The Seeley Group is a chromium mine located in San Luis Obispo county, California at an elevation of 2,520 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 2,520 Feet (768 Meters)
Commodity: Chromium
Lat, Long: 35.37139, -120.67611
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Seeley Group MRDS details
Site Name
Primary: Seeley Group
Secondary: Claims: Central
Secondary: Climax Creek
Secondary: Crown Point
Secondary: Outpost No, 1 and No.2
Secondary: Ore Bag
Commodity
Primary: Chromium
Location
State: California
County: San Luis Obispo
Land Status
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Owner Name: San Luis Mining Co.
Home Office: San Luis Obispo, CA
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1885
Year Last Production: 1955
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges
Physiographic Detail: Santa Lucia Range
Mineral Deposit Model
Not available
Orebody
Form: IRREGULAR
Structure
Type: L
Description: Volc. And Sed. Rocks Are Folded Into A Syncline Which Is Roughly Symmetric About Ridge Crest.
Alterations
Alteration Type: L
Alteration Text: Serpentinized Dunite
Rocks
Name: Dunite
Role: Host
Age Type: Host Rock Unit
Age Young: Late Jurassic
Analytical Data
Analytical Data: MILLING ORE AVG. 11.5% CR2O3
Analytical Data: CONCENTRATES AVG. 45.6 % CR2O3
Materials
Ore: Chromite
Comments
Comment (Deposit): TWO PRODUCTIVE ORE ZONES WERE DISCOVERED: WESTERN ORE BODY, TRENDING N 60 W AND UP TO 50 FT. WIDE ; THE EASTERN ORE BODY, TRENDING N 65 W AND UP TO 10 FT WIDE.
Comment (Commodity): ANALYTICAL DATA FROM 1950'S PRODUCTION.
Comment (Production): APPROX. 500-600 TONS ORE MINED DURING WWI, BUT LITTLE WAS SHIPPED. TOTAL PROD. CLOSE TO 1950'S FIGURES.
Comment (Workings): WORKINGS ON MOST CLAIMS CONSIST OF OPEN CUTS, PITS AND DRIFTS NOW MOSTLY CAVED (1975).
Comment (Geology): THIS DEPOSIT OCCURS IN AN ELONGATE NW-SE TRENDING ULTRAMAFIC BODY EXPOSED FOR 16 KM ON THE CREST OF THE MAIN RIDGE OF THE SANTA LUCIA RANGE
Comment (Location): MINE MARKED IN SW 1/4 OF SECT. 27, T. 29 S., R. 12 E., USED AS LOCATION POINT FOR THIS GROUP.
References
Reference (Deposit): STINSON, M. C., 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED
Reference (Production): CDMG MINERAL PROP. REPORT, UNPUBLISHED
Reference (Deposit): SMITH, C. T. AND GRIGGS, A. B., 1944, CHROMITE DEPOSITS NEAR SON LUIS OBISPO COUNTY, CA., USGS BULL 945-B, PP. 42-43.
California Gold
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.
