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USA (FRL) | |
| 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: 1049. Hess, F.L. and E.P. Henderson (1931) Fervanite, a hydrous ferric vanadate. American Mineralogist: 16: 273–277. |
| Henderson, E.P. (1935) Steigerite, a new vanadium mineral. American Mineralogist: 20: 769-772. |
- Slick Rock Mining District
| Eckel, Edwin Butt , Cobban, Robert R., Mosburg, Shirley K., Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing. |