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Opal from
Felder Mine, El Verano, Sonoma Mountains, Sonoma County, California, USA


Locality type:Mine
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Felder Mine, El Verano, Sonoma Mountains, Sonoma County, California, USA
Data Identifiers
Mindat Occurrence Record ID:1005809
Long-form Identifier:1:3:1005809:7
GUID (UUID V4):0
Nearest other occurrences of Opal
7.4km (4.6 miles) ⓘRichter deposit, Glen Ellen, Sonoma Mountains, Sonoma County, California, USA
8.1km (5.0 miles) ⓘMount Pisgah Vineyard, Fetters Hot Springs, Sonoma County, California, USA
11.3km (7.1 miles) ⓘWeise Clay pit, Weise Ranch, Glen Ellen, Sonoma County, California, USA
15.8km (9.8 miles) ⓘDiatomite occurrence (1), Oakville, Oakville Mining District, Napa County, California, USA
23.0km (14.3 miles) ⓘBasalt Rock Company Mine, Vichy Springs, Napa County, California, USA
29.7km (18.4 miles) ⓘKellett Mine, Calistoga, Napa County, California, USA
34.2km (21.2 miles) ⓘGoodman Brothers deposit, Mark West Springs, West Mayacmas Mining District, Sonoma County, California, USA
37.0km (23.0 miles) ⓘPinole prospect (Pinole Dohrman; Pawsey; Dohrman Pawsey), Bayview-Montalvin, Contra Costa County, California, USA
40.5km (25.2 miles) ⓘCavagnaro prospect, Calistoga Hot Springs, Napa County, California, USA
42.0km (26.1 miles) ⓘCorona Mines (Vallejo Mines), Twin Peaks, Calistoga, Napa County, California, USA
References
Honke, Martin T., Jr. & Wm. E. Ver Planck, Jr. (1950), Mines and mineral resources of Sonoma County, California: California Journal of Mines and Geology: 46(1): 94, 97 (?)
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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