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Comet

Past Producer in Mariposa county in California, United States with commodity Gold
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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. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10031248
MRDS ID M009907
Record type Site
Current site name Comet
Related records 10163859

Geographic coordinates

Geographic coordinates: -119.84348, 37.56799 (WGS84)
Elevation 1097
Relative position 1 MI. NE OF JERSEYDALE

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Buckingham Mountain(quadrangle 1:24,000 scale)

Yosemite Valley(quadrangle 1:100,000 scale)

Mariposa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Merced(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

Sierra 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 Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004S 019E 22 California

Comments on the location information

  • SE 1/4 ON A FORK OF SKELTON CREEK. UTM EST.

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Analytical data

Result 2 1/2 % SULFIDES

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -119.84348, 37.56799
ListMap

Economic information

Ore body information

  • Strike NW
    Dip 85 NE

Comments on the geologic information

  • GEOL.DESC: TWO VEINS, ON CONTACT BETWEEN GRANITE & QUARTZITE FOOTWALL, AND SLATE HANGING WALL. AVERAGE 2 1/2 FT. THICK.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1918

Ownership information

  • Type Operator
    Owner Clarke, T. A.

Comments on the production information

  • ORE WAS SAID TO AVERAGE $8/TON ( 1920 PRICES. )

Comments on the workings information

  • TWO LEVELS, THE LOWER ONE 750 FEET LONG & THE UPPER ONE 285 FT. LOWER LEVEL HAS A 100 FT. CROSSCUT AND A 40 FT. RAISE. FROM UPPER LEVEL THERE IS A RAISE 168 FT. TO THE SURFACE AND A WINZE 45 FT. DEEP.

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E., JR., & GRAY, H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIF.: CALIF. JOUR. MINES & GEOL., VOL. 53 , NOS. 1 & 2 , P. 251 .

  • Deposit

    CASTELLO, W. O., 1921 , MARIPOSA COUNTY: 17TH REPORT STATE MINERALOGIST ( FOR 1920 ), P. 111 - 112 .

  • Production

    CASTELLO, 1920

General comments

Subject category Comment text
Deposit VEIN
Deposit THREE UNPATENTED CLAIMS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-DEC-1978 Hayden, F. (Albers, J.) 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.