1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Lookout

Prospect in Mariposa county in California, United States with commodity Copper
Map
XML
JSON
KML
C
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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10031196
MRDS ID M009822
Record type Site
Current site name Lookout
Related records 10187985

Geographic coordinates

Geographic coordinates: -120.0232, 37.27854 (WGS84)
Relative position 1 1/4 MILE NW OF GREEN MTN. FORREST SERVICE LOOKOUT

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Illinois Hill(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 007S 018E 32 California

Commodities

Commodity Importance
Copper Tertiary

Materials information

Materials Type of material
Malachite Ore

Alteration

  • (Local) Hydrothermal

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -120.0232, 37.27854
ListMap

Economic information

Controls for ore emplacement

  • Shear Zone

Comments on the geologic information

  • GEOL.DESC: WALL ROCKS ADJACENT TO SHEAR ZONE ARE POROUS AND THOROUGHLY LEACHED BY HYDROTHERMAL SOLUTIONS.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No

Comments on the production information

  • EXPLORATION WORK WAS BEING CARRIED ON INTERMITTENTLY IN THE SUMMER OF 1956.

Comments on the reserve resource information

  • EXPLORATION WAS CARRIED ON INTERMITTENTLY IN SUMMER OF 1956 .

Comments on the workings information

  • 2 OLD SHAFTS AND CUTS, MOST RECENT WORKING IS A SHALLOW SHAFT INCLINED 80 DEG E SUPPORTED BY 8 INCH STALLS AND ENTERED BY A CHAIN LADDER

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E. AND CLIFFTON, G. H., 1957 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY, CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 1 & 2 , P. 229

General comments

Subject category Comment text
Deposit OXIDIZED COPPER ORE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JUL-1978 Fraticelli, L. A. (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.