| Locality type: | Mine |
| Classification |
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| Commodity: | Manganese (commodity) |
| Data |
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| Commodity Data: | Click here to view Manganese (commodity) data |
| Locality Data: | Click here to view Unnamed Mn mine [4], Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1202347 |
| Long-form Identifier: | 1:3:1202347:5 |
| GUID (UUID V4): | 0 |
| Nearest other deposits of Manganese (commodity) |
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| 1.0km (0.6 miles) | ⓘUnspecified Mn occurrence [6], Pine Flat, Jimtown, Castle Rock Springs area, West Mayacmas Mining District, Sonoma County, California, USA |
| 6.6km (4.1 miles) | ⓘUnnamed Mn occurrence [1], The Geysers, West Mayacmas Mining District, Sonoma County, California, USA |
| 12.1km (7.5 miles) | ⓘUnnamed Mn occurrence [3], Black Oaks, West Mayacmas Mining District, Sonoma County, California, USA |
| 12.1km (7.5 miles) | ⓘUnnamed Mn occurrence [2], Black Oaks, West Mayacmas Mining District, Sonoma County, California, USA |
| 21.3km (13.2 miles) | ⓘUnnamed Mn prospect [5], Venado, Coast Range, Sonoma County, California, USA |
| 52.0km (32.3 miles) | ⓘUnnamed Cu-Mn occurrence [1], Red Mountain, Red Mountain Mining District, Mendocino County, California, USA |
| 53.2km (33.0 miles) | ⓘDillon and Seefeldt Manganese Mine, Stewarts Point, Sonoma County, California, USA |
| 62.9km (39.1 miles) | ⓘPetaluma-Point Reyes Road Mn occurrence, Novato, Marin County, California, USA |
| 63.9km (39.7 miles) | ⓘMazza prospect (Mazza Ranch prospect), Novato, Marin County, California, USA |
| 72.8km (45.2 miles) | ⓘKnutte Mine (Knutte deposit), Novato, Marin County, California, USA |