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Mc Coy Gold Deposit

Producer in Lander county in Nevada, United States with commodities Gold, Silver, Copper
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Reserves and resources
  19. Links to other databases
  20. Bibliographic references
  21. Reporter information

Geologic information

Identification information

Deposit ID 10047574
MRDS ID M242947
Record type Site
Current site name Mc Coy Gold Deposit
Alternate or previous names Echo Bay Mine, NBMG Sample Site 669
Related records 10271313

Geographic coordinates

Geographic coordinates: -117.22233, 40.32462 (WGS84)
Elevation 1615
Relative position 30 MILES SW OF BATTLE MOUNTAIN

Site location context

Political divisions (FIPS codes)

Lander(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

McCoy(quadrangle 1:24,000 scale)

Fish Creek Mountains(quadrangle 1:100,000 scale)

Winnemucca(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Reese(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

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

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Nevada Lander

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 028N 042E 02 Nevada

Comments on the location information

  • NE SIDE FISH CREEK MOUNTAINS ; INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Secondary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Calcite Gangue
Chlorite Gangue
Epidote Gangue
Garnet Gangue
Pyrite Gangue
Pyroxene Gangue
Quartz Gangue
Zeolite Gangue

Alteration

  • (Local) Strong Silication

Analytical data

Result SAMPLE 669

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Brown Stock
    Rock description Brown Stock
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Triassic
    Stratigraphic age (youngest) Late Triassic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Augusta Mountain
    Rock description Augusta Mountain
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Chert

Nearby scientific data

(1) -117.22233, 40.32462
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Faults Localized Stock Emplacement

Ore body information

  • General form STRATIFORM TO IRREGULAR

Controls for ore emplacement

  • Igneous Contact With Sediments; Intersection Of Series Of Ne Faults With A Nw Normal Fault.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1981

Mining district

District name Mc Coy District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner-Operator
    Owner Echo Bay Mines
    First year 1988

Reserves and resources

  • Type In-situ
    Estimate year 1981
    Total resources 1133000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.258 g/mt Gold Major 1981
  • Type In-situ
    Estimate year 1986
    Total resources 2721000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 28.235 g/mt Gold Major 1986
  • Type In-situ
    Estimate year 1987
    Total resources 6349000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.552 g/mt Gold Major 1987

Comments on the reserve resource information

  • PRODUCTION IS NW ABOUT 85000 OZ AU YEAR BY CYANIDE HEAP-LEACH, CARBON RECOVERY SYSTEM

Comments on development

  • SUMMA CORP DRILLED OVER 200 HOLES IN WHAT IS NOW MC COY DEPOSIT, IN 1969, HOUSTON OIL BOUGHT OUT SUMMA'S HOLDINGS IN 1977 AND DRILLED ANOTHER 120 HOLES IN THE DEPOSIT AND IN 1981 ANNOUNCED SUB-ECONOMIC RESERVES. PROPERTY WAS LEASED TO CONSOIDATED GOLDFIELDS PLC WHO IN 1984 DECIDED THAT THE PROPERTY WAS STILL SUBECONOMIC AND TURNED IT BACK TO TENNECO (SUCCESSOR OF HIMCO). TENNECO REAPPRAISED THE PROPERTY AND DECIDED TO PUT IT INTO PRODUCTION AS AN OPEN-PIT, HEAP LEACH OPERATION IN 1985. DEVELOPMENT BEGAN IN SEPT. 1985 WITH FIRST GOLD POURED APRIL, 1986. TENNECO EXPLORED ADJACENT GROUND AND MORE THAN DOUBLED MINEABLE RESERVE TO 615000 OZ AU. ECHO BAY ACQUIRED TENNECO'S PRECIOUS METALS PROPERTIES IN NOV. 1986.

Reference information

Bibliographic references

  • Deposit

    LANE, M.F., 1987, GEOLOGY AND MINERALIZATION OF THE MCCOY SKARN, LANDER CO., NEVADA; UNPUB. PAPER PRESENTED AT 93RD NW MINING ASSOC. CONVENTION, 1987.

  • Deposit

    UNPUB. REPORT BY ECHO BAY MINES, ON FILE AT NBMG, MINING DISTRICT FILE 157.

  • Deposit

    KUYPER, B.A., 1986, GEOLOGY OF THE MCCOY GOLD DEPOSIT, GSN. PRECIOUS METALS SYMPOSIUM PAPER.

  • Deposit

    SCHRADER, F.C., 1934, USGS IC. #10.

  • Deposit

    BONHAM, H.F., 1988, IN NBMG, MI-1987.

  • Deposit

    BONHAM, H.F., 1986, NBMG MAP 91.

  • Deposit

    SMITH, P. AND BENTZ, J., NOV, 1981, NBMG FIELD EXAMINATION REPORT.

  • Reserve-Resource

    BONHAM, 1988

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1988 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology

Beyond USGS

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

Maps centered on this site

Authoritative Nevada resources

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