Mine detail: El Cajon

Previously called 'GoughMathews'

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Location

Lat / long:

36.56688, -120.86738

Resource(M)

Primary:	Mercury
Ore:	Cinnabar
Gangue:	Chalcedony, Pyrite, Quartz
Orebody form:	IRREGULAR
Discovery year:	1955

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Production years:	1956 - 1957
First production started:	1955

Geology

Structure:	Nw Trending - Ne Dipping Fault Zone
Alteration processes:	Induration Of Sandstone , Hydrothermal Alteration

References

MRDS	M055821
DEP	10040929
Reference	{Deposit:: BAILEY, E. H., U.S.G.S., PERSONAL FILES}{Deposit:: AVERILL, C. V., 1947, MINES AND MINERAL RESOURCES OF SAN BENITO COUNTY, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 43, P. 41 - 60}{Deposit:: HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252}{Production:: USBM DATA}
Reporter	Peterson, Jocelyn A.