Minerals of the Grizzly Pegmatite/Marquette County, Michigan

摘要

The Grizzly pegmatite is located in the SE (1/4) of the NW (1/4) of sec. 21, T47 N R29 W, along highway M-95, in Marquette County. This pegmatite is part of the Bell Creek granite, which is typically a pegmatite-poor granite, but locally does have grains that reach dimensions justifying some areas to be termed "pegmatitic" (Hoffman, 1987). Snelgrove (1944) briefly described this pegmatite and suggested further study be done in this area, as he felt there was a chance of finding feldspar suitable for commercial uses. This study is the first detailed mineralogical investigation of the Grizzly pegmatite and the first time the name "Grizzly pegmatite" has been used to describe this particular location, named for original property owner, Grizzly Gilmer.