USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
California · Alameda County
Berkeley Hills
Unconfirmed Sulfur-Pyrite Underground
Key facts
- State
- California
- County
- Alameda
- Development status
- Past Producer
- Mine type
- Underground
- Primary commodity
- Sulfur-Pyrite
- Verification
- Unconfirmed
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
A former S-pyrite-Cu-Pb occurrence/mine located in sec. 36, T1N, R4W, MDM, 1.8 km (1.1 miles; 6,000 feet) NNE of Berkeley proper (near Euclid Avenue and Cordonices Creek). Operated during the period 1925 to 1929. MRDS database stated accuracy for this …
View individual source records (2)
Every underlying record used to build the summary above, for research/verification use.
- USGS MRDS working type: Underground
- MRDS work_type documents underground workings: Underground · work_type
Verification
Unconfirmed
Source records support underground workings, but UndergroundMines has not yet independently verified this mine.
Why it's listed
USGS source data documents underground workings for this record.
History & operations
Historical record
- Development status: Past Producer
Commodities & minerals
Reported minerals
- Galena
- Pyrite
- commodity:Iron pyrite
- commodity:Lead
- Galena
- Pyrite
- Rhyolite
Access & recent conditions
- Land
- unknown
Community reports
No community field reports yet.
I Visited This MineSources & evidence
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 73352
Supports:
- locality identity
- reported minerals (5)
A Mindat locality match does not by itself establish underground workings.