Milbank Granite

Pink to dark-red, coarse-grained granite composed of orthoclase, quartz, and biotite.
State South Dakota
Name Milbank Granite
Geologic age Upper Archean
Lithologic constituents
Major
Igneous > Plutonic > Granitic > GranitePink to dark-red, coarse-grained granite composed of orthoclase, quartz, and biotite.
References

Tomhave, D.W., and Schulz, L.D., 2004, Bedrock Geologic Map Showing Configuration of the Bedrock Surface in South Dakota East of the Missouri River, South Dakota Geological Survey, GM 9, scale 1:500,000.

NGMDB product
Counties Grant