| Locality type: | Mine |
| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Great Eastern and Mount Jackson Mine, Guerneville, Guerneville Mining District, Coast Range, Sonoma County, California, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 334799 |
| Long-form Identifier: | 1:3:334799:7 |
| GUID (UUID V4): | 2be9dc85-e649-453c-9952-17f94fec20b3 |
| Nearest other occurrences of Opal |
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| 21.8km (13.5 miles) | ⓘGoodman Brothers deposit, Mark West Springs, West Mayacmas Mining District, Sonoma County, California, USA |
| 29.8km (18.5 miles) | ⓘJumbo Mine (B & M Mine; Double Star Mine), Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA |
| 30.1km (18.7 miles) | ⓘLivermore Quicksilver Mine, Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA |
| 31.1km (19.3 miles) | ⓘSocrates Mine, Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA |
| 32.6km (20.2 miles) | ⓘThe Geysers, West Mayacmas Mining District, Sonoma County, California, USA |
| 32.8km (20.4 miles) | ⓘHelen Mine (Helen Mine group; Dead Broke Mine; American Mine), Castle Rock Springs, East Mayacmas Mining District, Lake County, California, USA |
| 34.9km (21.7 miles) | ⓘGreat Western Mine (Laguna Western; Black Bart Mine; Tucker lease), Great Western-Mirabel group, Middletown, East Mayacmas Mining District, Lake County, California, USA |
| 36.8km (22.9 miles) | ⓘKellett Mine, Calistoga, Napa County, California, USA |
| 37.9km (23.6 miles) | ⓘPlymouth Mine, Calistoga Hot Springs, Napa County, California, USA |
| 38.3km (23.8 miles) | ⓘRosenhahnite occurrence, Russian River, Cloverdale area, Mendocino County, California, USA |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (volume) | | STATE OF CALIFORNIA EARL WARREN, Governor DEPARTMENT OF NATURAL RESOURCES WARREN IIANNUM, T. Director...1948 No. CALIFORNIA JOURNAL OF MINES AND GEOLOGY LIBRARY 1 UNIVERSITY OF CALIFORNIA DAVIS 1 ... ; STATE OF CALIFORNIA Earl Warren, Governor DEPARTMENT OF NATURAL RESOURCES Warren T. Hannum,...Third Floor, Ferry Building, San Francisco 11 District Offices State Building, 217 West 631 J Street...thousand books and scientific journals on geology, mining, mineralogy, chemistry, metallurgy, and related subjects |  | | Journal (volume) | | STATE OF CALIFORNIA DEPARTMENT OF NATURAL RESOURCES GEORGE D. NORDENHOLT. Director DIVISION OF MINES...Mineralogist JANUARY, 1939 No. CALIFORNIA JOURNAL OF MINES AND GEOLOGY QUARTERLY CHAPTER OF STATE...BUILDING, SAN FRANCISCO CALIFORNIA 70803 LIBRARY UNIVERSITY OF CALIFORNIA DAVIS 1 DIVISION OF MINES...MINES EXECUTIVE AND TECHNICAL STAFF WALTER W. BRADLEY State Mineralogist Olaf P. Jenkins, Chief...Logan, District Mining Engineer O. McK. Laizure, District W. Burling Tucker, Reid J. Mining Engineer |
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