Carson Hill Mine

Plant in Calaveras county in California, United States with commodities Gold, Silver
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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Land status
  10. Ownership information
  11. Production statistics
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10259608
MAS/MILS ID 0060091784
Record type Site
Current site name Carson Hill Mine
Alternate or previous names Carson Hill Surface Mine

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -120.4974, 38.01301 (WGS84)
Location accuracy 500(meters)

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Columbia(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Stanislaus(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

USBR(Federal land areas administered by USBR)

Geographic areas

Country State County
United States California Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 002 N 013 E 12 California

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Nearby scientific data

Ore Body (1) -120.4974, 38.01301

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant No
Discovery year 1850
Mining method Open Pit
Year of first production 1850
Plant type Leach
Plant subcategory Precipitation
Milling method Heap Leach-Agglomerate-Carbon Column-Electrowin

Land status

Ownership category Unknown

Ownership information

  • Type Owner
    Owner Western Mining Corp. Holdings Ltd.
    Interest 100
    Home office California
    Year 1996
  • Type Operator
    Owner Carson Hill Gold Mining Corpporation
    ID 0403875
    Home office California
    Year 1996
  • Type Owner-Operator
    Owner Grandview Resources
    Interest 100
    Home office Canada
    Year 1987
    First year 1984

Production statistics

  • Year 1988
    Description Gold Production 60000 T Oz.Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 1866208.86g
  • Year 1989
    Description Ore Leached 1384000 Mt/Yr
  • Year 1989
    Description Gold Production (Last Year) 35522 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 1104857.85g
  • Year 1991
    Description Residual Heap Leach Gold Production 1309 T Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 40714.45g

Reserves and resources

  • Type In-situ
    Estimate year 1987
    Indicated 14660000mt ore
    Demonstrated 14660000mt ore
    Inferred 4500000mt ore
    Total resources 19160000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.57 g/mt Gold Major 1987

Comments on other economic factors

  • LAST ORE WAS CRUSHED IN LATE 1990. CLOSURE DUE TO LOW GRADE/HIGH SULFIDE CONTENT AND LOW AU PRICE.

Reference information

Bibliographic references

  • Deposit

    WALLACE MINER, P1, 8/14/86.

  • Deposit

    MINING ENGINEERING MAGAZINE, P11, 1/87.

  • Deposit

    ROCKY MTN PAYDIRT, PP. 4A-5A, 1/87.

  • Deposit

    MINING JOURNAL, P10, 1/87.

  • Deposit

    THE MINING JOURNAL, "CARSON HILL PROPERTY READYING FOR

  • Deposit

    COMMERCIAL PRODUCTION", V 98, #23, JUNE 10, 1987, P39.

  • Deposit

    CALIF. DIV. MINES AND GEOL, SPECIAL PUBLICATION 103, 1990.

  • Deposit

    RANDOL MINING DIRECTORY 1996/7, U.S. MINES & MINING

  • Deposit

    COMPANIES, P152.

Reporter information

Type Date Name Affiliation Comment
Reporter 28-OCT-97 Buckingham, David A. U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.