USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
California · San Luis Obispo County
Seeley Group
Unconfirmed Iron Mixed Underground / Surface
Key facts
- State
- California
- County
- San Luis Obispo
- Mining district
- Cuesta Pass
- Development status
- Past Producer
- Mine type
- Mixed underground / surface
- Primary commodity
- Iron
- Verification
- Unconfirmed
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
A former Cr mine located 5.0 km (3.1 miles) N of Chorro. Mineralization is hosted in rocks of the Monterey unit (dunite). Local structures include volcanic and sedimentary rocks which are folded into a syncline that is roughly symmetrical about t…
View individual source records (2)
Every underlying record used to build the summary above, for research/verification use.
- Derived from MRDS oper_type (existing operation): Surface-Underground
- MRDS oper_type documents existing underground operation (dev_stat=Past Producer): Surface-Underground · oper_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
- San Luis Mining Co. · Historical operator · 1976
- U.S. Forest Service - Los Padres National Forest · Source-reported owner · 1976
Commodities & minerals
Reported minerals
- Chromite
- Olivine
- Pyroxene
- Serpentine
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: 91977
Supports:
- locality identity
- reported minerals (1)
A Mindat locality match does not by itself establish underground workings.
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