The Brandon is a chromium mine located in El Dorado county, California at an elevation of 719 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: 719 Feet (219 Meters)
Commodity: Chromium
Lat, Long: 38.56583, -120.93417
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.
Brandon MRDS details
Site Name
Primary: Brandon
Commodity
Primary: Chromium
Tertiary: Platinum
Tertiary: Palladium
Tertiary: Iridium
Tertiary: Ruthenium
Tertiary: Rhodium
Location
State: California
County: El Dorado
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Robert D. Domecq, Et Al.
Production
Year: 1918
Material type: ORE
Description: Ap_Grade: ^45% Cr2o3
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1918
Year Last Production: 1918
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Model Name: Podiform chromite (minor)
Orebody
Form: PODS
Structure
Type: L
Description: Shearing
Alterations
Alteration Type: L
Alteration Text: Ultramafic Rocks Are Serpentinized
Rocks
Name: Peridotite
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic
Name: Peridotite
Role: Associated
Age Type: Associated Rock
Age Young: Late Jurassic
Name: Peridotite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Jurassic
Analytical Data
Analytical Data: RH=7 PPB.
Analytical Data: RU=230 PPB
Analytical Data: IR=200 PPB
Analytical Data: PD=186 PPB
Analytical Data: 1 PGE ANALYSIS: PT=130 PPB
Materials
Ore: Chromite
Comments
Comment (Workings): 3 OPEN CUTS, 10-25 FT LONG.
Comment (Location): ON RIDGE BETWEEN HUNGRY HOLLOW AND INDIAN CREEKS. NO MINE SHOWN ON TOPO MAP; LOCATION GIVEN IS FOR PGE SAMPLE SITE LOCATION
Comment (Development): OPERATED BY BRANDON BROTHERS DURING WWI
Comment (Deposit): CONTACT OF CHROMITE PODS AND DUNITE IS SHEARED
Comment (Production): 4 CARLOADS WERE PRODUCED IN 1918. MINE HAS BEEN IDLE SINCE THEN AND WORKINGS ARE CAVED. A SMALL AMOUNT OF CHROMITE REMAINS IN DEEPEST PIT
References
Reference (Deposit): CLARK, W.B., AND CARLSON, D.W., 1956, MINES AND MINERAL RESOURCES OF EL DORADO COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY V. 52, NO. 4, P. 465.
Reference (Deposit): LINDGREN, WALDEMAR, 1894, SACRAMENTO FOLIO, CALIFORNIA: U.S. GEOLOGICAL SURVEY GEOLOGIC ATLAS OF THE UNITED STATES, FOLIO 5, SCALE 1:125,000.
Reference (Deposit): BRADLEY, W.W., HUGUENIN, EMILE, LOGAN, C.A., TUCKER, W.B., AND WARING, C.A., 1918, MANGANESE AND CHROMIUM IN CALIFORNIA: CALIFORNIA STATE MINING BUREAU BULLETIN 76, P. 132.
Reference (Deposit): CATER, F.W., JR., RYNEARSON, G.A., AND DOW, D.H., 1951, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 134, PT. 3, CH. 4, P. 122-123, 164, PL. 8.
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.
