| Locality type: | Deposit |
| Classification |
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| Species: | 'Psilomelane' (not an IMA approved species) |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals: |
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| Associates: | Pyrolusite
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| Data |
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| Mineral Data: | Click here to view Psilomelane data |
| Locality Data: | Click here to view Red Rock Island deposit, Richmond, Contra Costa County, California, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 646712 |
| Long-form Identifier: | 1:3:646712:8 |
| GUID (UUID V4): | c3ca0bba-1524-4e90-9f57-3b30b7d7de80 |
| Nearest other occurrences of Psilomelane |
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| 20.1km (12.5 miles) | ⓘMaillard Ranch occurrence [2], San Geronimo, Marin County, California, USA |
| 22.0km (13.6 miles) | ⓘKnutte Mine (Knutte deposit), Novato, Marin County, California, USA |
| 65.4km (40.7 miles) | ⓘPowers prospect, Spanish Flat, Napa County, California, USA |
| 69.6km (43.2 miles) | ⓘDyer prospect, Altamont, Alameda County, California, USA |
| 75.2km (46.8 miles) | ⓘKelly Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA |
| 77.6km (48.2 miles) | ⓘCamp 9 deposit (Camp 9 Merchant; Cummings), Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA |
| 78.4km (48.7 miles) | ⓘNelson Bailey Mine (Nelson lease; Bailey Mine; Newhall Mine), Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA |
| 78.6km (48.8 miles) | ⓘAlameda Company No. 39 prospect (Alameda County #39), Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA |
| 80.3km (49.9 miles) | ⓘNewman Estacia property, Cedar Mountain, Cedar Mountain Mining District, Alameda County, California, USA |
| 80.5km (50.0 miles) | ⓘDewhirst Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA |
| References |
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