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Read's Creek copper prospects (Readstown copper occurrence), Vernon Co., Wisconsin, USAi
Regional Level Types
Read's Creek copper prospects (Readstown copper occurrence)Group of Prospects
Vernon Co.County
WisconsinState
USACountry

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Latitude & Longitude (WGS84): 43° 28' 38'' North , 90° 49' 12'' West
Latitude & Longitude (decimal): 43.47722,-90.82000
GeoHash:G#: 9zxrm6fch
Locality type:Group of Prospects
KΓΆppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Readstown416 (2017)5.8km
Liberty558 (2017)8.2km
Soldiers Grove560 (2017)9.8km
Viroqua4,362 (2017)10.4km
Viola676 (2017)12.7km


A series of small prospects were dug into Ordovician Prairie du Chien Group carbonate rocks on either side of Read's Creek in the 1880's in Sec 34, 35,36 T12N R4W, about 4-5 km west of Readstown. Few traces remain.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


4 valid minerals.

Detailed Mineral List:

β“˜ Chalcocite
Formula: Cu2S
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
β“˜ Chalcopyrite
Formula: CuFeS2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
β“˜ Dolomite
Formula: CaMg(CO3)2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
Reference: Cordua, W.S., 1998, "Minerals of Wisconsin", Rocks and Minerals vol. 73 #6, p. 378 - 398.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Chalcocite2.BA.05Cu2S
β“˜Chalcopyrite2.CB.10aCuFeS2
Group 5 - Nitrates and Carbonates
β“˜Dolomite5.AB.10CaMg(CO3)2
β“˜Malachite5.BA.10Cu2(CO3)(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
β“˜Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 1:1
β“˜Chalcopyrite2.9.1.1CuFeS2
Group 14 - ANHYDROUS NORMAL CARBONATES
AB(XO3)2
β“˜Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
β“˜Malachite16a.3.1.1Cu2(CO3)(OH)2

List of minerals for each chemical element

HHydrogen
Hβ“˜ MalachiteCu2(CO3)(OH)2
CCarbon
Cβ“˜ DolomiteCaMg(CO3)2
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ DolomiteCaMg(CO3)2
Oβ“˜ MalachiteCu2(CO3)(OH)2
MgMagnesium
Mgβ“˜ DolomiteCaMg(CO3)2
SSulfur
Sβ“˜ ChalcociteCu2S
Sβ“˜ ChalcopyriteCuFeS2
CaCalcium
Caβ“˜ DolomiteCaMg(CO3)2
FeIron
Feβ“˜ ChalcopyriteCuFeS2
CuCopper
Cuβ“˜ ChalcociteCu2S
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ MalachiteCu2(CO3)(OH)2

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleozoic
251.902 - 541 Ma



ID: 3187973
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 541 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Early Ordovician
470 - 485.4 Ma



ID: 2965659
Prairie du Chien Group

Age: Early Ordovician (470 - 485.4 Ma)

Stratigraphic Name: Shakopee Formation; Oneota Formation

Description: Dolomite with some sandstone and shale; includes Shakopee and Oneota Formations

Comments: On original paper map (WI001), the unit is Opc. The digital file (WI004) symbol is Op. Original map source: Cannon, W.F., Kress, T.H., Sutphin, D.M., Morey, G.B., Meints, Joyce, and Barber-Delach, Robert, 1997, Digital Geologic Map and mineral deposits of the Lake Superior Region, Minnesota, Wisconsin, Michigan: USGS Open-File Report 97-455 (version 3, Nov. 19

Lithology: Major:{dolostone}, Minor:{shale,sandstone}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Heyl, A. & West, W. (1982) Outlying mineral occurrences related to the Upper Mississippi Valley Mineral District, Wisconsin, Iowa, Illinois, and Minnesota: Economic Geology: 77(8): 1803-1817.


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