Mine detail: Black Oak

Previously called ''

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Location

Lat / long:

38.85768, -120.84824

Resource(M)

Primary:	Gold
Ore:	Gold, Pyrite
Gangue:	Calcite, Feldspar, Quartz

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Past Producer
Production years:	1934 - 1942

Geology

Host type:	Slate
Associated rock:	Mariposa Formation
Associated type:	Slate
Structure:	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.

References

MRDS	C008022
DEP	10007027
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 .}{Deposit:: LOGAN, C. A., 1935 , MOTHER LODE GOLD BELT OF CALIF.: CALIF. DIV. MINES BULL. 108 , PG. 20 - 21 .}{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 .}{Production:: CLARK ( 1956 )}
Reporter	Mateik, R.; Albers, John P., Mosier, Dan