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Lone Tree Mine

Plant in Humboldt county in Nevada, United States with commodities Gold, Mercury, 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. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10149516
MRDS ID W700375
MAS/MILS ID 0320130514
Record type Site
Current site name Lone Tree Mine
Alternate or previous names Lone Tree Hill
Related records 10310329

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -117.21345, 40.836 (WGS84)
Elevation 1372
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

Humboldt(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Valmy(quadrangle 1:24,000 scale)

Winnemucca(quadrangle 1:100,000 scale)

Winnemucca(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Humboldt(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Humboldt

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 034 N 042 E 11 Nevada

Commodities

Commodity Importance
Gold Primary
Mercury Tertiary
Silver Secondary

Nearby scientific data

Ore Body (1) -117.21345, 40.836
ListMap

Economic information

Ore body information

  • Strike N90N
    Dip 70W
    Length 300M
    Width 400M
    Depth to top 200M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 PIPELIKE
    Type of Orebody #2 DISSEMINATED
    Shape of Orebody #2 TABULAR
    Type of Orebody #3 MASS SULFIDE
    Shape of Orebody #3 OTHER
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin OTHER
    Primary Ore Control FRACTURING
    Secondary Ore Control OTHER
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 SILICIFICATION
    Type of Wallrock Alter. #2 INTERM ARGILLIC
    Type of Wallrock Alter. #3 BLEACHING
    Strike And Dip N90N:70W
    Minimum Depth to Top 2
    Avg. Thick. Unconsol. Mat. 25
    Min. Thick. Unconsol. Mat. 2
    Date of Last Modification 960718

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Deposit size Medium
Significant Yes
Discovery year 1989
Mining method Open Pit
Year of first production 1991
Plant type Beneficiation (Mill)
Milling method Heap Leach-Agglomerate-Carbon Column-Electrowin

Mining district

District name Golconda District

Mineral rights holdings

Type of mineral rights Federal Lease
Type of mineral rights Minerals Only

Land status

Ownership category Federal

Ownership information

  • Type Owner
    Owner Santa Fe Pacific Gold Corp. (Sfpg)
    ID 2602159
    Interest 100
    Home office New Mexico
    Year 1994
    First year 1990
  • Type Operator
    Owner Lone Tree Mining Inc.
    Home office Nevada
    Year 1992
    First year 1992
  • Type Owner
    Owner Santa Fe Pacific Minerals Corp. (Sfpm) (Owner Of Sfpg)
    Interest 100
    Home office New Mexico
    Year 1994

Production statistics

  • Year 1992
    Description Gold 129000 T 0z
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 4012349.04g
  • Year 1993
    Description Gold 158592 T Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 4932763.25g
  • Year 1994
    Description Ore Milled @ 0.177 Opt 950000 St Ore
  • Year 1994
    Description Heap Leach Ore @ 0.032 Opt 3554000 St Ore
  • Year 1994
    Description Total Gold Production 226911 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 7057721.97g
  • Year 1995
    Description Ore Milled @ 0.154 Opt 1026000 St Ore
  • Year 1995
    Description Heap Leach Ore @ 0.040 Opt 2833000 St Ore
  • Year 1995
    Description Total Gold Proeuction 227986 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 7091158.21g
  • Year 1996
    Description Ore Milled @ 0.154 Opt 1082000 St Ore
  • Year 1996
    Description Heap Leach Ore @ 0.026 Opt 4716000 St Ore
  • Year 1996
    Description Total Gold Production 205738 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 6399167.97g

Comments on the production information

  • TOTAL LONE TREE MINING COMPLEX (LINE TREE + TRENTON CANYON + MULE CANYON) FOR RECORDS 100 & <, & YERAS 1994 TO CURRENT(1996)

Reserves and resources

  • Type In-situ
    Estimate year 1994
    Measured 52114000mt ore
    Demonstrated 52114000mt ore
    Total resources 52114000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.43 g/mt Gold Major 1994
  • Type In-situ
    Estimate year 1996
    Demonstrated 55164000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.64 g/mt Gold Major 1996
  • Type In-situ
    Estimate year 1996
    Demonstrated 13608000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.17 g/mt Gold Major 1996
  • Type In-situ
    Estimate year 1997
    Demonstrated 47349000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.81 g/mt Gold Major 1997
  • Type In-situ
    Estimate year 1997
    Demonstrated 15695000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.51 g/mt Gold Major 1997
  • Type In-situ
    Estimate year 1997
    Demonstrated 63044000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.49 g/mt Gold Major 1997

Comments on the reserve resource information

  • TOTAL DEMONSTRATED RESOURCES, PROVEN+PROBABLE RESERVES + MEAS- URED+INDICATED MINERALIZED MAT, 12/31/96: LONE TREE MINE ONLY: ADIT CAPACITY TOTAL LONE TREE COMPLEX (LONE MINE + TRENTON CAN- YON + MULE CANYON) AVERAGED OVER 1994-1996:

Reference information

Bibliographic references

  • Geology

    LONE TREE MINE, PROJECT HIGHLIGHTS, SANTA FE PACIFIC GOLD

  • Geology

    CORP. PAMPHLET, DATE UNK.

  • Production

    THE NORTHERN MINER. 2/24/97. P.B7.

  • Production

    THE MINING RECORD, VOL 107, #34, AUG. 21, 1996, PP. 1, 6.

  • Reserve-Resource

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

  • Reserve-Resource

    COMPANIES, PP. 254, 255.

  • Reserve-Resource

    SANTA FE PACIFIC GOLD CORP., 1995, FORM 10-K REPORT,

  • Reserve-Resource

    PP. 4, 5, 10-14.

  • Reserve-Resource

    SANTA FE PACIFIC GOLD CORP., 1996 FORM 10-K REPORT, PP.5-7

  • Reserve-Resource

    & 13-18.

  • Deposit

    NEV. DIV. MINE INSPECTION, 1991, DIRECTORY OF NEVADA

  • Deposit

    MINING OPERATIONS ACTIVE DURING CALENDAR YEAR 1990, P48

  • Deposit

    MILLER, 1996, MLA REPORT IN PREPARATION.

  • Deposit

    ROCKY MOUNTAIN PAY DIRT, MAY, 1992, P4A-13A, "SANTA FE

  • Deposit

    PACIFIC'S NEWEST GOLD MINE A WINNER; TO PRODUCE 103,000 OZ

  • Deposit

    THIS YEAR, RISING TO 200,000 OZ WITH SULPHIDE MILL".

  • Deposit

    AMERICAN METAL MARKET, 2/09/94, V105, #105, PP. 1, 4.

  • Deposit

    1995/1996, NEVADA MINES DIRECTORY, P24.

  • Deposit

    SANTA FE PACIFIC MINERALS CORP. LONE TREE MINE PAMPHLET.

  • Deposit

    PERSONAL COMMUNICATION, GARY SAUNDERS, LONE TREE MINE, 1993.

  • Deposit

    MINOBRAS, NEVADA INDUSTRIAL MINERALS, 1973, P21.

  • Deposit

    PAY DIRT, #691, JAN. 97, P13.

General comments

Subject category Comment text
Deposit OPERATION INCLUDES MOST OF THE LONE TREE HILL DEPOSIT SECOND MINES RESPONDENT ID OF 2670226.

Reporter information

Type Date Name Affiliation Comment
Reporter 09-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.

Current status (per MSHA)

StatusActive since 12/07/2011
MSHA mine ID2602159
Mine name (MSHA)Lone Tree Mine
Current operatorGoldcorp DEE LLC
Current controller (parent)i-80 Gold Corp
Mine typeSurface (Metal / non-metal)

MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

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.