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Upper Peninsula Graphite Deposit, Marquette Co., Michigan, USAi
Regional Level Types
Upper Peninsula Graphite DepositDeposit
Marquette Co.County
MichiganState
USACountry

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Latitude & Longitude (WGS84): 46° 30' 0'' North , 88° 7' 30'' West
Latitude & Longitude (decimal): 46.50000,-88.12500
GeoHash:G#: f032d9j64
Locality type:Deposit
Köppen climate type:Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Michigamme271 (2017)4.0km
Republic570 (2017)15.4km
West Ishpeming2,662 (2017)32.5km
Ishpeming6,483 (2017)35.0km
L'Anse1,934 (2017)37.9km


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 PlateTectonic Plate

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Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


1 valid mineral.

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!

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Alphabetical List Tree Diagram

Detailed Mineral List:

Graphite
Formula: C
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 1 - Elements
Graphite1.CB.05aC

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Graphite1.3.6.2C

List of minerals for each chemical element

CCarbon
C GraphiteC

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

Paleoproterozoic
1600 - 2500 Ma



ID: 2929459
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

Lithology: Major:{mixed clastic,metagraywacke}, Minor:{volcanic}

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]

Paleoarchean
3200 - 3600 Ma



ID: 3186753
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. [154]

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
MICHIGAN GEO-PULSE, 1987, GRAPHITE EVALUATION AND UTILIZATION RESEARCH: MICHIGAN GEO-PULSE, V. II, NO. 3, P. 4.
SKILLINGS' MINING REVIEW, LARGE GRAPHITE DEPOSIT ON UPPER PENINSULA UNDER RESEARCH BY MICH TECH/GEOLOGICAL SURVEY.


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