| | Description | |
| Comments: | Found only once in an open fissure with opal, cinnabar and a yellow iron sulphate | | Habit: | Long fibers & small poorly terminated crystals | | Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Dunning, G. S. & Cooper, J. F. (1993): History and minerals of The Geysers Sonoma County, California. Mineralogical Record 24 (5): 339-352 | | Data | |
| Mineral Data: | Click here to view Gypsum data | | Locality Data: | Click here to view The Geysers, Sonoma Co., California, USA |
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