The Zaca is a gold mine located in Alpine county, California at an elevation of 6,155 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 6,155 Feet (1,876 Meters)
Commodity: Gold
Lat, Long: 38.66528, -119.70611
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Zaca MRDS details
Site Name
Primary: Zaca
Secondary: Advance
Secondary: Colorado No 2
Secondary: Tarshish
Commodity
Primary: Gold
Secondary: Silver
Secondary: Copper
Secondary: Lead
Secondary: Zinc
Tertiary: Tungsten
Tertiary: Antimony
Location
State: California
County: Alpine
District: Monitor - Mogul
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Siskon Corp. (Owner) , Box 889 , Reno, Nv.; Claude Lovestedt (Leased To), Box 265 , Minden, Ne
Years: 1977 -
Production
Year: 1968
Year: 1967
Time Period: 1965 - 1967
Year: 1961
Time Period: 1941 - 1961
Year: 1939
Time Period: 1938 - 1939
Year: 1936
Time Period: 1934 - 1936
Year: 1920
Time Period: 1912 - 1920
Year: 1888
Time Period: 1879 - 1888
Year: 1964
Material type: ORE
Year: 1963
Year: 1962
Year: 1940
Year: 1937
Year: 1933
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Hydrothermal Vein
Operation Type: Unknown
Discovery Year: 1857
Years of Production:
Organization:
Significant: Y
Deposit Size: M
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silicification
Rocks
Not available
Analytical Data
Analytical Data: 1867 ASSAY - $150/TON AU, $800/TON AG
Materials
Ore: Tetrahedrite
Ore: Enargite
Ore: Sphalerite
Ore: Chalcopyrite
Ore: Argentite
Ore: Pyrite
Ore: Silver
Ore: Gold
Gangue: Sanidine
Gangue: Quartz
Gangue: Rhodochrosite
Comments
Comment (Production): ONE OF THE FIRST MINES LOCATED IN THE COUNTY ( 1857 ). TWO STRIKES IN 1867 & 1870 STIMULATED PRODUCTION. IN 1879 CONCENTRATES AVERAGED $585/TON. SEVERAL THOUSAND DOLLARS WORTH OF ORE TAKEN OUT IN 1912 . CONTINUOUS PRODUCTION FROM 1931 - 1941 . FOR MORE COMPLETE ACCT OF PRODUCTION FROM 1920 - 1968 , SEE CLARK, 1977 . OFTEN ORE WAS 1ST CONCENTRATED
Comment (Deposit): VEINS, STRINGERS, NOT WELL DEFINED POCKETS
Comment (Workings): SEVERAL ADITS THOUSANDS OF FEET LONG. EXTENSIVE XCUT DRIFTS & WINZES, STOPES. SEE EVANS ETAL, 1966 .
Comment (Commodity): ORE OCCURRED IN BUNCHES AND WAS ASSOCIATED W PINK & BLACK MANGANESE MINERALS. BENSTRON, CITED IN CLARK, 1977 , FELT THAT HUBNERITE WAS AN INDICATOR OF HIGH GRADE ORE. TETRAHEDRITE IS SILVER RICH.
Comment (Location): UTM ACC. SW 1/4 31
Comment (Geology): DEPOSIT IN SILICIFIED, ALTERED RX WHICH ARE 1) DARK GRAY FINELY PORPHYRITIC ANDESITIC BASALT; 2) WHITE AND YELLOW TO REDDISH - BROWN RHYOLITE LOCALLY SHOWING ABUNDANT THIN RIBBONS OF GRAY QUARTZ, AND 3) SOME BLOCKS OF WHITISH - GRAY LAPILLI - TUFF BRECCIA, WHICH APPARENTLY HAVE BEEN CAUGHT UP IN THE RHYOLITE DURING ITS INTRUSION. INTRUSIVE CONTACT BETWEEN 1 & 2 EXPOSED AT COLORADO ADIT PORTAL, & PARTS OF COLORADO, ADVANCE AND UPPER ADVANCE ADITS. LOCALLY CONTACTS SHEARED "RIBS" OF RHYOLITE & RHYOLITE BRECCIA, TO 50 FT THICK OUTCROP ON MONITOR PASS ROAD. UNDERGROUND, 2 IS GRAY TO WHITE AND CONTAINS DISSEMINATED SULFIDE MINERALS. MINERALIZED AREAS OCCUR IN SOFT CLAY POCKETS A FEW IN TO SEVERAL FT IN LONGEST DIMENSION PARALLEL TO AND X CUTTING QTZ BANDED ZONES AND IN SOFT FRIABLE CORES OF ANTICLINAL STRUCTURES. SINCE 1960 THESE CORES HAVE PRODUCED THE HIGH - GRADE ORE. RHYOLITE CAVITIES CONTAIN GRAY EVHEDRAL QTZ XTLS UP TO 3/4 IN LONG, ON WHCH XTLS OF RHODOCHROSITE, PYRITE, HUBNERITE &
Comment (Geology): OTHER AG - BEARING SULFITES MAY HAVE DEVELOPED.
Comment (Deposit): CONSOLIDATION OF 2 ADJACENT MINES, ADVANCE AND COLORADO. IN 1930 S NAMED ZACA. ; INFO.SRC : 1 PUB LIT
References
Reference (Deposit): CLARK, W. B., 1977 , MINES AND MINERAL RESOURCES OF ALPINE COUNTY, CALIF: CDMG COUNTY REPT NO 8 , P. 22 - 27 .
Reference (Deposit): EVANS, J. R., ED, 1966 , GUIDEBOOK ALONG THE EAST - CENTRAL FRONT OF THE SIERRA NEVADA: GEOL. SOCIETY OF SACRAMENTO, ANN. FIELD TRIP, JUNE, 1966 , P
Reference (Deposit): TUCKER & SAMPSON
Reference (Production): CLARK, 1977
California Gold
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.
