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Peshtigo Mangerite in the Wolf River batholith; Peshtigo Mangerite

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Brown to dark-gray, coarse-grained (0.3-1.5 cm) inequigranular monzonite containing subhedral, zoned plagioclase, alkali feldspar, mafic silicates (fayalite, hypersthene, ferroaugite-hedenbergite, hornblende, and biotite), and interstitial quartz
State Wisconsin
Name Peshtigo Mangerite in the Wolf River batholith; Peshtigo Mangerite
Geologic age Middle Proterozoic
Lithologic constituents
Major
Igneous > Plutonic > Syenitic > MonzoniteBrown to dark-gray, coarse-grained (0.3-1.5 cm) inequigranular monzonite containing subhedral, zoned plagioclase, alkali feldspar, mafic silicates (fayalite, hypersthene, ferroaugite-hedebergite, hornblende, and biotite), and interstitial quartz
References

Van Schmus and others , 1975, Geology and age of the Wolf River batholith, Wisconsin: Geological Society of America Bullein, v. 86, p. 907-914.

Sims, P.K., 1992, Geologic map of Precambrian rocks, southern Lake Superior region, Wisconsin and northern Michigan: U.S. Geological Survey Miscellaneous Investigations Map I-2185, scale 1:500,000.

https://pubs.er.usgs.gov/publication/i2185
NGMDB product
Counties Marinette - Oconto