Muscovite from Cuyuna North Range, Crow Wing County, Minnesota, USA
USA | |
| [var. Sericite] Institute on Lake Superior Geology Proceedings, 40th Annual Meeting, Houghton, MI, v. 40, part 4, |
| [var. Sericite] USGS Prof Paper 407 |
Schmidt, R.G. (1963) Geology and ore deposits of the Cuyuna North Range, Minnesota: U.S. Geological Survey Professional Paper 407, 96 p. |