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Mesabi Range, St. Louis Co., Minnesota, USA

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Latitude & Longitude (WGS84): 47° 28' North , 92° 45' West
Latitude & Longitude (decimal): 47.46667,-92.75000
Köppen climate type:Dfb : Warm-summer humid continental climate


Major Iron ore deposits.
Precambrian banded iron formation.

The Iron Range Interpretation Center in Chisolm is an essential stop to understanding the geological and human history of the deposits.

Mineral List

Mineral list contains entries from the region specified including sub-localities

31 valid minerals. 2 (TL) - type locality of 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!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

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

Statherian - Orosirian
1600 - 2050 Ma



ID: 2720594
Slate and graywacke

Age: Paleoproterozoic (1600 - 2050 Ma)

Stratigraphic Name: Rove Formation; Virginia Formation; Thompson Formation

Description: Slate and graywacke. Includes the Rove (~1,836 to 1,777 Ma), Virginia (~1,832 Ma near base), and Thompson Formations (youngest zircons in the Thompson Formation ~1,790 Ma).

Comments: Part of the Animikie Group. Part of the Geon 18 intrusions and supracrustal rocks (syn- to late Penokean orogenesis).

Lithology: Major:{slate,graywacke}

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


Localities in this Region

USA
USA

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

Morey, G.B. (1972) The Mesabi Range: in Sims, P.K. & Morey, G.M. editors Geology of Minnesota: A Centennial Volume (in honor of George M. Schwartz),Minnesota Geological Survey: 204-217.

Marsden, R. W. (1977) Iron ore reserves of the Mesabi Range, Minnesota: Minnesota Geological Survey: Open File Report: OFR77-02 , 20 p.

Lepp, H (1982) Minnesota’s Iron Ranges: Rocks and Minerals: 57 (3): 96-101

Jirsa, M, V. Chandler & R. Lively (2005) Bedrock Geology of the Mesabi Iron Range Minnesota: M163 1 sheet.






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