Black Oak

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

Name: Black Oak  

State:  California

County:  El Dorado

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.


Satelite image of the Black Oak

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

"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.