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Opal from
Sulphur Bank Mine (Sulfur Bank Mine; Sulphur Bank deposits), Clear Lake Oaks, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Lake County, California, USA


Locality type:Mine
Classification
Species:Opal
Formula:SiO2 · nH2O
Comments:Occurs as irregular masses with aragonite in hydrothermally altered andesite.
Colour:Pale blue
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Aragonite
Coquimbite
Cristobalite
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Sulphur Bank Mine (Sulfur Bank Mine; Sulphur Bank deposits), Clear Lake Oaks, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Lake County, California, USA
Data Identifiers
Mindat Occurrence Record ID:148019
Long-form Identifier:1:3:148019:1
GUID (UUID V4):0
Nearest other occurrences of Opal
17.3km (10.8 miles) ⓘBaker Mine, Lower Lake, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Lake County, California, USA
17.7km (11.0 miles) ⓘElgin Mine, Wilbur Springs, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Coast Ranges, Colusa County, California, USA
19.1km (11.9 miles) ⓘAbbott Mine (Abbott Quicksilver Mine), Wilbur Springs area, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Lake County, California, USA
20.5km (12.8 miles) ⓘPetray Mine, Wilbur Springs, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Coast Ranges, Colusa County, California, USA
20.7km (12.9 miles) ⓘWide Awake Mine, Cherry Hill deposit, Wilbur Springs, Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District), Coast Ranges, Colusa County, California, USA
24.5km (15.2 miles) ⓘBurgett prospect, Sugarloaf, Coast Ranges, Colusa County, California, USA
25.4km (15.8 miles) ⓘThe Geysers, West Mayacmas Mining District, Sonoma County, California, USA
28.0km (17.4 miles) ⓘSocrates Mine, Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA
29.4km (18.3 miles) ⓘHelen Mine (Helen Mine group; Dead Broke Mine; American Mine), Castle Rock Springs, East Mayacmas Mining District, Lake County, California, USA
31.2km (19.4 miles) ⓘJumbo Mine (B & M Mine; Double Star Mine), Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA
References
 
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