| Location: | Alameda County, California, United States, North America |
| Lat / long: | 37.52685, -121.53935 |
| dep_id: | 10027988 |
| mrds_id: | M004695 |
| Commodity type: | metallic |
| Major mineral: | Manganese |
| Operation type: | Unknown |
| Production size: | Small ammount of material produced |
| Development status: | Producer |
| Reporter: | Gere, W., Von Dohlen, E.; Albers, J. |
| References: |
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