- Sonsela Butte Mining District
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 338, 343 Farnham, L.L., et al (1961), Manganese deposits of eastern Arizona, US Bur. Mines Info. Circ. 7990: 4-8. Mayo, E.B. (1956), Metalliferous minerals and mineral fuels, Mineral Resources, Vol. No. 1: 39 Mayo, E.B. (1955b), Manganese, in Mineral resources of the Navajo-Hopi Indian Reservations, Arizona-Utah, vol. 1, Univ. AZ, Tucson: 39-47. |