Mine detail: Spragg Mine

Previously called 'Mason Valley Mines'

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Location

Lat / long:

38.95185, -119.22931

Resource(M)

Primary:	Copper
Ore:	Chalcopyrite
Orebody form:	IRREGULAR

Production

Operation type:	Unknown
Deposit type:	Replacement
Production size:	Small
Development status:	Past Producer

Geology

Associated type:	Diorite,Rhyolite
Structure:	Numerous Faults

References

MRDS	M035866
DEP	10037693
Reference	MARCH 16 , 1907 , MINING AND SCIENTIFIC PRESS, P. 349
Reporter	Fiebelkorn, J. B. (Stewart, J. H.)