Biotite from selected localities.
USA | |
| Lesure, Frank G.,(1968) Mica Deposits of the Blue Ridge in North Carolina :USGS Professional Paper 577 |
| U.S Bureau of Mines,Spatial Data Extracted from the Minerals System/Mineral Industry Location System(MAS/MILS)CD-ROM,Sep,1995 |
Van King specimen | |
Lesure, Frank G.,(1968) Mica Deposits of the Blue Ridge in North Carolina:USGS Professional Paper 577 | |
Lesure, Frank G.,(1968) Mica Deposits of the Blue Ridge in North Carolina:USGS Professional Paper 577 | |
| Deuser,W.G.,and Herzog,L.F.,(1962) Rubidium-strontium age determinations of muscovite and biotites from pegmatites of the Blue Ridge and Piedmont:Journal of Geophysical Research,v.67,p.1997-2004 |
USGS Bull 315 | |
| Kunz,George Frederick.,(1907)History of the Gems Found in North Carolina: Bulletin No.12 |