Zaca

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

Name: Zaca  

State:  California

County:  Alpine

Elevation: 6,155 Feet (1,876 Meters)

Commodity: Gold

Lat, Long: 38.66528, -119.70611

Map: View on Google Maps

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.


Satelite image of the Zaca

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

"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.