| Locality type: | Area |
| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Common Opal | 1 photo of Opal associated with Common Opal at this locality. |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Pillikin Mine area 3 (West Basin), Pilliken Mine (Pillikin Mine; Pillikan Mine; Pilliken Chrome Mine), Flagstaff Hill, Salmon Falls Mining District (Flagstaff Hill area), El Dorado County, California, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 326291 |
| Long-form Identifier: | 1:3:326291:7 |
| GUID (UUID V4): | bfb47421-888a-46cb-a560-51d7d7d803ac |
| Nearest other occurrences of Opal |
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| 1.9km (1.2 miles) | ⓘSteele Mine (Steel deposit), Pilliken Mine (Pillikin Mine; Pillikan Mine; Pilliken Chrome Mine), Flagstaff Hill, Salmon Falls Mining District (Flagstaff Hill area), El Dorado County, California, USA |
| 25.9km (16.1 miles) | ⓘStifle claims (Stifle prospects; Stifle Memorial claim; Traverse Cr. Special Interest Area; Traverse Creek Special Interest Area), Meadow Brook, Georgetown District, East Segment Mother Lode, El Dorado County, California, USA |
| 41.0km (25.5 miles) | ⓘChrysoprase and Moss Opal deposits, River Pines, Fiddletown Mining District (Oleta Mining District), Amador County, California, USA |
| 46.3km (28.8 miles) | ⓘHudson Bay Quartz Mine (Hudson Bay Qtz; Hudson Bay; Blue Ridge vein), Grass Valley, Grass Valley Mining District, Nevada County, California, USA |
| 51.2km (31.8 miles) | ⓘCuster prospect (Dooley prospect; Custer Dooley prospect), Sunnybrook, Pardee Mining District, Amador County, California, USA |
| 55.0km (34.2 miles) | ⓘVolcano, Volcano Mining District, Amador County, California, USA |
| 55.3km (34.4 miles) | ⓘUnknown diamond occurrence [1], Volcano, Volcano Mining District, Amador County, California, USA |
| 63.7km (39.6 miles) | ⓘHexter Placer Mine, Mokelumne Hill, Mokelumne Hill Mining District, East Belt, Calaveras County, California, USA |
| 64.3km (39.9 miles) | ⓘWallace Mine, Wallace, Camanche Mining District, Calaveras County, California, USA |
| 65.6km (40.8 miles) | ⓘGreen Mountain Mine (Calaveras Crystal mine), Chili Gulch (Chile Gulch ?), Mokelumne Hill, Mokelumne Hill Mining District, East Belt, Calaveras County, California, USA |
| References |
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Pillikin Mine area 3, Pilliken Mine, Flagstaff Hill, Salmon Falls Mining District, El Dorado County, California, USA