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Mariposa

Past Producer in Sierra 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. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10103099
MRDS ID M021706
Record type Site
Current site name Mariposa
Related records 10189629

Geographic coordinates

Geographic coordinates: -120.83547, 39.46406 (WGS84)
Relative position 1/2 MI. SE OF ALLEGHANY

Site location context

Political divisions (FIPS codes)

Sierra(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Alleghany(quadrangle 1:24,000 scale)

Truckee(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Yuba(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Tahoe 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 Sierra

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 018N 010E 02,03 California

Comments on the location information

  • UTM ACC. NE 1/4 03

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -120.83547, 39.46406
ListMap

Economic information

Ore body information

  • Strike N 48 W
    Dip 54 NE
    Thickness 0.61M

Comments on the geologic information

  • FISSURE VEIN FROM 18 IN. TO 2 FT. THICK. SERPENTINE FOOTWALL, SCHIST HANGING WALL. ADJOINS ECLIPSE MINE. AMPHIBOLITE SCHIST CUT ON EACH SIDE OF THE VEIN BY IRREGULAR DIKES OF SERPENTINE. SOUTHERN CONTINUATION OF OPHIR VEIN. VEIN WELL DEFINED BUT IN S PART OF ADIT HAS NUMEROUS SML. BRANCHES. A SML. W DIPPING VEIN E OF ADIT AGREES IN PROJECTION W. FAULT ON 2100 LEVEL OF SIXTEEN TO ONE MINE.

Economic information about the deposit and operations

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

Comments on the production information

  • IDLE SINCE ABOUT 1902 . TOTAL PRODUCTION, W. ECLIPSE MINE, EST. TO BE $118,000 DOLLARS.

Workings at the site

  • Type of workings Underground
    Overall depth 42.67M

Comments on the workings information

  • SEVERAL ADITS DRIFTS ON THE SAME VEIN.

Reference information

Bibliographic references

  • Deposit

    AVERILL, C. V., 1942 , MINES AND MINERAL RESOURCES OF SIERRA CO.: CDM CALIF. JOUR. MINES AND GEOL., VOL. 38 , NO. 1 , P. 60 .

  • Deposit

    LOGAN, C. A., 1929 , SIERRA CO.: CDMM 25TH REPORT STATE MINERALOGIST, APRIL, P. 179 .

  • Deposit

    MACBOYLE, E., 1920 , MINES AND MINERAL RESOURCES SIERRA CO.: CSMB 16TH REPORT STATE MINERALOGIST, DEC. 1918 , P. 101 .

  • Production

    FERGUSON AND GANNETT, 1932

General comments

Subject category Comment text
Deposit AROUND 1918 INCLUDED ECLIPSE CLAIM, WHICH SEE. OWNED IN 1925 BY OPHIR MINING CO. ; INFO.SRC : 1 PUB LIT
Deposit VEIN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1979 Hayden, F. (Albers, J.) U.S. Geological Survey

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.