The Black Oak is a gold mine located in El Dorado county, California at an elevation of 2,021 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: 2,021 Feet (616 Meters)
Commodity: Gold
Lat, Long: 38.85778, -120.84722
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.
Black Oak MRDS details
Site Name
Primary: Black Oak
Commodity
Primary: Gold
Location
State: California
County: El Dorado
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
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
Type: L
Description: Struct Of Gen Area Is Of Tightly Compressed, Steeply Plunging Folds With Thrust Faults Dipping 20 To 35 E Have Disrupted Contacts And In Some Cases Localized Gold Mineralization. Main Fault Offset Vein And Ore Shoot 200 Ft Btwn. 400 And 500 Ft Level. Small Amt. Of Gold Recovered Below Fault.
Alterations
Not available
Rocks
Name: Slate
Role: Associated
Age Type: Associated Rock
Age Young: Late Jurassic
Name: Slate
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Jurassic
Analytical Data
Not available
Materials
Ore: Gold
Ore: Pyrite
Gangue: Quartz
Gangue: Calcite
Gangue: Feldspar
Comments
Comment (Workings): DEVELOPED BY EXTENSIVE CROSSCUTTING FROM 400 FT VERTICLE SHAFT. ANOTHER SHAFT TO NW, 6000 FT OF DRIFTS AND CROSSCUTS. BOTH SHAFTS CONNECTED BY CROSSCUTS.
Comment (Geology): DEPOSIT IS JUST N OF WHERE MOTHER LODE SPLIT INTO TWO BRANCHES, ONE TO N, THE OTHER TWD. THE NW VEIN IN AMPHIBOLITE SCHIST THAT LIES BETWEEN TWO BELTS OF MARIPOSA SLATE IN AREA. A STRIP OF GRAPHITIC SLATE 50 FT WIDE FORMS THE HANGING WALL. MAIN ORE SHOOT OF GOLD BEARING STRINGERS AND VEINS OF CALCITE AND QUARTZ WIDE AT N AND PINCHED OUT AT S. SHOOT FOLLOWS OR IS NEAR CONTACT BTWN. GRAPHITIC SLATE AND AMPHIBOLITE. NO ORE BELOW 500 FT LEVEL.
Comment (Deposit): IN REFERENCES SEE ALSO CLARK, DAYTON CONS ; INFO.SRC : 1 PUB LIT
Comment (Location): UTM ACC NE 1/4
Comment (Production): ACTIVE PRIOR TO 1934 , 1934 - 1942
Comment (Deposit): VEIN-BLACK OAK VEIN 250 FT E CLARK VEIN AND 100 FT TO E IS DAVENPORT VEIN ZONE
References
Reference (Deposit): CLARK, W. B., AND CARLSON, D. W., 1956 , MINES AND MINERAL RESOURCES OF EL DORADO CO., CALIF.: CALIF. JOUR. OF MINES AND GEOL., VOL. 52 , NO. 4 , PG. 409 - 411 , 488 AND PL 10 .
Reference (Deposit): LOGAN, C. A., 1935 , MOTHER LODE GOLD BELT OF CALIF.: CALIF. DIV. MINES BULL. 108 , PG. 20 - 21 .
Reference (Deposit): LOGAN, C. A., 1938 , MIN. RESOURCES OF EL DORADO CO.: CALIF. JOUR. OF MINES AND GEOL., VOL. 34 , NO. 3 , PG. 223 - 224 , 259 .
Reference (Production): CLARK ( 1956 )
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.
