A prominent volcanic cone located 10 miles east of the summit of San Francisco Mountain.
Six fumerole areas (1-6) near peak of crater.
Three different assemblages of minerals from fumeroles:
Yellow-white zone (see Alunite associated minerals)
Dull red zone (see Alum-Na associated minerals)
Dark Gray- Pale Brown Zone (see Magnetite associated minerals)
References
Hanson, S. L., A. U. Fastner, W. B. Simmons (2008) Mineralogy of the Fumerole deposits at Sunset Crater Volcano National Monument, Northern Arizona. Rocks & Mnerals 83:6 pp 534-544.
Guild, F.N. (1910), The mineralogy of Arizona, The Chemical Publishing Co., Easton, PA.
Robinson, H.H. (1913), The San Franciscan Volcanic Field, Arizona, USGS PP 76: 89.
Galbraith, F.W. (1947), Minerals of Arizona, AZrizona Bureau of Mines Bull. 153: 13.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 57.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 386.
Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005; 4.
Mineral List
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