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

Leach

Past Producer in Mariposa county in California, United States with commodities Gold, 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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Ownership information
  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 10031088
MRDS ID M009672
Record type Site
Current site name Leach

Geographic coordinates

Geographic coordinates: -119.9857, 37.62771 (WGS84)
Elevation 853
Relative position SE1/4. LOCATED 1 1/2 MI. NW OF BRICEBURG AND ABOUT 1 MILE BY UNIMPROVED DIRT ROAD FROM THE GRADED BRICEBURG-KINSLEY ROAD.

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Kinsley(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

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 003S 018E 33 California

Comments on the location information

  • UTM EST. SE 1/4

Commodities

Commodity Importance
Gold Primary
Copper Secondary

Materials information

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

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -119.9857, 37.62771
ListMap

Economic information

Ore body information

  • Strike N 25 W
    Dip 75 - 80 E
    Thickness 0.91M
    Depth to top 0M

Controls for ore emplacement

  • Ore Occurs Partly In Ribboned Quartz, Partly In Altered Dike Material, Partly In Altered Wall Rock Next To The Vein.

Comments on the geologic information

  • GEOL.DESC: VEIN ACCOMPANIED OVER MUCH OF ITS STRIKE LENGTH BY FINE-GRAINED, LIGHT GREEN GRANITIC DIKE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1900
Production years 1900 - 1905

Ownership information

  • Type Operator
    Owner M. Van De Carr

Comments on the production information

  • FIRST WORKED ABOUT 1900-05 BY BELL, LEACH, AND CHARLES HARTLEY. PRESENT OWNER WORKS THE MINE INTERMITTENTLY. NO OTHER PRODUCTION RECORD FOUND.

Workings at the site

  • Type of workings Underground
    Length 106.68M
    Overall depth 15.24M

Comments on the workings information

  • INCLINED SHAFT ABOUT 50 FT. DEEP WITH DRIFTS AND STOPES AGGREGATING 300-350 FT.; AN OLDER CROSSCUT TUNNEL ABOUT 60-FT. LONG HAS EXTENSIVE DRIFTS AT THE END WHICH APPARENTLY CONNECT WITH THE MAIN WORKINGS FROM THE SHAFT

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. 276

  • Production

    BOWEN & GRAY 1957

General comments

Subject category Comment text
Deposit VEIN, 1 - 3 FT. THICK

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JAN-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.