Mine detail: New Almaden

Previously called 'Santa MarianaSan Pedro - Almaden.HarryVelascoCentral StopeVictoriaNorth RandolSouth RandolSan FranciscoCora Blanca'

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Location

Lat / long: 37.17936, -121.8427

Resource(M)

Primary: Mercury
Ore: Cinnabar, Metacinnabar
Gangue: Dolomite, Quartz
Orebody form: IRREGULAR
Discovery year: 1845

Production

Operation type: Unknown
Production size: Large
Development status: Past Producer
First production started: 1845

Geology

Host rock:Franciscan Complex
Host type:Serpentinite,Tuff
Structure:Nw, Local Anticline, Tension Fractures
Tectonic:Franciscan Melange
Alteration processes:Silica Carbonate Alteration Of Serpentine

References

MRDSM055605
DEP10040742
Reference{Deposit:: BAILEY, E. H. AND EVERHART, D. L., 1964, GEOLOGY AND QUICKSILVER DEPOSITS OF THE NEW ALMADEN DISTRICT, SANTA CLARA COUNTY, CALIFORNIA: U.S.G.S. PROF. PAPER. 360, 206 P.}{Deposit:: HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252}{Deposit:: BAILEY, E. H., USGS, PERSONAL FILES}{Deposit:: RANSOME, A. L., AND KELLOGG, J. L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 35, P. 353 - 486}{Deposit:: 5) BEDFORD, R.H. AND RICKER, S., 1950, INVESTIGATION OF THE NEW ALMADEN MERCURY MINE, SANTA CLARA COUNTY, CALIF.: USBM RI 4697}{Deposit:: 5) BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG BULL. 78, 389 P.}{Deposit:: 7) DAVIS, F.F. AND JENNING, C.W., 1954, MINES AND MINERAL RESOURCES OF SANTA CLARA COUNTY, CALIF.: CJMG, V. 50, P. 342-354}{Deposit:: 8) FORSTNER, W., 1908, QUICKSILVER RESOURCES OF CALIFORNIA: CDMG BULL. 27, 270 P.}{Deposit:: 9) FRANKE, H.A., 1930, SANTA CLARA COUNTY, MINING IN CALIFORNIA: REPT OF THE STATE MINERALOGIST, V. 26, P. 26-33}{Deposit:: 1951 DIREXPL DMEA, FOUND MINOR MINERALIZATION BUT NOT OF ECONOMIC SIGNIFICANC}{Production:: USBM UNPUB DATA}
ReporterPeterson, Jocelyn A.