Mine detail: La Libertad

Previously called 'Jacks 7xBelt'

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Location

Lat / long:

35.57135, -120.89931

Resource(M)

Primary:	Mercury
Ore:	Cinnabar
Gangue:	Calcite, Pyrite, Quartz, Stibnite
Orebody form:	PIPELIKE
Discovery year:	1901

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
Production years:	1901 - 1904, 1907, 1910, 1915 - 1917, 1932, 1934 - 1935, 1937 - 1942, 1947 - 1948, 1952, 1954

Geology

Host rock:	Franciscan Complex
Host type:	Serpentinite
Structure:	Local Cross Fractures
Alteration processes:	Silica Carbonate Alteration Of Serpentine

References

MRDS	M055764
DEP	10040885
Reference	{Deposit:: HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252}{Deposit:: ECKEL, E. B., YATES, R. G., AND GRANGER, A. E., 1940, QUICKSILVER DEPOSITS IN SAN LUIS OBISPO COUNTY AND SOUTHWESTERN MONTEREY COUNTY, CALIFORNIA: USGS BULL. 922 - R, P. 515 - 580}{Deposit:: BAILEY, E. H., USGS, PERSONAL FILES}{Deposit:: BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG BULL. 78, 389 P.}{Deposit:: 5) FRAKNE, H.A., 1935, MINES AND MINERAL RESOURCES OF SAN LUIS OBISPO COUNTY, CALIF.: CJMG, V. 31, P. 434-455}{Deposit:: 6) RANSOME, A.L. AND KELLOGG, J.L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG, V. 35, P. 353-486}{Production:: USBM DATA}
Reporter	Peterson, Jocelyn A.