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Zaca

Past Producer in Alpine county in California, United States with commodities Gold, Silver, Copper, Lead, Zinc, Tungsten, Antimony
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Production statistics
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10006821
MRDS ID C004763
Record type Site
Current site name Zaca
Alternate or previous names Advance, Colorado No 2, Tarshish

Geographic coordinates

Geographic coordinates: -119.7071, 38.66519 (WGS84)
Elevation 1876
Relative position 2 MI WNW OF HEENAN LAKE

Site location context

Political divisions (FIPS codes)

Alpine(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Heenan Lake(quadrangle 1:24,000 scale)

Smith Valley(quadrangle 1:100,000 scale)

Walker Lake(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Carson(hydrologic unit)

Carson(hydrologic accounting unit)

Central Lahontan(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Humboldt-Toiyabe National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Alpine

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 010N 021E 31,32 California

Comments on the location information

  • UTM ACC. SW 1/4 31

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Secondary
Lead Secondary
Zinc Critical Secondary
Tungsten Critical Tertiary
Antimony Critical Tertiary

Comments on the commodity information

  • 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.

Materials information

Materials Type of material
Argentite Ore
Chalcopyrite Ore
Enargite Ore
Gold Ore
Pyrite Ore
Silver Ore
Sphalerite Ore
Tetrahedrite Ore
Quartz Gangue
Rhodochrosite Gangue
Sanidine Gangue

Alteration

  • (Local) Silicification

Analytical data

Result 1867 ASSAY - $150/TON AU, $800/TON AG

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -119.7071, 38.66519
ListMap

Economic information

Ore body information

  • Depth to top 0M

Comments on the geologic information

  • 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 &
  • OTHER AG - BEARING SULFITES MAY HAVE DEVELOPED.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant Yes
Discovery year 1857

Mining district

District name Monitor - Mogul

Ownership information

  • Type Owner
    Owner Siskon Corp. (Owner) , Box 889 , Reno, Nv.; Claude Lovestedt (Leased To), Box 265 , Minden, Ne
    First year 1977

Production statistics

  • Year 1888
    Period 1879 - 1888
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 40wt-pct
  • Year 1920
    Period 1912 - 1920
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 16g/mt
  • Year 1933
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
  • Year 1936
    Period 1934 - 1936
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 11g/mt
  • Year 1937
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Copper Copper 136g/mt
    Minor Ore Silver Silver 62g/mt
  • Year 1939
    Period 1938 - 1939
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 644g/mt
  • Year 1940
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Lead Lead 407g/mt
  • Year 1961
    Period 1941 - 1961
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Copper Copper 361g/mt
  • Year 1962
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 6g/mt
  • Year 1963
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Silver Silver 101g/mt
    Minor Ore Copper Copper 226g/mt
  • Year 1964
    Material ORE
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Lead Lead 1265g/mt
  • Year 1967
    Period 1965 - 1967
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Ore Lead Lead 3614g/mt
  • Year 1968
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 3g/mt

Comments on the production information

  • 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

Workings at the site

  • Type of workings Surface/Underground
    Overall length 304.8M
    Overall width 182.88M

Comments on the workings information

  • SEVERAL ADITS THOUSANDS OF FEET LONG. EXTENSIVE XCUT DRIFTS & WINZES, STOPES. SEE EVANS ETAL, 1966 .

Reference information

Bibliographic references

  • Deposit

    CLARK, W. B., 1977 , MINES AND MINERAL RESOURCES OF ALPINE COUNTY, CALIF: CDMG COUNTY REPT NO 8 , P. 22 - 27 .

  • 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

  • Deposit

    TUCKER & SAMPSON

  • Production

    CLARK, 1977

General comments

Subject category Comment text
Deposit CONSOLIDATION OF 2 ADJACENT MINES, ADVANCE AND COLORADO. IN 1930 S NAMED ZACA. ; INFO.SRC : 1 PUB LIT
Deposit VEINS, STRINGERS, NOT WELL DEFINED POCKETS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1979 Hayden, F. (Albers, J.) U.S. Geological Survey DEPOSIT TYPE
Updater 02-OCT-1991 Mosier, Dan U.S. Geological Survey ENTERED, CHECKED HOST ROCK TYPE AND AGE, ENTERED ASSOCIATED ROCK TYPE AND AGE.
Editor 27-APR-1995 Mosier, Dan U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.