|
USA | |
| 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 |
| Streeter, Michael (2003) A Rockhounding Guide to North Carolinas Blue Ridge Mountains. Milestone Press Inc. |
| Rocks & Min.:60:66. |
| Clark, C. M., Hawthorne, F. C., Ottolini, L. (2011) Fluor-dravite, NaMg3Al6Si6O18(BO3)3(OH)3F, a new mineral species of the tourmaline group from the Crabtree emerald mine, Mitchell County, North Carolina: description and crystal structure. The Canadian Mineralogist, 49 (1) 57-62 doi:10.3749/canmin.49.1.57 |
| [var. Smoky Quartz] Streeter, Michael (2003) A Rockhounding Guide to North Carolinas Blue Ridge Mountains. Milestone Press Inc. |
| C.W. Allen collection |
| Lesure, Frank Gardner (1968) Mica deposits of the Blue Ridge in North Carolina. Professional Paper 577. US Geological Survey doi:10.3133/pp577 |
| [var. Smoky Quartz] H.D Webb Collection |
| [var. Smoky Quartz] Rocks & Min.: 11:57-58. |
| [var. Smoky Quartz] Steve Adams - The Adams Collection |