Muscovite is a standard mica, forming silvery to pale-coloured flakes most commonly schists and granite pegmatites. It may survive weatheirng, and kind sparkling grains in sands and sandstone. ADAMS COUNTY: Muscovite in widespread in quartzite and granitic rocks at Hamilton Mounds, Sec. 31 T.20N. R.7E and sec. CHIPPEWA COUNTY: Occurs alongside bedding planes and in argillites interbedded with the Flambeau quartzite, as exposed in SE sec. 1, SW sec. 2 and NE NE sec. 11 T.32N. R.7W. and within the SE SW sec. CLARK COUNTY: Wood Ranger Tools Present in felsic phyllonite with quartz and K feldspar exposed beneath the Mead Dam (SE sec. Major mineral in kink-banded muscovite-chlorite schist and muscovite quartzite uncovered in a small quarry alongside Co. M in NE sec. 1 T.26N. R.4W., N of the South Fork of the Eau Claire River (Myers, 1977