Ref.: Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 515, 620, 892.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 876, 986.
Olson, J. C. (1944) North Carolina Department of Conservation & Development, Bull. 43, Plate 2.
A mica mine.