Active (2018) quarry exposing a good section of Ordovician rock from the Prairie du Chien Group through the St. Peter Sandstone and Sinnipee Group. Some layers contain vugs with calcite, dolomite and quartz crystals. There is also some patchy sulfide mineralization, often oxidized to iron oxides.

Regions containing this locality

North America Plate

Tectonic Plate

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Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Aggregates

ⓘ Limestone

ⓘ Sand and Gravel

Mineral List

4 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!

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Alphabetical List Tree Diagram

ⓘ Limestone

Detailed Mineral List:

ⓘ Calcite

Formula: CaCO₃

ⓘ Dolomite

Formula: CaMg(CO₃)₂

ⓘ Pyrite

Formula: FeS₂

ⓘ Quartz

Formula: SiO₂

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Pyrite	2.EB.05a	FeS₂
Group 4 - Oxides and Hydroxides
ⓘ	Quartz	4.DA.05	SiO₂
Group 5 - Nitrates and Carbonates
ⓘ	Calcite	5.AB.05	CaCO₃
ⓘ	Dolomite	5.AB.10	CaMg(CO₃)₂

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
A_mB_nX_p, with (m+n):p = 1:2
ⓘ	Pyrite	2.12.1.1	FeS₂
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO₃)
ⓘ	Calcite	14.1.1.1	CaCO₃
AB(XO₃)₂
ⓘ	Dolomite	14.2.1.1	CaMg(CO₃)₂
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO₂ with [4] coordinated Si
ⓘ	Quartz	75.1.3.1	SiO₂

List of minerals for each chemical element

C	Carbon
C	ⓘ Dolomite	CaMg(CO₃)₂
C	ⓘ Calcite	CaCO₃
O	Oxygen
O	ⓘ Dolomite	CaMg(CO₃)₂
O	ⓘ Calcite	CaCO₃
O	ⓘ Quartz	SiO₂
Mg	Magnesium
Mg	ⓘ Dolomite	CaMg(CO₃)₂
Si	Silicon
Si	ⓘ Quartz	SiO₂
S	Sulfur
S	ⓘ Pyrite	FeS₂
Ca	Calcium
Ca	ⓘ Dolomite	CaMg(CO₃)₂
Ca	ⓘ Calcite	CaCO₃
Fe	Iron
Fe	ⓘ Pyrite	FeS₂

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: 3014030

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)

Druke, D. et. al. (2002) Stop 4: Stratigraphy and hydrogeology of the Ordovician sedimentary section, Ripon, Wisconsin, Geology of the Upper Fox River Valley: Guidebook for the 28th Wisconsin Undergraduate Geology Field Conference, pages RQ 1-24.

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