|Latitude & Longitude (WGS84):||46° 30' 0'' North , 88° 7' 30'' West|
|Latitude & Longitude (decimal):||46.50000,-88.12500|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
Commodities (Major) - Graphite
Development Status: Prospect
Deposit Model: 69: Amorphous graphite
Host Rock Unit: Michigamme Formation
Host Rock: Slate
Regions containing this locality
|North America Plate||Tectonic Plate|
Select Mineral List TypeStandard Detailed Strunz Dana Chemical Elements
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
1 valid mineral.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Detailed Mineral List:
| ⓘ Graphite|
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
List of minerals arranged by Dana 8th Edition classification
|Group 1 - NATIVE ELEMENTS AND ALLOYS|
|Semi-metals and non-metals|
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
|Baraga Group; Michigamme Formation, undivided|
Age: Proterozoic (1600 - 2500 Ma)
Stratigraphic Name: Michigamme Formation
Description: Thick and stratigraphically varied formation of sedimentary and less abundant volcanic rocks. Metamorphosed graywacke is predominant rock of Michigamme Formation. Calcareous concretions common. Metamorphosed from cholorite to sillimanite grade (Cannon, 1986). Mapped undivided in poorly exposed areas
Comments: Continental margin assemblage (north of Niagara Fault). This unit description is a combination of descriptions for unit "Xm" [Michigamme Formation, undivided] and unit "Xmgs" [Michigamme Formation, metamorphosed graywacke] as originally published on the Sims (1992) map. Polygons identified on that paper map as "Xm" and "Xmgs" are combined under the single unit symbol "Xm" in this digital product. Reference: Cannon, W.C., 1986, Bedrock geologic map of the Iron River 1o x 2o quadrangle, Michigan and Wisconsin: U.S. Geological Survey Miscellaneous Investigations Series Map I-1360-B, scale= 1:250,000. 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
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. 
3200 - 3600 Ma
|Archean intrusive rocks|
Age: Paleoarchean (3200 - 3600 Ma)
Lithology: Intrusive igneous 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.