Humboldt Mine (Edwards Mine), Humboldt Township, Marquette iron range, Marquette Co., Michigan, USA
|Latitude & Longitude (WGS84):||46° 29' 3'' North , 87° 54' 18'' West|
|Latitude & Longitude (decimal):||46.48417,-87.90500|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
An inactive, open-pit iron mine worked by Cleveland Cliffs. The company claims that the mine was the first processor of low-grade iron ore.
13 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
1600 - 2500 Ma
|Menominee Group, undivided|
Age: Proterozoic (1600 - 2500 Ma)
Stratigraphic Name: Menominee Group
Comments: Continental margin assemblage (north of Niagara Fault)
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.