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Twin Creeks Chimney & Rabbit Ck's

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. Economic information about the deposit and operations
  9. Mining district
  10. Mineral rights holdings
  11. Land status
  12. Ownership information
  13. Production statistics
  14. Reserves and resources
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10149593
MAS/MILS ID 0320130501
Record type Site
Current site name Twin Creeks Chimney & Rabbit Ck's
Alternate or previous names Discovery Pit, Chimney Creek, Rabbit Creek, North Pit, South Pit

Comments on the site names

  • THE CHIMNEY CREEK AND RABBIT CREEK MINES WERE COMBINED INTO THIS OPERATION, THE TWIN CREEKS MINE, IN 1993. SEE MAS FILES: OPEN PIT & HEAP LEACH OPERATIONS: RABBIT CREEK MINE (0320130504), AND CHIMNEY CREEK MINE, (0320130511): MILS DATA ONLY (LATS/LONG ARE APPROX).

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -117.15926, 41.28599 (WGS84)
Location accuracy 5000(meters)

Site location context

Political divisions (FIPS codes)

Humboldt(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Dry Hills North(quadrangle 1:24,000 scale)

Osgood Mountains(quadrangle 1:100,000 scale)

McDermitt(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 043 N 039 E 06 Nevada

Commodities

Commodity Importance
Gold Primary
Mercury Tertiary
Silver Secondary

Nearby scientific data

Ore Body (1) -117.15926, 41.28599
ListMap

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Plant
Commodity type Metallic
Significant Yes
Discovery year 1985
Mining method Open Pit
Year of first production 1987
Plant type Leach
Milling method Heap Leach-Agglomerate-Carbon Column-Merrill-Crowe

Comments on exploration

  • DRILLING IN SECTION 30 TO EXPAND MINE.

Mining district

District name Potosi District

Mineral rights holdings

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

Land status

Ownership category Mixed

Ownership information

  • Type Owner-Operator
    Owner Santa Fe Pacific Gold Corp. (Sfpg)
    Interest 100
    Home office New Mexico
    Year 1995
    First year 1994
  • Type Owner
    Owner Santa Fe Pacific Minerals Corp. (Sfpm) (Owner Of Sfpg)
    Interest 100
    Home office New Mexico
    Year 1994
    First year 1993
  • Type Operator
    Owner Gold Fields Mining Corp. (Sub Of Consolidated Goldfield)
    ID 2670110
    Year 1987
    First year 1987
    Last year 1994
  • Type Owner
    Owner Consolidated Goldfields
    Interest 100
    Year 1987
    First year 1987
    Last year 1994

Production statistics

  • Year 1966
    Description Heap Leach Ore @ 0.022 Opt 18238000 St Ore
  • Year 1988
    Description Gold 150000 Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 4665522.15g
  • Year 1989
    Description Gold (From 2,266,000 Mt Ore) 230000 Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 7153800.63g
  • Year 1989
    Description Mill 6,922,248 Gm Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 6922248g
  • Year 1991
    Description Au 228065 Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 7093615.39g
  • Year 1991
    Description Ag 100000 Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 3110348.1g
  • Year 1992
    Description Au 161000 Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 5007660.44g
  • Year 1993
    Description Au 346239 Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 10769238.15g
  • Year 1994
    Description Ore Milled @ 0.105 Opt 2212000 St Ore
  • Year 1994
    Description Heap Leach Ore @ 0.026 Opt 16770000 At Ore
  • Year 1994
    Description Total Gold Production 501891 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 15610557.18g
  • Year 1995
    Description Ore Milled @ 0.087 Opt 2401000 St Ore
  • Year 1995
    Description Heap Leach Ore @ 0.020 Opt 17022000 St Ore
  • Year 1995
    Description Total Gold Produced 424467 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 13202401.26g
  • Year 1996
    Description Ore Milled @ 0.085 Opt 2768000 St Ore
  • Year 1996
    Description Total Gold Production 459084 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 14279110.47g

Reserves and resources

  • Type In-situ
    Estimate year 1991
    Demonstrated 24820000mt ore
    Total resources 24820000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.14 g/mt Gold Major 1991
  • Type In-situ
    Estimate year 1994
    Demonstrated 134319587mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.33 g/mt Gold Major 1994
  • Type In-situ
    Estimate year 1996
    Inferred 146057000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.61 g/mt Gold Major 1996
  • Type In-situ
    Estimate year 1996
    Demonstrated 136207000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.38 g/mt Gold Major 1996
  • Type In-situ
    Estimate year 1997
    Demonstrated 136667000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.5 g/mt Gold Major 1997
  • Type In-situ
    Estimate year 1997
    Demonstrated 140432000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 1.58 g/mt Gold Major 1997
  • Type In-situ
    Estimate year 1997
    Demonstrated 277099000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.03 g/mt Gold Major 1997

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Capacity 6825
    Capacity Units MT ORE/DAY
    Unit Production Cost 2.55
    Units of Production $/MT ORE
    Operating Days per Year 260
    Operating Shifts per Day 2
    Year of Information 1991
  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 2
    Status of Mining Method ESTIMATE
    Mining Method OPEN PIT
    Capacity 4187
    Capacity Units MT ORE/DAY
    Unit Production Cost 3.22
    Units of Production $/MT ORE
    Operating Days per Year 260
    Operating Shifts per Day 2
    Year of Information 1991

Comments on other economic factors

  • OPERATION HAS APPROXIMATELY15 YEARS OF LIKE AS OF 07/95.

Reference information

Bibliographic references

  • Production

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

  • Production

    THE MINING RECORD, VOL 107, #34, AUGUST 21, 1996. "SANTA FE

  • Production

    PACIFIC GOLD; TWIN CREEKS EXPANSION PROJECT AHEAD OF

  • Production

    SCHEDULE". PP. 1, 6.

  • Deposit

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

  • Ownership

    THE NEVADA MINER, VOL. 2N, NO. 7, NOVEMBER 1993.

  • Reserve-Resource

    NOVEMBER, 1987 E & MJ MAGAZINE:

  • Reserve-Resource

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

  • Reserve-Resource

    COMPANIES, P277.

  • Reserve-Resource

    1995/69, NEVADA MINES DIRECTORY, P25.

  • Reserve-Resource

    SANTA FE PACIFIC GOLD CORPORATION, FORM 10-K, PP. 4-5, 7-10.

  • Reserve-Resource

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

  • Reserve-Resource

    9.

  • Deposit

    BAGBY, W. C., AND B. R. BERGER. GEOLOGIC CHARACTERISTICS

  • Deposit

    OF SEDIMENT-HOSTED. DISSEMINATED PRECIOUS-METAL DEPOSITS IN

  • Deposit

    THE WESTERN UNITED STATES. PAPER IN REVIEWS IN ECONOMIC

  • Deposit

    GEOLOGY, V. 2. SOC. ECON. GEOL., 1985, PP. 169-202.

  • Deposit

    BERGER, B. R. GEOLOGIC CHARACTERISTICS OF SEDIMENT- AND

  • Deposit

    VOLCANIC-HOSTED DISSEMINATED GOLD DEPOSITS-SEARCH FOR AN

  • Deposit

    OCCURRENCE MODEL. U.S. GEOL. SURV. BULL. 1646, 1985, PP.

  • Deposit

    117-119.

  • Deposit

    CARTER, R. A. A RECORD YEAR FOR NEVADA GOLD. ENG. AND

  • Deposit

    MIN. J., V. 191, NO. 6, JUNE 1990, PP. 36-39.

  • Deposit

    ENVIRONMENTAL SOLUTIONS, INC. FINAL DESIGN: HEAP LEACH

  • Deposit

    FACILITIES PERMITTING REPORT, CHIMNEY CREEK GOLD MINE,

  • Deposit

    HUMBOLDT COUNTY, NEVADA. SEPT. 1987, 24 PP.

  • Deposit

    HOTZ, P. E., AND R. WILLDEN. GEOLOGY AND MINERAL DEPOSITS

  • Deposit

    OF THE OSGOOD MOUNTAIN QUADRANGLE, HUMBOLDT COUNTY, NEVADA.

  • Deposit

    U.S. GEOL. SURV. PROF. PAPER 431, 1964, 128 PP.

  • Deposit

    MCCARTHY, J. CHIMNEY CREEK GAINS CONTROL ROOM FLEXIBILITY.

  • Deposit

    ENG. AND MIN. J., V. 190, NO. 1, JAN. 1989, PP. 33-37.

  • Deposit

    OSTERBERG, M. W., AND J. M. GUILBERT. GEOLOGY, WALL-ROCK

  • Deposit

    ALTERATION, AND NEW EXPLORATION TECHNIQUES AT THE CHIMNEY

  • Deposit

    CREEK SEDIMENT-HOSTED GOLD DEPOSIT, HUMBOLDT COUNTY, NEVADA.

  • Deposit

    GEOL. SOC. OF NEVADA SYMP., SPARKS, NV, APR. 1990, V. 2,

  • Deposit

    PP. 805-819.

  • Deposit

    SCHAFER, R. W., AND R. H. BUFFA. INTERNATIONAL MEETING ON

  • Deposit

    GOLD EXPLORATION: TECHNIQUES, CONCEPTS AND PROBLEMS, FIELD

  • Deposit

    TRIP GUIDEBOOK NO. 6, PRECIOUS METAL DEPOSITS OF

  • Deposit

    NORTHEASTERN NEVADA. OCT. 9-12, 1988, 291 PP.

  • Deposit

    ROCKY MOUNTAIN PAY DIRT, JULY 1993, #166, PP5A, 6A.

  • Deposit

    THE MINING RECORD, VOL104, #29, JULY 21, 1993, P1.

  • Deposit

    THE MINING RECORD, VOL106, #N9, MARCH 1, 1995, PP10, 11.

  • Deposit

    SANTA FE PACIFIC GOLD CORPORATION, ANNUAL REPORT, 62P.

  • Deposit

    SANTA FE PACIFIC GOLD CORPORATION. FAX. "TWIN CREEKS

  • Deposit

    RECEIVES APPROVAL OF THE PLAN OF OPERATIONS" 1/23/97. 1P.

  • Deposit

    PAY DIRT, #691, JAN. 1997, PP. 12, 14.

  • Deposit

    THE MINING RECORD, VOL., 107, #49, DEC., 4, 1996, PP. 6, 7.

  • Deposit

    THE MINING RECORD, VOL., 108, #5, JAN., 29, 1997, P3.

  • Deposit

    NEWS RELEASE, SPGC, NOV. 14, 1996.

  • Deposit

    SANTA FE PACIFIC GOLD CORP., NEWS RELEASE, 11/14/96, P1.

  • Deposit

    MINING ENGINEERING, SEPT., 96, PP. 39-43.

  • Deposit

    THE NORTHERN MINER, JUNE 3, 1996, PP. B1-B16, B4.

General comments

Subject category Comment text
Environmental Factors THERE IS CONCERN OF ACID GENERATING POTENTIAL OF WASTE ROCK, WHICH HOWEVER CONTAINS 100 TO 640 LB/TON LIMESTONE. AT PRESENT THE WASTE CONTAINS 79,458 OZ AU AT A GRADE OF 0.005 OZ/TON. HEAP HAS NOT BEEN COMPLETELY LEACHED. 58,508 OZ OF AU PRESENTLY REMAIN IN HEAP MATERIAL.

Reporter information

Type Date Name Affiliation Comment
Reporter 15-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.

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.