Oligoclase from selected localities.
USA | |
| Deuser,W.G.,and Herzog,L.F.,(1962) Rubidium-Strontium age determinations of muscovites and biotites from the pegmatites of the Blue Ridge and Piedmont:Journal of Geophysical Research,v.67,p.1997-2007 |
Brobst,Donald A.,(1962) Geology of the Spruce Pine District Avery,Mitchell,and Yancey Counties,North Carolina:Geological Survey Bulletion 1122-A |
Plumtree, Avery County, North Carolina, USA