Biotite from selected localities.
USA | |
| U.S Bureau of Mines/Spatial Data from the Minerals System/Mineral Industry Location System(Mas/Mils)CD-Rom,Sep,1995 |
Wallace R.Griffitts and Jerry C.Olson (1953) Mica Deposits Of The Southeastern Piedmont:USGS Paper 248-D | |
Wallace R.Griffitts and Jerry C.Olson (1953) Mica Deposits Of The Southeastern Piedmont:USGS Paper 248-D |