| Locality type: | Deposit |
| Classification |
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| Species: | Pyrolusite |
| Formula: | Mn4+O2 |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals: |
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| Associates: | Psilomelane
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| Data |
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| Mineral Data: | Click here to view Pyrolusite 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: | 646713 |
| Long-form Identifier: | 1:3:646713:5 |
| GUID (UUID V4): | 4b7b3099-fff4-4eae-984e-6fc393e8c3b3 |
| Nearest other occurrences of Pyrolusite |
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| 10.9km (6.7 miles) | ⓘMarin County No. 25 Mine (Marin County No. 25), Fort Baker, Marin 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 |
| 80.7km (50.2 miles) | ⓘCorral Hollow Manganese deposits, Corral Hollow, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA |
| 81.1km (50.4 miles) | ⓘBlack Jack Mine, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA |
| 81.3km (50.5 miles) | ⓘTaylor and Pitcher Mine, Tesla, Livermore Mining District (Tesla District), Alameda County, California, USA |
| References |
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