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Ortega

Past Producer in Mariposa county in California, United States with commodities Gold, Zinc, Copper, 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. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10076880
MRDS ID W024167
Record type Site
Current site name Ortega
Related records 10260806

Geographic coordinates

Geographic coordinates: -120.05015, 37.48799 (WGS84)
Elevation 701
Relative position ON HIWAY 40 MIDWAY BETWEEN NEGRO HILL & GUADELOUPE MTN.

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Catheys Valley(quadrangle 1:24,000 scale)

Merced(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fresno River(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 005S;005S 017E;018E 19;24 California

Commodities

Commodity Importance
Gold Primary
Zinc Critical Secondary
Copper Secondary
Lead Secondary

Materials information

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

Analytical data

Result CONCENTRATES ASSAYED $171.54/TON

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -120.05015, 37.48799
ListMap

Economic information

Ore body information

  • Strike N 20 W
    Dip 50 - 60 S
    Thickness 1.22M
    Depth to top 0M

Economic information about the deposit and operations

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

Comments on the production information

  • EARLY PRODUCTION NOT RECORDED

Workings at the site

  • Type of workings Surface/Underground
    Length 428.55M
    Overall depth 54.86M

Comments on the workings information

  • TEN OR MORE SHAFTS OVER DISTANCE OF 1485 FT, DRIFTS, STOPES

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. 148 - 149 , 294

  • Production

    BOWEN & GRAY 1957

General comments

Subject category Comment text
Deposit VEINS, 2 , AVG 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.

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.