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| Wilson, W.F., McKenzie, B.J. (1978) Mineral Collecting Sites in North Carolina. Information Circular 24. North Carolina Division of Mineral Resources NCGS Information Circular 24 |
| North Carolina NOA Site Screening Summary Report (2006) Screening of Historic Mines,Historic Asbesto Prospects,and Natural Asbestos Occurrences in North Carolina |
| Dockal, James A., and Smith, Michael S. (2007) Petrography of the County Rock Surrounding the Crabtree Pegmatite, Spruce Pine District, Mitchell County, North Carolina :University of North Carolina Wilmington |