‡Ref.: Williams, S.A. (1980a), Schieffelinite, a new lead tellurate-sulfate from Tombstone, Arizona, Mineralogical Magazine: 43: 771-773.
Williams, S.A. (1980b), The Tombstone District, Cochise County, Arizona, Mineralogical Record: 11: 251-256
Rocks & Minerals (1982): 57: 16.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 209, 211, 212-213, 227, 269, 321, 356, 364, 375, 379.