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Mc Coy/Cove Mine

Plant in Lander county in Nevada, United States with commodities Gold, Silver
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10271313
MRDS ID M242947
MAS/MILS ID 0320150432
Record type Site
Current site name Mc Coy/Cove Mine
Alternate or previous names Mccoy Mine, Brown Adit, Cove, Mccoy/Cove Mine
Related records 10047574

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -117.21344, 40.3199 (WGS84)
Elevation 1658
Location accuracy 100(meters)

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 028 N 042 E 11 C Nevada

Commodities

Commodity Importance
Gold Primary
Silver Primary

Economic information

Ore body information

  • Area 18221HA
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 STOCKWORK
    Shape of Orebody #1 IRREGULAR
    Type of Orebody #2 DISSEMINATED
    Shape of Orebody #2 LENTICULAR
    Type of Orebody #3 OTHER
    Shape of Orebody #3 OTHER
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin OTHER
    Primary Ore Control FRACTURING
    Secondary Ore Control IGNEOUS
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 ADV ARGILLIC
    Total Surface Area (HA) 18221
    Date of Last Modification 960822

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Mining method Combined Methods
Year of first production 1986
Plant type Leach
Plant subcategory Hydromet
Milling method Heap Leach-Agglomerate-Carbon Column-Merrill-Crowe

Mining district

District name Battle Mountain District

Mineral rights holdings

Type of mineral rights Located Claim
Type of mineral rights Other
Type of mineral rights Unknown

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner Echo Bay Mines Ltd.
    Interest 100
    Home office Canada
    Year 1996
    First year 1989
  • Type Operator
    Owner Echo Bay Minerals Co.
    Home office Nevada
    Year 1996
    First year 1989

Production statistics

  • Year 1986
    Description Heap Leach Ore @ 0.038 O/T Au 523000 St Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 576508.65mt 1g/mt
  • Year 1986
    Description Gold Production 14000 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 435448.73g
  • Year 1987
    Description Heap Leach Ore @ 0.040 O/T Au 4292000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 4731118.81mt 1g/mt
  • Year 1987
    Description Gold Production 90800 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 2824196.07g
  • Year 1988
    Description Silver Production 764100 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 23766169.83g
  • Year 1988
    Description Gold Production 104000 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 3234762.02g
  • Year 1988
    Description Heap Leach Ore @ 0.053au/1.14ag O/T 2994000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 32g/mt
    Major Ore Gold Gold 1g/mt
  • Year 1989
    Description Mill Ore @ 0.107au/3.21ag O/T 1358000 St Ore
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 3g/mt
    Major Ore Silver Silver 91g/mt
  • Year 1989
    Description Heap Leach Ore @ 0.020au/0.44ag O/T 5696000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 12g/mt
    Major Ore Gold Gold 1g/mt
  • Year 1989
    Description Silver Production 2259700 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 70284536.01g
  • Year 1989
    Description Gold Production 214600 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 6674807.02g
  • Year 1990
    Description Silver Production 1982500 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 61662651.08g
  • Year 1990
    Description Gold Production 255000 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 7931387.65g
  • Year 1990
    Description Mill Ore @ 0.097au/1.32ag O/T 2205000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 41g/mt
    Major Ore Gold Gold 3g/mt
  • Year 1990
    Description Heap Leach Ore @ 0.O21au/0.2ag O/T 5709000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 6g/mt
    Major Ore Gold Gold 1g/mt
  • Year 1991
    Description Mill Ore @ .094au/2.69ag O/T 2458000 Sat Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 76g/mt
    Major Ore Gold Gold 3g/mt
  • Year 1991
    Description Heap Leach Ore @ 0.020au/0.69ag O/T 5174000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Silver Silver 19g/mt
  • Year 1991
    Description Silver Production 5619007 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 174770677.46g
  • Year 1991
    Description Gold Production 284327 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 8843559.44g
  • Year 1992
    Description Mill Ore @ .110au/4.55ag O/T 2473000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 129g/mt
    Major Ore Gold Gold 3g/mt
  • Year 1992
    Description Heap Leach Ore @.014au/0.60ag O/T 9029000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 17g/mt
    Major Ore Gold Gold 0g/mt
  • Year 1992
    Description Silver Produced 7921496 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 246386100.32g
  • Year 1992
    Description Gold Produced 301512 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 9378072.76g
  • Year 1993
    Description Mill Ore @ 0.113au/4.62ag O/T 2860000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 131g/mt
    Major Ore Gold Gold 3g/mt
  • Year 1993
    Description Heap Leach Ore @ .017au/.88ag O/T 8938000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 25g/mt
    Major Ore Gold Gold 0g/mt
  • Year 1993
    Description Silver Production 12454338 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 38737301.65g
  • Year 1993
    Description Gold Production 395608 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 12304785.91g
  • Year 1994
    Description Mill Ore @ 0.14au/5.29 O/T 2660000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 4g/mt
    Major Ore Silver Silver 149g/mt
  • Year 1994
    Description Heap Leach Ore @.013au/.48ag O/T 7892000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 14g/mt
    Major Ore Gold Gold 0g/mt
  • Year 1994
    Description Silver Production 10443151 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 32481831.76g
  • Year 1994
    Description Gold Production 359360 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 11177346.93g
  • Year 1995
    Description Heap Leach Ore @ .018au/.49ag O/T 4355000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 14g/mt
    Major Ore Gold Gold 1g/mt
  • Year 1995
    Description Silver Production 11905806 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 37031182.4g
  • Year 1995
    Description Gold Production 310016 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 9642576.76g
  • Year 1995
    Description Mill Ore @ .113au/5.27ag O/T 2648000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 149g/mt
    Major Ore Gold Gold 3g/mt
  • Year 1996
    Description Mill Ore @ .086au/3.14ag O/T 3287000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 89g/mt
    Major Ore Gold Gold 2g/mt
  • Year 1996
    Description Heap Leach Ore @ .018au/.27ag O/T 6068000 St Ore/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 1g/mt
    Major Ore Silver Silver 8g/mt
  • Year 1996
    Description Silver Production 7102300 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 220906253.1g
  • Year 1996
    Description Gold Production 271700 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 8450815.78g

Reserves and resources

  • Type In-situ
    Estimate year 1996
    Measured 22844726mt ore
    Indicated 19993444mt ore
    Demonstrated 42838170mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.1 g/mt Gold Major 1996
    Silver Ag 45.6 g/mt Silver Major 1996
  • Type In-situ
    Estimate year 1996
    Measured 22844726mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.23 g/mt Gold Major 1996
    Silver Ag 52.8 g/mt Silver Major 1996
  • Type In-situ
    Estimate year 1996
    Indicated 19993444mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.96 g/mt Gold Major 1996
    Silver Ag 37.71 g/mt Silver Major 1996
  • Type In-situ
    Estimate year 1996
    Demonstrated 6138919mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.2 g/mt Gold Major 1996
    Silver Ag 22.3 g/mt Silver Major 1996
  • Type In-situ
    Estimate year 1997
    Measured 17835252mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.234 g/mt Gold Major 1997
    Silver Ag 55.543 g/mt Silver Major 1997
  • Type In-situ
    Estimate year 1997
    Indicated 14260037mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.029 g/mt Gold Major 1997
    Silver Ag 48 g/mt Silver Major 1997
  • Type In-situ
    Estimate year 1997
    Demonstrated 1336283mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 0.994 g/mt Gold Major 1997
    Silver Ag 46.629 g/mt Silver Major 1997
  • Type In-situ
    Estimate year 1997
    Demonstrated 33250135mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.146 g/mt Gold Major 1997
    Silver Ag 52.253 g/mt Silver Major 1997

Comments on the reserve resource information

  • TOTAL DEMONSTRATED ORE RESOURCES; 12/31/96 (PROV+PORB+MEAS+IND) COG AVG OF 0.686G/MT AND SR OF 2.8:1. THE COVE DEPOSIT WAS DISCOVERED IN MARCH 1987, IT IS ONE MILE FROM THE MCCOY MINE.

Workings at the site

  • Type of workings Surface
    Area 1136HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Swell Factor .43
    Percent Waste Rock 5.1
    Avg. Overburden Thickness 0
    Primary Material Cover SAND, SILT
    Percentage 0
    Secondary Material Cover M-HARD ROCKS
    Percentage 100
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 9.1
    Max. Pit Slope (degrees) 45
    Capacity 0
    Capacity Units MT ORE/DAY
    Unit Production Cost 0
    Units of Production $/MT ORE
    Operating Days per Year 0
    Operating Shifts per Day 0
    Year of Information 1991
  • Type of workings Surface
    Area 1136HA
    Field Value
    MAS Development Schedule # 2
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method OPEN PIT
    Swell Factor .43
    Percent Waste Rock 5.1
    Avg. Overburden Thickness 0
    Primary Material Cover SAND, SILT
    Percentage 0
    Secondary Material Cover M-HARD ROCKS
    Percentage 100
    Hardness of Ore M-HARD ROCKS
    Avg. Bench Height (meters) 9.1
    Max. Pit Slope (degrees) 45
    Capacity 26494
    Capacity Units MT ORE/DAY
    Unit Production Cost 6.56
    Units of Production $/MT ORE
    Operating Days per Year 260
    Operating Shifts per Day 3
    Year of Information 1991
  • Type of workings Underground
    Field Value
    MAS Development Schedule # 3
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method ROOM AND PILLAR 10-34
    Swell Factor .11
    Percent Waste Rock 10
    Percent Recovery 95
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. UNKNOWN
    Number of Inclines 1
    Capacity 635
    Capacity Units MT ORE/DAY
    Unit Production Cost 27.31
    Units of Production $/MT ORE
    Operating Days per Year 364
    Operating Shifts per Day 3
    Year of Information 1990
  • Type of workings Underground
    Field Value
    MAS Development Schedule # 4
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method ROOM AND PILLAR 10-34
    Swell Factor .11
    Percent Waste Rock 10
    Percent Recovery 90
    Hardness of Rock HARDROCK FISSURED WITH EXCESSIVE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. COMPLETELY INCOMPETENT
    Mine Support Chars. CAN'T SUPPORT FILL OR CAVE
    Number of Inclines 1
    1st Condition of Workings OPEN
    Capacity 0
    Capacity Units MT ORE/DAY
    Unit Production Cost 0
    Units of Production $/MT ORE
    Operating Days per Year 0
    Operating Shifts per Day 3
    Year of Information 1990

Comments on other economic factors

  • MCCOY UNDERGROUND IS PRODUCING ABOUT 635 MT/D ORE. COVE UNDERGROUND IS NOT OPERATING DUE TO MUCH WATER AND POOR GROUND.
  • MCCOY OPEN PIT IS MINED OUT. COVE OPEN PIT PRODUCES THE MAJORITY OF THE ORE FOR PROCESSING AT THE LEACH PAD AND MILL.

Reference information

Bibliographic references

  • Geology

    ECHO BAY MINES, 1995 10-K FROM REPORT.

  • Production

    ECHO BAY MINES 1996 ANNUAL REPORT, P58.

  • Reserve-Resource

    ECHO BAY MINES, 1996 ANNUAL REPORT, (PP. 56,57), & 1996

  • Reserve-Resource

    FROM 10-K REPORT, (PP. 3, 4, 5, 8).

  • Deposit

    NEVADA MINING ASSOC. BULLETIN, NOV-DEC 1986, P. 20.

  • Deposit

    E & MJ, 1986, VOL. 13, NO. 5. P. 5.

  • Deposit

    MINING JOURNAL, 1986, SEPT. 12, P. 177.

  • Deposit

    THE NORTHERN MINER, SEP. 15, 1986, P. 1.

  • Deposit

    DRAFT ENVIRONMENTAL ASSESSMENT FOR THE MCCOY/COVE WATER

  • Deposit

    INFILTRATION PROJECT, ECHO BAY MINES, 1989.

  • Deposit

    ECHO BAY MINES ANNUAL REPORT FOR 1989.

  • Deposit

    BROOKS, J. W. AND OTHERS, PETROLOGY AND GEOCHEMISTRY OF THE

  • Deposit

    MCCOY GOLD SKARN, LANDER COUNTY, NEVADA, IN "GREAT

  • Deposit

    BASIN SYMPOSIUM", GEOL. SOC. OF NEVADA, RENO, NEVADA,

  • Deposit

    1990, PP. 61-62.

  • Deposit

    ECHO BAY MINES ANNUAL REPORT FOR 1990.

  • Deposit

    ECHO BAY MINES FORM 10K FOR 1990.

  • Deposit

    THE MINING RECORD, VOL., 104, #23, JUNE 9, 1993, PP. 1, 4.

  • Deposit

    ECHO BAY MINES, ANNUAL REPORT, 1993

  • Deposit

    ECHO BAY MINES, ANNUAL REPORT, 1994

  • Deposit

    RANDOL, MINES DIRECTORY, 1994/95, U.S. MINES & MINING

  • Deposit

    COMPANIES, P335.

  • Deposit

    ECHO BAY MINES, ANNUAL REPORT, 1995

  • Deposit

    1995/96, NEVADA MINES DIRECTORY, PP. 9, 25, 26.

  • Deposit

    MAJOR MINES OF NEVADA, 1995, MINERAL INDUSATRIES IN NEVADA'

  • Deposit

    ECONOMY, THE NEVADA DIVISION OF MINERALS, 1996, NEVADA

  • Deposit

    BUREAU OF MINES AND GEOLOGY, SPE PUB P-7, PP. 10, 11.

  • Deposit

    AMERICAN MINES HANDBOOK, 1996, PP. 90, 91.

  • Deposit

    THE MINING RECORD, VOL 107, #34, AUG 21, 1996, P12.

  • Deposit

    RANDOL, MINES DIRECTORY, 1996/97, U.S. MINES & MINING

  • Deposit

    COMPANIES, P256.

  • Deposit

    ECHO BAY MINES, 1995 10-K FORM REPORT.

  • Deposit

    THE MINING RECORD, VOL. 108, #9, FEB. 26, 1997, PP. 10, 11.

General comments

Subject category Comment text
Deposit COVE UNDERGROUND MINE PROPERTY FILE SEQ #0320150710, MILS DATA. TOTAL MCCOY/CAVE 2560 UNPATENTED CLAIMS.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-NOV-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

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.