strophomenida : Strophomenidae : Oepikina : Oepikina minnesotensis460.9 - 449.5 Ma
Ordovician
Schmidtella crassimarginata
species
Animalia : Arthropoda : Ostracoda : Palaeocopida : Schmidtella : Schmidtella crassimarginata460.9 - 449.5 Ma
Ordovician
Strophomena plattinensis
species
Animalia : Brachiopoda : Strophomenata : Strophomenida : Strophomenidae : Strophomena : Strophomena plattinensis460.9 - 449.5 Ma
Ordovician
Buehleroceras apertum
species
Animalia : Mollusca : Cephalopoda : Ellesmeroceratidae : Buehleroceras : Buehleroceras apertum485.4 - 477.7 Ma
Paleozoic
Burenoceras oneotense
species
Animalia : Mollusca : Cephalopoda : Ellesmeroceratidae : Burenoceras : Burenoceras oneotense485.4 - 477.7 Ma
Paleozoic
Burenoceras ungulatum
species
Animalia : Mollusca : Cephalopoda : Ellesmeroceratidae : Burenoceras : Burenoceras ungulatum485.4 - 477.7 Ma
Paleozoic
Fossil LocalitiesClick to show 2 fossil localities

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Crawford_County,_Wisconsin
Wikidata ID:Q494899
GeoNames ID:5249701

Localities in this Region

Other Regions, Features and Areas that Intersect


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

 
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