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Ammonioalunite from
The Geysers, West Mayacmas Mining District, Sonoma County, California, USA


Locality type:Geothermal Field
Classification
Species:Ammonioalunite
Formula:(NH4)Al3(SO4)2(OH)6
Comments:Discovered and described by Altaner et al (1988) from a single specimen in the Smithsonian Museum (NMNH 145596) where it was idetified in a physical mixture of ammonioalunite, ammoniojarosite, and amorphous silica.
Colour:grayish white
Confirmation
Validity:Valid - Type Locality
Data
Mineral Data:Click here to view Ammonioalunite data
Locality Data:Click here to view The Geysers, West Mayacmas Mining District, Sonoma County, California, USA
Data Identifiers
Mindat Occurrence Record ID:526
Long-form Identifier:1:3:526:3
GUID (UUID V4):0
Nearest other occurrences of Ammonioalunite
38.3km (23.8 miles) ⓘMcLaughlin Mine (Manhattan Mine), Knoxville, Knoxville Mining District, Napa County, California, USA
References
Altaner, Stephen P., Fitzpatrick, Joan J., , M. Dennis Krohn, Bethke, Philip M., Hayba, Daniel O., Goss, James A., Brown, Zoe Ann (1988) Ammonium in alunites. American Mineralogist, 73 (1-2) 145-152
Cooper, Joseph F., Dunning, Gail E. (1993) History and Minerals of The Geysers, Sonoma County, California. The Mineralogical Record, 24 (5) 339-354
 
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