| Locality type: | Mine |
| Classification |
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| Species: | 'Serpentine Subgroup' (not an IMA approved species) |
| Formula: | D3[Si2O5](OH)4 |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals: |
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| Associates: | Cinnabar
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| Data |
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| Mineral Data: | Click here to view Serpentine Subgroup data |
| Locality Data: | Click here to view St. Johns Mine (St. John Mine; Vallejo Mine; St. Johns Quicksilver Mine), Sulfur Springs Mountain, Vallejo, Solano County, California, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 681675 |
| Long-form Identifier: | 1:3:681675:9 |
| GUID (UUID V4): | a6b6d04e-9a49-47aa-97cc-dc88cab637c0 |
| Nearest other occurrences of Serpentine Subgroup |
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| 4.6km (2.9 miles) | ⓘHastings Mine, Sulfur Springs Mountain, Vallejo, Solano County, California, USA |
| 34.7km (21.6 miles) | ⓘArroyo Del Carro prospect, Clayton, Contra Costa County, California, USA |
| 36.1km (22.4 miles) | ⓘUnnamed Asbestos prospects [1] (Prospects East of Russellman), North Peak, Mount Diablo (Mt Diablo), Clayton, Contra Costa County, California, USA |
| 38.7km (24.1 miles) | ⓘMount Diablo Mine, Mount Diablo (Mt Diablo), Clayton, Contra Costa County, California, USA |
| 39.6km (24.6 miles) | ⓘUnnamed Asbestos prospect [2], North Peak, Mount Diablo (Mt Diablo), Clayton, Contra Costa County, California, USA |
| 39.6km (24.6 miles) | ⓘPerkins Canyon prospect [1], North Peak, Mount Diablo (Mt Diablo), Clayton, Contra Costa County, California, USA |
| 40.4km (25.1 miles) | ⓘSoda Valley, Spanish Flat, Napa County, California, USA |
| 42.4km (26.3 miles) | ⓘMaillard Ranch occurrence [2], San Geronimo, Marin County, California, USA |
| 42.8km (26.6 miles) | ⓘMassa Hill Mine, Vonsen Ranch, Marin County, California, USA |
| 45.4km (28.2 miles) | ⓘFort Point, San Francisco, San Francisco County, California, USA |
| References |
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