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  3. Mineral Resource Data System (MRDS)

Zantgraf

Past Producer in El Dorado county in California, United States with commodities Gold, Lead
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Land status
  13. Production statistics
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10006822
MRDS ID C007316
Record type Site
Current site name Zantgraf
Alternate or previous names Montauk Consolidated Zentgraf

Geographic coordinates

Geographic coordinates: -121.09659, 38.79683 (WGS84)
Relative position 4 1/2 MI. SW OF PILOT HILL

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pilot Hill(quadrangle 1:24,000 scale)

Sacramento(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Fork American(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

USBR(Federal land areas administered by USBR)

Geographic areas

Country State County
United States California El Dorado

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 011N 008E 16,21 California

Comments on the location information

  • UTM ACC. SW 1/4 SW 1/4 1 MI. S OF RATTLESNAKE BRIDGE ON E SIDE OF AMERICAN RIVER

Commodities

Commodity Importance
Gold Primary
Lead Tertiary

Comments on the commodity information

  • FREE GOLD AND AURIFEROUS PYRITE

Materials information

Materials Type of material
Galena Ore
Gold Ore
Pyrite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -121.09659, 38.79683
ListMap

Economic information

Ore body information

  • Strike NW
    Dip 45 SW
    Thickness 1.83M
    Depth to top 0M

Comments on the geologic information

  • SEVERAL SUBPARALLEL VEINS DIP 38 - 50 SW, ACCOMPANIED BY DIORITE DIKES. AMPHIBOLITE LIES TO E. MOST WORKINGS IN GRANODIORITE IN MAIN VEIN, ZANTGRAF WHICH IS FROM 2 - 6 FT. THICK. ORE SHOOT STOPED FROM 300 FT. LEVEL TO SURFACE FOR 900 FT. DISTANCE. 2ND ORE SHOOT ON LOWER LEVELS. 3RD ORE SHOOT 900 FT. NW OF MAIN SHAFT.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Land status

Ownership category Federal

Production statistics

  • Year 1901
    Period 1880 - 1901
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 10g/mt
  • Year 1938
    Period 1933 - 1938
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 6g/mt

Comments on the production information

  • NO RECORD OF PRODUCTION VALUE AFTER 1901 WAS FOUND, VALUES OF ORES RANGED FROM $2 - 100/TON. A SMALL AMOUNT OF AU WAS PRODUCED IN 1924.

Comments on the workings information

  • 1130 FT. INCLINED SHAFT W LEVELS EVERY 100 FT. 500 FT. XCUT ADIT JOINS SHAFT AT 300 FT. LEVEL. ALSO 190 FT. SHAFT ON MONTAUK VEIN, SUNK IN 1930 .

Reference information

Bibliographic references

  • Deposit

    CLARK, W. B., AND CARLSON, D. W., 1956 , MINES AND MINERAL RESOURCES OF EL DORADO CO., CALIF.: CALIF. JOUR. OF MINES AND GEOL., VOL. 52 , NO. 4 , PG. 429 , 540 , PL. 10 .

  • Deposit

    LOGAN, C. A., 1938 , MIN. RESOURCES OF EL DORADO CO.: CALIF. JOUR. OF MINES AND GEOL., VOL. 34 , NO. 3 , PL. 2 .

  • Production

    CLARK AND CARLSON, 1956

General comments

Subject category Comment text
Deposit VEINS, ORE SHOOTS
Deposit LAND WITHDRAWN FOR FEDERAL RESERVOIR ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1979 Hayden, F. (Albers, J.) U.S. Geological Survey ENTERED DIORITE TO HOST ROCK TYPE. DELETED HOST ROCK FROM IGNEOUS ROCK TYPE.
Updater 04-OCT-1991 Mosier, Dan U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 27-APR-1995 Mosier, Dan U.S. Geological Survey

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.