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Rouchleau Mine, Mesabi Range, St. Louis Co., Minnesota, USAi
Regional Level Types
Rouchleau MineMine
Mesabi RangeMountain Range
St. Louis Co.County
MinnesotaState
USACountry

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Latitude & Longitude (WGS84): 47° 30' 38'' North , 92° 31' 24'' West
Latitude & Longitude (decimal): 47.51056,-92.52333
GeoHash:G#: cbqnq9494
USGS MRDS Record:10072872
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Virginia8,587 (2017)1.7km
Parkville2,525 (2017)4.8km
Gilbert1,792 (2017)5.0km
Eveleth3,673 (2017)5.5km
Mountain Iron2,880 (2017)7.9km


REF:Deposit:: MOREY, G.B.,1972. MESABI RANGE; IN; SIMS,P.K. AND MOREY, G.B.,EDS., GEOLOGY OF MINNESOTA; A CENTENNIAL VOLUME,MINN.GEOL.SURV.,P.204-217.
Deposit:: WHITE, D.A.,1954. STRATIGRAPHY AND STRUCTURE OF THE MESABI RANGE, MINNESOTA, MINN.GEOL.SURV.BULL
Commodities (Major) - Iron
Development Status: Past Producer
Host Rock Unit: Branded Iron Formation, Iron Formation, Biwabik - Ore, Divided Into 4 Informal Units: Upper Slaty 75' Thick Limestones And
Structure: Restricted Basin Required For Banded Iron Formation Deposition., Mesabi Range, Biwabik Fm. Exposed In A Long Narrow Belt Within The Mountains.
Tectonic Structure: North American Craton, Southern Most Portion Of Canadian Shield.

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 at this locality.


Mineral List


5 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!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Calcite
Formula: CaCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Minnesotaite
Formula: Fe2+3Si4O10(OH)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Siderite
Formula: FeCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Calcite5.AB.05CaCO3
Siderite5.AB.05FeCO3
Group 9 - Silicates
Minnesotaite9.EC.05Fe2+3Si4O10(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Minnesotaite71.2.1.5Fe2+3Si4O10(OH)2

List of minerals for each chemical element

HHydrogen
H MinnesotaiteFe32+Si4O10(OH)2
CCarbon
C SideriteFeCO3
C AnkeriteCa(Fe2+,Mg)(CO3)2
C CalciteCaCO3
OOxygen
O MagnetiteFe2+Fe23+O4
O SideriteFeCO3
O AnkeriteCa(Fe2+,Mg)(CO3)2
O MinnesotaiteFe32+Si4O10(OH)2
O CalciteCaCO3
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
SiSilicon
Si MinnesotaiteFe32+Si4O10(OH)2
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca CalciteCaCO3
FeIron
Fe MagnetiteFe2+Fe23+O4
Fe SideriteFeCO3
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe MinnesotaiteFe32+Si4O10(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

Orosirian
1800 - 2050 Ma



ID: 2981971
Gunflint (~1,878 Ma), Biwabik, and Emily Iron Formations

Age: Orosirian (1800 - 2050 Ma)

Stratigraphic Name: Gunflint Iron Formation; Biwabik Iron Formation; Emily Iron Formation

Description: Locally includes thin basal sandstone and conglomerate. Capped by an irregular layer of brecciated iron-formation and ejecta derived from the 1,850 Ma Sudbury meteorite impact.

Comments: Part of the Animikie Group. Part of the Geon 18 intrusions and supracrustal rocks (syn- to late Penokean orogenesis). Original map source: Jirsa, Mark A., Boerboom, Terrence J., Chandler, Val W., Mossler, John H., Runkel, Anthony C., and Setterholm, Dale R., 2011, S-21 Geologic Map of Minnesota-Bedrock Geology; Minnesota Geological Survey, State Map Series S-21. Scale 1:500,000.

Lithology: Major:{banded iron formation,sedimentary breccia}, Minor:{sandstone,conglomerate}

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]

Neoarchean
2500 - 2800 Ma



ID: 3185909
Archean volcanic rocks

Age: Neoarchean (2500 - 2800 Ma)

Lithology: Felsic volcanic 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]

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


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