Syenite, monzodiorite, granodiorite, and diorite

Syenite, monzodiorite, granodiorite, and diorite. Commonly hornblende- or pyroxene-bearing; Includes the Coon Lake, Side Lake, and Linden (~2,666 Ma) plutons of north-central Minnesota.
State Minnesota
Name Syenite, monzodiorite, granodiorite, and diorite
Geologic age Neoarchean
Lithologic constituents
Major
Igneous > Plutonic > Granitic > Granodiorite (Pluton)commonly hornblende- or pyroxene-bearing
Igneous > Plutonic > Syenitic > Syenite (Pluton)commonly hornblende- or pyroxene-bearing
Igneous > Plutonic > Dioritic > Monzodiorite (Pluton)commonly hornblende- or pyroxene-bearing
Minor
Igneous > Plutonic > Dioritic > Diorite (Pluton)commonly hornblende- or pyroxene-bearing
Comments Intrusions in all subprovinces of the Superior Province. Part of generally discrete, unfoliated to weakly magmatically foliated or lineated plutons.
References

Jirsa, Mark A., Boerboom, Terrence J., Chandler, Val W., Mossler, John H., Runkel, Anthony C., and Setterholm, Dale R., 2011, S-21 Geologic Map of Minnesota-Bedrock Geology; Minnesota Geological Survey, State Map Series S-21. Scale 1:500,000.

NGMDB product
Counties Cook - Itasca - Koochiching - Lake - Lake of the Woods - Saint Louis