Erie Mining Company Mine (Erie Mine Company-Hoyt Lakes Plant; Aurora Mine), Mesabi Range, St. Louis Co., Minnesota, USA
|Latitude & Longitude (WGS84):||47° 34' 57'' North , 92° 12' 8'' West|
|Latitude & Longitude (decimal):||47.58250,-92.20222|
Commodities (Major) - Iron
Development Status: Producer
Host Rock Unit: Biwabik Iron Formation, Trommald Formation
Tectonic Structure: Shield
3 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
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
1800 - 2050 Ma
|Gunflint (~1,878 Ma), Biwabik, and Emily Iron Formations|
Age: Orosirian (1800 - 2050 Ma)
Comments: Part of the Animikie Group. Part of the Geon 18 intrusions and supracrustal rocks (syn- to late Penokean orogenesis).
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. 
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.