| Description |
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| Type Locality: | The Geysers, West Mayacmas District, Mayacmas Mts (Mayacamas Mts), Sonoma Co., California, USA is the type locality for Ammonioalunite |
| Comments: | Discovered and described by Altaner et al (1988) from a single specimen in the Smithsonian Museum (NMNH 145596) |
| Colour: | grayish white |
| Quality of samples: | not specified / average specimens |
| Confirmation |
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| Validity: | Believed Valid |
| References |
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| References: | American Mineralogist (1988): 73: 145-152.; Dunning, G. S. & Cooper, J. F. (1993): History and minerals of The Geysers Sonoma County, California. Mineralogical Record 24 (5): 339-352 |
| Data |
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| Mineral Data: | Click here to view Ammonioalunite data |
| Locality Data: | Click here to view The Geysers, West Mayacmas District, Mayacmas Mts (Mayacamas Mts), Sonoma Co., California, USA |