| Locality type: | Mine |
| Classification |
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| Species: | 'Silica' (not an IMA approved species) |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Silica data |
| Locality Data: | Click here to view Unnamed Silica mine [1], Nortonville, Contra Costa County, California, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 716377 |
| Long-form Identifier: | 1:3:716377:7 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Silica |
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| 0.9km (0.5 miles) | ⓘRoberts Sand Company Mine (Black Diamond Mine), Nortonville, Contra Costa County, California, USA |
| 1.9km (1.2 miles) | ⓘAntioch Mine, Somersville, Contra Costa County, California, USA |
| 2.2km (1.4 miles) | ⓘPittsburg Sand Company Mine, Somersville, Contra Costa County, California, USA |
| 6.1km (3.8 miles) | ⓘAntioch-Marchio prospect, Antioch, Contra Costa County, California, USA |
| 17.0km (10.6 miles) | ⓘSilica Company of California Mine, Brentwood, Contra Costa County, California, USA |
| 21.9km (13.6 miles) | ⓘByron plant, Byron, Contra Costa County, California, USA |
| 40.9km (25.4 miles) | ⓘUnknown Silica prospect [1], Tesla, Livermore Mining District (Tesla District), Alameda County, California, USA |
| 76.0km (47.3 miles) | ⓘHammond occurrence (Silica No. 1), Copper Mountain, Black Wonder Mining District, Stanislaus County, California, USA |
| 78.0km (48.5 miles) | ⓘJ. J. Cummings and Thomas Wolf property, Patterson, Stanislaus County, California, USA |
| 89.6km (55.7 miles) | ⓘPacific Clay Products pit, Camanche, Camanche Mining District, Calaveras County, California, USA |
| References |
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