The Seiad Creek is a chromium mine located in Siskiyou county, California at an elevation of 3,323 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: 3,323 Feet (1,013 Meters)
Commodity: Chromium
Lat, Long: 41.90972, -123.14278
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.
Seiad Creek MRDS details
Site Name
Primary: Seiad Creek
Secondary: Mountain View
Secondary: Reddy No. 2
Secondary: Teddy Chrome
Secondary: Red Hills
Secondary: Valley View
Commodity
Primary: Chromium
Tertiary: Platinum
Tertiary: Palladium
Tertiary: Iridium
Tertiary: Ruthenium
Tertiary: Rhodium
Location
State: California
County: Siskiyou
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
Type: Surface/Underground
Ownership
Owner Name: Rustless Mining Co.
Years: 1944 -
Owner Name: Kangaroo Mountain Chrome Co.
Years: 1944 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1914
Year Last Production: 1945
Discovery Year: 1915
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Klamath Mountains
Mineral Deposit Model
Model Name: Podiform chromite (minor)
Orebody
Form: MASSIVE LENSES AND STREAKS, DISSEMINATED
Structure
Type: L
Description: 3 Sets Of Complex Faults And Joints With Little Displacement
Alterations
Alteration Type: L
Alteration Text: Dunite Is Partly Serpentinized
Rocks
Name: Peridotite
Role: Associated
Age Type: Associated Rock
Age Young: Late Triassic
Name: Peridotite
Role: Associated
Age Type: Host Rock
Age Young: Late Triassic
Name: Peridotite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Triassic
Analytical Data
Analytical Data: RH=6-22 PPB. CR:FE=2.2-2.43:1
Analytical Data: RU=100-200 PPB
Analytical Data: IR=20 PPB
Analytical Data: PD=<1-34 PPB
Analytical Data: 7 PGE ANALYSES: PT=<1-120 PPB
Materials
Ore: Chromite
Gangue: Tremolite
Gangue: Talc
Gangue: Magnesite
Gangue: Chlorite
Gangue: Uvarovite
Gangue: Anthophyllite
Comments
Comment (Deposit): RECORD W017822 HAS BEEN MERGED AND DELETED.
Comment (Location): UNSURVEYED. IN KLAMATH NATIONAL FOREST. BETWEEN FORKS IN SEIAD CREEK
Comment (Development): MINE WAS IDLE BETWEEN WWI AND WWII
Comment (Deposit): MASSIVE ORE HAS BEEN MINED OUT. ORE OCCURRED IN 3 MAIN ZONES
Comment (Workings): 2 ADITS, NUMEROUS TRENCHES, 30 DIAMOND DRILL HOLES
Comment (Geology): DUNITE IS COMPOSED OF 95% OLIVINE AND 5% ENSTATITE. COUNTRY ROCK IS SCHISTOSE AND DUNITE IS FOLIATED.
Comment (Deposit): Discovery Year: WWI
References
Reference (Deposit): WELLS, F.G., AND CATER, F.W., JR., 1950, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 134, PT. 1, CH. 2, P. 118.
Reference (Deposit): WELLS, F.G., SMITH, C.T., RYNEARSON, G.H., AND LIVERMORE, J.S., 1949, CHROMITE DEPOSITS NEAR SEIAD AND MCGUFFY CREEKS, SISKIYOU COUNTY, CALIFORNIA: U.S. GEOLOGICAL SURVEY BULLETIN 948-B, P. 48-52.
Reference (Deposit): WEIBELT, F.J., AND RICKER, SPANGLER, 1949, INVESTIGATION OF THE SEIAD CREEK CHROMITE DEPOSITS, SISKIYOU COUNTY, CALIF.: U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS 4619, 28 P.
Reference (Deposit): CARLSON, C.A., AND OTHERS, 1985, ANALYSES FOR PLATINUM-GROUP ELEMENTS IN SAMPLES FROM PODIFORM CHROMITE DEPOSITS, CALIFORNIA AND OREGON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 85-442, 14 P.
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.
