- West Mayacmas Mining District
| Cooper, Joseph F., Dunning, Gail E. (1993) History and Minerals of The Geysers, Sonoma County, California. The Mineralogical Record, 24 (5) 339-354 Altaner, S.P., Fitzpatrick, J.J., Krohn, M.D., Bethke, P.M., Hayba, D.O., Goss, J.A., Brown, Z.A. (1988) Ammonium in alunites. American Mineralogist: 73: 145-152. |