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Mammoth Cons.

Past Producer in Mono county in California, United States with commodities Silver, Gold, Lead, Copper, Zinc
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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. Mining district
  13. Land status
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10007193
MRDS ID C010433
Record type Site
Current site name Mammoth Cons.
Alternate or previous names Crystal Craig, Mammoth
Related records 10211947

Geographic coordinates

Geographic coordinates: -118.98874, 37.59465 (WGS84)
Elevation 2804
Relative position 1/2 MI. SE LAKE MARY

Site location context

Political divisions (FIPS codes)

Mono(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bloody Mountain(quadrangle 1:24,000 scale)

Benton Range(quadrangle 1:100,000 scale)

Mariposa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Crowley Lake(hydrologic unit)

Mono-Owens Lakes(hydrologic accounting unit)

Northern Mojave-Mono Lake(hydrologic subregion)

California(hydrologic region)

Federal lands

Inyo 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 Mono

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004S 027E 09,10,15,16 California

Comments on the location information

  • UTM ACC. S 1/2 SW 1/4 15

Commodities

Commodity Importance
Silver Primary
Gold Primary
Lead Secondary
Copper Secondary
Zinc Critical Secondary

Comments on the commodity information

  • AU BULLION REPORTEDLY VALUED AT $7 - $16/OZ. GRADE OF ORE EST. AT $9 - $15/TON.

Materials information

Materials Type of material
Galena Ore
Gold Ore
Pyrite Ore
Pyrrhotite Ore
Silver Ore
Sphalerite Ore
Calcite Gangue
Quartz Gangue

Host and associated rocks

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

Nearby scientific data

(1) -118.98874, 37.59465
ListMap

Economic information

Ore body information

  • General form PINCH-SWELL
    Strike NW
    Dip 70 - 80 NE
    Thickness 12.19M

Comments on the geologic information

  • META-LATITE IS DECOMPOSED. ; GEOL.DESC: MINERALIZATION, CONFINED TO 500 FT. WIDE BELT IN CRYSTALLINE ROCKS

Economic information about the deposit and operations

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

Mining district

District name Mammoth Lakes

Land status

Ownership category National Forest

Production statistics

  • Year 1881
    Period 1878 - 1881
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor Lead Lead 12.87mt
    Minor Copper Copper 2.16mt
  • Year 1941
    Period 1939 - 1941
    Accuracy Accurate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 3g/mt
    Major Ore Silver Silver 99g/mt
    Minor Ore Copper Copper 7wt-pct
    Minor Ore Lead Lead 4wt-pct

Comments on the production information

  • NO OTHER PRODUCTION RECORDS FOUND.

Comments on the workings information

  • PRINCIPAL DEVELOPMENT CONSISTS OF TWO TUNNELS. UPPER TUNNEL IS A CROSSCUT DRIVEN EAST 65 FT. TO THE VEIN; DRIFT NORTH 250 FT., 200 FT. OF WHICH IS REPORTED TO BE IN ORE. WHERE CROSSCUT CUTS THE VEIN, THERE IS A RAISE FROM THE LOWER TUNNEL WHICH HAS BEEN DRIVEN 25 FT. ABOVE THE UPPER TUNNEL. AT ONE PLACE IN THIS TUNNEL, CROSSCUTS INDICATE A MINERALIZED WIDTH OF 25 FT. THE LOWER TUNNEL, APPROXIMATELY 100 FT. BELOW THE UPPER ONE, IS A CROSSCUT EAST 40 FT. TO THE VEIN; DRIFT SOUTHEAST 480 FT. AT 280 FT. FROM CROSSCUT THERE IS ANOTHER CROSSCUT NORTHEAST 50 FT. AND ANOTHER CROSSCUT NORTHEAST 20 FT. AT 180 FT. AT 360 FT. FROM THE MAIN CROSSCUT THERE IS A RAISE CONNECTING WITH UPPER TUNNEL. ABOUT 280 FT. NORTHEAST OF THIS VEIN IS THE DOME VEIN ROUGHLY PARALLEL, WHICH SHOWS ON SURFACE UP TO 20 FT. IN WIDTH. NO WORK HAS BEEN DONE HERE. ON THE ARGOSY GROUP, ABOUT 3000 FT. SOUTH OF THE ABOVE DESCRIBED WORKINGS AND JUST NORTH OF MAMMOTH CREEK FALLS, A TUNNEL HAS BEEN DRIVEN 150 FT. ON A
  • VEIN 6 FT. TO 8 FT. WIDE. ON THE WEST SIDE OF THE CREEK, TWO CROSSCUTS 50 FT. AND 75 FT., ARE REPORTED TO CARRY VALUES THROUGHOUT. DEFINITE AVERAGE VALUES WERE NOT OBTAINABLE. THE MAMMOTH MINE IS DEVELOPED BY FOUR TUNNELS. THE LOWER TUNNEL (NO. 4), AT AN ELEVATION OF 8900 FT., WAS DRIVEN N 35 DEG. W., 1650 FT. AT 465 FT., THERE IS A CROSSCUT S 55 DEG. W., 87 FT. SAID TO BE ALL IN QUARTZ, WITHOUT HAVING REACHED THE FOOTWALL. AT 1105 FT., THERE IS A CROSSCUT S 55 DEG. W., 50 FT. THERE ARE OTHER WORKINGS IN THIS TUNNEL (WHICH IS INACCESSIBLE), DESCRIPTION OF WHICH IS NOT AVAILABLE. TUNNEL NO. 3, AT AN ELEVATION OF 9275 FT. HAS BEEN DRIVEN 1250 FT. WITH A 50-FT. CROSSCUT AT ABOUT 470 FT. FROM THE PORTAL. TUNNEL NO. 2 AT 9475 FT. ELEVATION IS 600 FT. LONG. TUNNEL NO. 1, ELEVATION 9600 FT., IS ABOUT 300 FT. LONG AND SOME 600 FT. BELOW THE TOP OF THE MOUNTAIN. THESE WORKINGS ARE ALL INACCESSIBLE AND FIGURES ARE TAKEN FROM OLE REPORTS AND MAPS. ADDITIONAL WORKINGS AFTER WORLD WAR
  • II BY THE AMERICAN METALS CO. FOUND NO ADDITIONAL ORE AND THE MINE WAS CLOSED AFTER 1956.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit FRACTURE ZONES AND VEINS - AVG. 15 FT. THICK.
Deposit COMPRISES 27 CLAIMS. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1979 Nelson, Scott C. (Albers, John, P.) U.S. Geological Survey CHECKED HOST ROCK TYPE
Updater 21-OCT-1991 Mosier, Dan U.S. Geological Survey AND AGE, 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.

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.