| Location: | Alameda County, California, United States, North America |
| Lat / long: | 37.51324, -121.57769 |
| dep_id: | 10109086 |
| mrds_id: | M004700 |
| Commodity type: | metallic |
| Major mineral: | Manganese |
| Operation type: | Unknown |
| Production size: | Small ammount of material produced |
| Development status: | Producer |
| Reporter: | Gere, W., Killman, K.; Albers, J. |
| References: |
- Deposit:: CALIF. JOUR. MINES & GEOL. V. 46, NO. 2, APRIL 1950, P.345, PL. 58
- Deposit:: DOM BULLS. 125, P.101
- Deposit:: BULL. 152, P.26
- Deposit:: BULL. 140 , PL. 1 (GEOLOGY)
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