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Iron Ridge Mines, Iron Ridge District (Neda Iron District), Dodge Co., Wisconsin, USAi
Regional Level Types
Iron Ridge MinesGroup of Mines
Iron Ridge District (Neda Iron District)Mining District
Dodge Co.County
WisconsinState
USACountry

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Latitude & Longitude (WGS84): 43° 25' 36'' North , 88° 32' 5'' West
Latitude & Longitude (decimal): 43.42667,-88.53472
GeoHash:G#: dp9p13dfx
Locality type:Group of Mines
Köppen climate type:Dfa : Hot-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Iron Ridge904 (2017)3.0km
Mayville4,989 (2017)7.5km
Horicon3,689 (2017)8.3km
Hustisford1,100 (2017)10.4km
Kekoskee159 (2017)11.7km


The Iron Ridge Mines are located along the Niagria Escarpment within the Iron Ridge/Neda Iron District. The district is located between the towns of Iron Ridge and Mayville, just east along highway 67. During the time the district was active from the 1850's to 1915 four iron mines and one limestone quarry sprung up in the area producing millions of tons of mid to high grade iron ores. The mines that thrived there at the time are listed from south to north. The Iron Ridge Mine aka Neda Mine or Oliver Mine, the Mayville Open Pit Mine, the Mayville Shaft Mine and the Unnamed Mine. An ochre pigment prospect known as the Neda Paint Pit also existed within the district. Even though the mining industry in the area is long dead, the Mayville White Limestone Quarry (Located between the Mayville Open Pit Mine and the Mayville Shaft Mine.) though only quarrying limestone for concrete and construction purposes, the quarry is still as active and bustling as it was when the iron industry was alive and strong. Many of the rarer minerals were described by Hawley et. al. (1934) on microscopic grains of phosphate minerals from the oolitic iron ore. The mine site is currently the property of the University of Wisconsin- Milwaukee which maintains a bat hibernaculum in the old mine workings.

For more information on the history of the iron mining industry in Dodge County, read "When Iron was King in Dodge County" by George G. Frederick.

Regions containing this locality

North America PlateTectonic Plate

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

24 valid minerals.

Detailed Mineral List:

Allophane
Formula: (Al2O3)(SiO2)1.3-2 · 2.5-3H2O
'Anorthoclase'
Formula: (Na,K)AlSi3O8
'Apatite'
'Apatite var: Collophane'
'Biotite'
Calcite
Formula: CaCO3
'Chlorite Group'
Corundum
Formula: Al2O3
Cristobalite
Formula: SiO2
Delvauxite
Formula: CaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed ·
Dolomite
Formula: CaMg(CO3)2
Evansite
Formula: Al3(PO4)(OH)6 · 6H2O
Fluorite
Formula: CaF2
Goethite
Formula: α-Fe3+O(OH)
Gypsum
Formula: CaSO4 · 2H2O
'Halloysite'
Formula: Al2(Si2O5)(OH)4
Hematite
Formula: Fe2O3
Magnetite
Formula: Fe2+Fe3+2O4
Metavariscite
Formula: AlPO4 · 2H2O
Microcline
Formula: K(AlSi3O8)
Northupite
Formula: Na3Mg(CO3)2Cl
Opal
Formula: SiO2 · nH2O
Orthoclase
Formula: K(AlSi3O8)
Phosphosiderite
Formula: FePO4 · 2H2O
Pyrite
Formula: FeS2
Pyrrhotite
Formula: Fe7S8
Quartz
Formula: SiO2
Siderite
Formula: FeCO3
Tridymite
Formula: SiO2
Variscite
Formula: AlPO4 · 2H2O

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Corundum4.CB.05Al2O3
Cristobalite4.DA.15SiO2
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Opal4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
Tridymite4.DA.10SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Northupite5.BF.05Na3Mg(CO3)2Cl
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
Delvauxite8.DM.35CaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed ·
Evansite8.DF.10Al3(PO4)(OH)6 · 6H2O
Metavariscite8.CD.05AlPO4 · 2H2O
Phosphosiderite8.CD.05FePO4 · 2H2O
Variscite8.CD.10AlPO4 · 2H2O
Group 9 - Silicates
Allophane9.ED.20(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
'Anorthoclase'9.FA.30(Na,K)AlSi3O8
'Halloysite'9.ED.10Al2(Si2O5)(OH)4
Microcline9.FA.30K(AlSi3O8)
Orthoclase9.FA.30K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'var: Collophane'-
'Biotite'-
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Corundum4.3.1.1Al2O3
Hematite4.3.1.2Fe2O3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Northupite16a.3.9.1Na3Mg(CO3)2Cl
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
(AB)5(XO4)2·xH2O
Metavariscite40.4.3.1AlPO4 · 2H2O
Phosphosiderite40.4.3.2FePO4 · 2H2O
Variscite40.4.1.1AlPO4 · 2H2O
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A3(XO4)Zq·xH2O
Evansite42.1.2.1Al3(PO4)(OH)6 · 6H2O
A2(XO4)Zq·xH2O
Delvauxite42.6.6.1CaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed ·
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Allophane71.1.5.1(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
'Halloysite'71.1.1.4Al2(Si2O5)(OH)4
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Cristobalite75.1.1.1SiO2
Quartz75.1.3.1SiO2
Tridymite75.1.2.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
'Anorthoclase'76.1.1.6(Na,K)AlSi3O8
Microcline76.1.1.5K(AlSi3O8)
Orthoclase76.1.1.1K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Apatite'-
'var: Collophane'-
'Biotite'-
'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
H Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
H DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed ·
H EvansiteAl3(PO4)(OH)6 · 6H2O
H Goethiteα-Fe3+O(OH)
H GypsumCaSO4 · 2H2O
H HalloysiteAl2(Si2O5)(OH)4
H MetavarisciteAlPO4 · 2H2O
H OpalSiO2 · nH2O
H PhosphosideriteFePO4 · 2H2O
H VarisciteAlPO4 · 2H2O
CCarbon
C SideriteFeCO3
C CalciteCaCO3
C DolomiteCaMg(CO3)2
C NorthupiteNa3Mg(CO3)2Cl
OOxygen
O MagnetiteFe2+Fe23+O4
O SideriteFeCO3
O Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
O Anorthoclase(Na,K)AlSi3O8
O CalciteCaCO3
O CorundumAl2O3
O CristobaliteSiO2
O DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed ·
O DolomiteCaMg(CO3)2
O EvansiteAl3(PO4)(OH)6 · 6H2O
O Goethiteα-Fe3+O(OH)
O GypsumCaSO4 · 2H2O
O HalloysiteAl2(Si2O5)(OH)4
O HematiteFe2O3
O MetavarisciteAlPO4 · 2H2O
O MicroclineK(AlSi3O8)
O NorthupiteNa3Mg(CO3)2Cl
O OpalSiO2 · nH2O
O OrthoclaseK(AlSi3O8)
O PhosphosideriteFePO4 · 2H2O
O QuartzSiO2
O TridymiteSiO2
O VarisciteAlPO4 · 2H2O
FFluorine
F FluoriteCaF2
NaSodium
Na Anorthoclase(Na,K)AlSi3O8
Na NorthupiteNa3Mg(CO3)2Cl
MgMagnesium
Mg DolomiteCaMg(CO3)2
Mg NorthupiteNa3Mg(CO3)2Cl
AlAluminium
Al Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Al Anorthoclase(Na,K)AlSi3O8
Al CorundumAl2O3
Al EvansiteAl3(PO4)(OH)6 · 6H2O
Al HalloysiteAl2(Si2O5)(OH)4
Al MetavarisciteAlPO4 · 2H2O
Al MicroclineK(AlSi3O8)
Al OrthoclaseK(AlSi3O8)
Al VarisciteAlPO4 · 2H2O
SiSilicon
Si Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Si Anorthoclase(Na,K)AlSi3O8
Si CristobaliteSiO2
Si HalloysiteAl2(Si2O5)(OH)4
Si MicroclineK(AlSi3O8)
Si OpalSiO2 · nH2O
Si OrthoclaseK(AlSi3O8)
Si QuartzSiO2
Si TridymiteSiO2
PPhosphorus
P DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed ·
P EvansiteAl3(PO4)(OH)6 · 6H2O
P MetavarisciteAlPO4 · 2H2O
P PhosphosideriteFePO4 · 2H2O
P VarisciteAlPO4 · 2H2O
SSulfur
S GypsumCaSO4 · 2H2O
S PyriteFeS2
S PyrrhotiteFe7S8
ClChlorine
Cl NorthupiteNa3Mg(CO3)2Cl
KPotassium
K Anorthoclase(Na,K)AlSi3O8
K MicroclineK(AlSi3O8)
K OrthoclaseK(AlSi3O8)
CaCalcium
Ca CalciteCaCO3
Ca DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed ·
Ca DolomiteCaMg(CO3)2
Ca FluoriteCaF2
Ca GypsumCaSO4 · 2H2O
FeIron
Fe MagnetiteFe2+Fe23+O4
Fe SideriteFeCO3
Fe DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed ·
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe PhosphosideriteFePO4 · 2H2O
Fe PyriteFeS2
Fe PyrrhotiteFe7S8

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]

Ordovician
443.8 - 485.4 Ma



ID: 2959557
Maquoketa Formation

Age: Ordovician (443.8 - 485.4 Ma)

Stratigraphic Name: Maquoketa Formation

Description: Shale, dolomitic shale and dolomite; includes overlying Neda Formation (age uncertain) consisting of oolitic iron oxides and shale

Comments: 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:{shale,dolostone}

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

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Chamberlain, T. C. (1877) Geology of Eastern Wisconsin, in Geology of Wisconsin--Survey of 1873-1877, vol. II, p. 93-405.
Hawley, J. E. & A.P. Beavan (1934), Mineralogy and genesis of the Mayville Iron Ore of Wisconsin: American Mineralogist :19 (11): p. 493-514.
U. S. Geological Survey (1976) Mineral and Water Resources of Wisconsin 185 p.
Frederick, George (1993) When Iron was King in Dodge County, Wisconsin: Mayville Historical Society
Paul, R. A. & J. Emerick (1991) Genesis of the Upper Ordovician Neda Formation in eastern Wisconsin: in Mudrey, M. edited, Ordovician-Silurian boundary of the Neda Formation: Geoscience Wisconsin: 14: 23-52.

Localities in this Region
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