| Location: | Alameda County, California, United States, North America |
| Lat / long: | 37.59269, -121.60714 |
| dep_id: | 10027968 |
| mrds_id: | M004666 |
| Commodity type: | metallic |
| Trace mineral: | Manganese |
| Operation type: | Unknown |
| Production size: | No production occurred |
| Development status: | Occurrence |
| Reporter: | Von Dohlen, E.; Albers, J., Gere, W. |
| Structure: | Ore Bodies In A Lens Of Massive Folded Into An Anticline Which Pitches To The South And The Main Body Of The Lens Lies On The Sw Limb Of The Fold Dipping 25 Degrees To The West. |
| References: |
- Deposit:: CALIF. JOUR. MINES & GEOL. V. 46, NO. 2, APRIL 1950, P. 344, PL. 58
- Deposit:: DOM BULL. 125, P.100
- Deposit:: BULL. 152, P.21-22
- Deposit:: BULL. 140 PL. 1 (GEOLOGY) P. 66
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