The Darrington Mine is a chromium mine located in El Dorado county, California.
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
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.
Darrington Mine MRDS details
Site Name
Primary: Darrington Mine
Secondary: Gurney
Secondary: Holbrook
Secondary: Mcguire
Commodity
Primary: Chromium
Location
State: California
County: El Dorado
District: Flagstaff Hill Area
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Jerume Lewis Et. Al., Sacramento, Ca.
Production
Year: 1944
Material type: ORE
Description: Ap_Grade: ^38.5% Cr2o3, Cr:Fe Ratio 1.61
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
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
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Serpentinization
Rocks
Not available
Analytical Data
Analytical Data: "TYPICAL" ORE ASSAYED 11.34, 13.76, 16.65% CR2O3
Materials
Ore: Chromite
Comments
Comment (Geology): DEPOSIT LOCATED NEAR SOUTHERN END OF ELONGATED, N-S TRENDING ULTRAMAFIC MASS APPROX 5 MI LONG AND 1 MI WIDE, WHICH FORMS FLAGSTAFF HILL. THE DEPOSIT CONSISTS OF TWO SERPENTINIZED DUNITE MASSES SEPARATED BY PYROXENITE. THE DIMENSIONS FOR THE LARGER OF THE TWO, THE UPPER OR EASTERN ORE ZONE, ARE GIVEN ABOVE. THE WEST OR LOWER ZONE LIES ALONG THE CONTACT WITH UNDIVIDED METAMORPHICS AND APPEARS TO BE OFFSET BY NUMEROUS SMALL FAULTS AT NORTH END. THE LOWER ORE ZONE MAY BE 30 FT X 30 FT X 30 FT IN SIZE.
Comment (Reserve-Resource): HIGH IRON CONTENT OF ORE MAY DISCOURAGE FURTHER DEVELOPMENT OF DEPOSIT.
Comment (Workings): MINE CONSISTS OF 2 GROUPS OF WORKINGS; UPPER CONSISTS OF 2 OPEN CUTS, SEVERAL ADITS AND 2 SHAFTS; LOWER CONSISTS OF AN OPEN CUT, 2 ADITS, A SHAFT AND SEVERAL PROSPECT PITS. ADITS AND SHAFT MAY ALL HAVE BEEN CONNECTED. MORE THAN 120 FT. OF SHAFTS AND RAISES THROUGH ORE BODY.
References
Reference (Deposit): STINSON, M.C., 1976, MINERAL PROPERTY REPORT, CDMG UNPUBLISHED REPORT.
Reference (Deposit): CDMG BULL 134, P. 150-151.
Reference (Production): CDMG BULL 134, P. 51
Reference (Reserve-Resource): CDMG BULL 134, P. 151.
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.
