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Lone Tree Mine

Plant in Humboldt county in Nevada, United States with commodities Gold, Mercury, Silver
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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)
(click for info)

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

Ore body information

  • Strike N90N
    Dip 70W
    Depth to top 200M
    Width 400M
    Length 300M
    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
    Minimum Depth to Top 2
    Avg. Thick. Unconsol. Mat. 25
    Min. Thick. Unconsol. Mat. 2
    Date of Last Modification 960718

Economic information

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 4,012,349g
  • Year 1993
    Description Gold 158592 T Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 4,932,763g
  • Year 1994
    Description Total Gold Production 226911 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 7,057,722g
  • Year 1994
    Description Heap Leach Ore @ 0.032 Opt 3554000 St Ore
  • Year 1994
    Description Ore Milled @ 0.177 Opt 950000 St Ore
  • Year 1995
    Description Total Gold Proeuction 227986 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 7,091,158g
  • Year 1995
    Description Heap Leach Ore @ 0.040 Opt 2833000 St Ore
  • Year 1995
    Description Ore Milled @ 0.154 Opt 1026000 St Ore
  • Year 1996
    Description Total Gold Production 205738 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 6,399,168g
  • Year 1996
    Description Heap Leach Ore @ 0.026 Opt 4716000 St Ore
  • Year 1996
    Description Ore Milled @ 0.154 Opt 1082000 St Ore

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
    Demonstrated 52,114,000mt ore
    Measured 52,114,000mt ore
    Total resources 52,114,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.43 g/mt Gold Major 1994
  • Type In-situ
    Estimate year 1996
    Demonstrated 55,164,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.64 g/mt Gold Major 1996
  • Type In-situ
    Estimate year 1996
    Demonstrated 13,608,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.17 g/mt Gold Major 1996
  • Type In-situ
    Estimate year 1997
    Demonstrated 47,349,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.81 g/mt Gold Major 1997
  • Type In-situ
    Estimate year 1997
    Demonstrated 15,695,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.51 g/mt Gold Major 1997
  • Type In-situ
    Estimate year 1997
    Demonstrated 63,044,000mt 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

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0320130514
USGS Mineral Resources Data System MRDS W700375 MAS references MRDS
Mine Safety and Health Administration MSHA MSHA 2602159

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