USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
California · San Luis Obispo County
Norcross Mine
Unconfirmed Chromium Mixed Underground / Surface
Key facts
- State
- California
- County
- San Luis Obispo
- Development status
- Past Producer
- Mine type
- Mixed underground / surface
- Primary commodity
- Chromium
- Verification
- Unconfirmed
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
A former Cr-Fe (trace) mine located 1.5 km (4,800 feet) SSW of Cerro Alto. Mineralization is hosted in serpentinite.
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: Surface, Underground · work_type
Verification
Unconfirmed
Source records support underground workings, but UndergroundMines has not yet independently verified this mine.
Why it's listed
Source records document both underground and surface mining.
History & operations
Historical record
- Development status: Past Producer
Operators / organizations
- Del Norte Chrome Ltd. · Source-reported owner · 1987
Commodities & minerals
Reported minerals
- Aragonite
- Calcite
- Chromite
- Magnesiochromite
- Serpentine
- Talc
- Tremolite
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: 91918
Supports:
- locality identity
- reported minerals (6)
A Mindat locality match does not by itself establish underground workings.
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