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Birch Lake Deposit, Ely-Hoyt Lakes Area, St. Louis Co., Minnesota, USA

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Latitude & Longitude (WGS84): 47° 45' 1'' North , 91° 49' 4'' West
Latitude & Longitude (decimal): 47.7502777778, -91.8177777778

Commodities (Major) - PGE - Palladium, Nickel, Copper, PGE - Platinum; (Minor) - PGE - Rhodium, Titanium, Cobalt; (Trace) - Silver, Gold
Development Status: Prospect
Deposit Model: 9: Duluth Cu-Ni-PGE
Host Rock Unit: Duluth Complex, South Kawishiwi Intrusion.
Structure: Breccia Zones, Faulting Related To Rift Origin Of Duluth Complex, Serpentization
Host Rock: Gabbro
Tectonic Structure: Midcontinent Rift

Mineral List

25 valid minerals.

Rock Types Recorded

Entries shown in red are rocks recorded for this region.

Note: this is a very new system on and data is currently VERY limited. Please bear with us while we work towards adding this information!

The above list contains all mineral locality references listed on 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 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.


Bonnichsen, B. (1974) Copper and nickel resources in the Duluth Complex, Minnesota: Minnesota Geological Survey Information Circular 10, 24 p.

Page, N.J. (1986) Descriptive model of Duluth Cu-Ni-PGE: in Cox, D.P. & Singer, D.A. editors: Mineral Deposit Models: U.S. Geological Survey Bulletin 1693, p. 16.

Good, D., Borysenko, J., McBride, J., Walford, P., Smyk, M., Hollings, P., ... & Corkery, J. (2010) Cu-Ni-PGE Deposits in Mafic Intrusions of the Lake Superior Region June 24-30, 2010. 11th International Platinum Symposium

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