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  3. Mineral Resource Data System (MRDS)

Schroeder Gp

Past Producer in Mariposa county in California, United States with commodities Gold, Silver
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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. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10076884
MRDS ID W024174
Record type Site
Current site name Schroeder Gp
Related records 10139722

Geographic coordinates

Geographic coordinates: -119.99515, 37.5841 (WGS84)
Elevation 686
Relative position 3 MI NW COLORADO SCHOOL

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Feliciana 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)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004S 018E 16 California

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
    Stratigraphic age (youngest) Late Permian

Nearby scientific data

(1) -119.99515, 37.5841
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Schistosity Strikes N 60 W, Dips Steep Sw

Ore body information

  • Strike N
    Dip 30 - 35 E
    Thickness 0.91M
    Depth to top 0M

Comments on the geologic information

  • WALL ROCKS ARE MASSIVE, SCHISTOSE & SLATY PYROXENEANDESITE GREENSTONES DERIVED PARTLY FROM TUFF & PARTLY FROM MASSIVE FLOWS AND DIKES.

Economic information about the deposit and operations

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

Mining district

District name Colorado

Comments on the production information

  • TOTAL PRODUCTION PROBABLY $200,000 - $300,000. ORIGINALLY PLACERED BEFORE VEIN WAS FOUND.

Workings at the site

  • Type of workings Surface/Underground
    Length 121.92M
    Overall depth 10.67M

Comments on the workings information

  • OPEN CUT, ADITS, SHAFTS

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E., JR., GRAY, C. H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, V. 53 , NOS. 1 AND 2, P

  • Production

    BOWEN & GRAY, 1957

General comments

Subject category Comment text
Deposit VEINS, DISCONTINUOUS BLANKET VEIN INCHES - 3 FT THICK

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Bowman, J. And 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.