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Stemwinder

Past Producer in Shoshone county in Idaho, United States with commodities Gold, Lead, Silver, Zinc, Antimony, Cadmium, 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. Nearby scientific data
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Mineral rights holdings
  15. Land status
  16. Ownership information
  17. Production statistics
  18. Reserves and resources
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. Reporter information

Geologic information

Identification information

Deposit ID 10169399
MRDS ID W019533
MAS/MILS ID 0160790032
Record type Site
Current site name Stemwinder
Alternate or previous names Bunker Hill Mine, Sullivan Mine, B.H. and Sullivan, Tyler, Bunker Chance Mine
Related records 10073443

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -116.13913, 47.53377 (WGS84)
Elevation 735
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Shoshone(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Kellogg West(quadrangle 1:24,000 scale)

Coeur D'Alene(quadrangle 1:100,000 scale)

Spokane(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork Coeur d'Alene(hydrologic unit)

Spokane(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Idaho Shoshone

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 048 N 002 E 01 NENESE Idaho

Commodities

Commodity Importance
Gold Primary
Lead Primary
Silver Primary
Zinc Critical Secondary
Antimony Critical Tertiary
Cadmium Tertiary
Copper Tertiary

Materials information

Materials Type of material
Ankerite Unknown
Arsenopyrite Unknown
Boulangerite Unknown
Chalcopyrite Unknown
Chlorite Unknown
Galena Unknown
Limonite Unknown
Pyrargyrite Unknown
Pyrite Unknown
Quartz Unknown
Sericite Unknown
Siderite Unknown
Sphalerite Unknown
Tetrahedrite Unknown

Alteration

  • (Local) BLEACHING
  • (Local) SERICITIC
  • (Local) SILICIFICATION

Nearby scientific data

Main Entrance (1) Alluvial deposits.
ListMap

Economic information

Ore body information

  • General form TABULAR, FISSURE VEIN
    Strike N80W
    Dip 60S
    Thickness 1600M
    Length 3200M
    Width 915M
    Area 700HA
    Depth to top 100M
    Field Value
    MAS Matrix # 1
    Type of Orebody #1 FISSURE VEIN
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 SHEAR ZONE
    Shape of Orebody #2 LENTICULAR
    Type of Orebody #3 REPLACEMENT
    Shape of Orebody #3 IRREGULAR
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin METAMORPHISM
    Primary Ore Control FAULTING
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 BLEACHING
    Type of Wallrock Alter. #2 SERICITIC
    Type of Wallrock Alter. #3 SILICIFICATION
    Strike And Dip N80W:60S
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 3
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830316
  • General form LENTICULAR, SHEAR ZONE
  • General form IRREGULAR, REPLACEMENT

Controls for ore emplacement

  • FAULTING
  • FRACTURING

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 1885
Mining method Combined Methods - Other Combined Methods
Year of first production 1886
Plant type Beneficiation (Mill)
Plant subcategory Tio2 Pigment-Chloride
Milling method Flotation

Mining district

District name Yreka

Mineral rights holdings

Type of mineral rights Patented
Type of mineral rights Located Claim
Type of mineral rights Private Lease

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Royal Silver Mines, Inc.
    Interest 100
    Home office Utah
    Year 1997
    First year 1996
    Last year 1997
  • Type Owner
    Owner Placer Mining Corp.
    ID 1000083
    Interest 100
    Year 1995
    First year 1995
    Last year 1996
  • Type Owner-Operator
    Owner J. R. Simplot Co. And New Bunker Hill Mining Co.
    Interest 100
    Home office Idaho
    Year 1995
    Last year 1995

Comments on the ownership information

  • NEW OWNERS; FROM MSHA.DBF (1995). FORMER OWNERS J.R. SIMPLOT CO. AND BUNKER HILL MINING CO. AS OPERATOR. THE MSHA.DBF# DID NOT CHANGE (1000083). CHANGED TO PLACER MINING CORP. ROYAL SILVER MINES, INC SIGNED AN OPTION TO PURCHASE 100%, AS OF SEPT. 1996.

Production statistics

  • Year 1969
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Gold Gold 18475g
    Major Zinc Zinc 19mt
    Trace Copper Copper 203mt
    Major Silver Silver 37380138g
    Major Lead Lead 19324mt
  • Year 1971
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 12565g
    Minor Zinc Zinc 22486mt
    Trace Copper Copper 194mt
    Major Silver Silver 52502684g
    Major Lead Lead 21695mt
  • Year 1972
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 9051g
    Minor Zinc Zinc 15203mt
    Trace Copper Copper 227mt
    Major Silver Silver 48667624g
    Major Lead Lead 20080mt
  • Year 1973
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 11508g
    Minor Zinc Zinc 22873mt
    Trace Copper Copper 205mt
    Major Silver Silver 48723610g
    Major Lead Lead 19615mt
  • Year 1974
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 14649g
    Minor Zinc Zinc 17501mt
    Trace Copper Copper 215mt
    Major Silver Silver 43619497g
    Major Lead Lead 17207mt
  • Year 1975
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 10855g
    Minor Zinc Zinc 17930mt
    Trace Copper Copper 216mt
    Major Silver Silver 38674043g
    Major Lead Lead 15445mt
  • Year 1976
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 13965g
    Minor Zinc Zinc 21097mt
    Trace Copper Copper 184mt
    Major Silver Silver 36089343g
    Major Lead Lead 15682mt
  • Year 1977
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 9206g
    Minor Zinc Zinc 10902mt
    Trace Copper Copper 129mt
    Major Silver Silver 24501117g
    Major Lead Lead 10314mt
  • Year 1978
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 16889g
    Minor Zinc Zinc 14074mt
    Trace Copper Copper 201mt
    Major Silver Silver 35949378g
    Major Lead Lead 14552mt
  • Year 1979
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 12316g
    Minor Zinc Zinc 12136mt
    Trace Copper Copper 161mt
    Major Silver Silver 29033860g
    Major Lead Lead 12793mt
  • Year 1980
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 10388g
    Minor Zinc Zinc 12196mt
    Trace Copper Copper 165mt
    Major Silver Silver 27403384g
    Major Lead Lead 12961mt
  • Year 1981
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 14264mt
    Major Gold Gold 16018g
    Minor Zinc Zinc 17030mt
    Trace Copper Copper 210mt
    Major Silver Silver 30018907g

Comments on the production information

  • MINE CLOSED JANUARY 1991. ADDITIONAL CRIB NO. WO19388 NEW PEFR-1989-WFOC: 1986 BROOK-HUNT & ILZSG DATA
  • 6-75 TOTAL PRODUCTION THROUGH 1974 IS APPROX 30 MILLION MET TONS OF ORE.

Reserves and resources

  • Type In-situ
    Estimate year 1990
    Measured 417000mt ore
    Indicated 1724000mt ore
    Demonstrated 2141000mt ore
    Inferred 2141000mt ore
    Total resources 4282000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 53.8 g/mt Silver Major 1990
    Zinc Zn 6.36 wt-pct Zinc Major 1990
    Lead Pb 2.87 wt-pct Lead Major 1990

Comments on the reserve resource information

  • GULF RESOURCES 1978 10K LISTS RESERVES AS 1750000 MT MEASURED, 2290000 MT DEMONSTRATED 2.3% LEAD, 3.3% ZINC AND 48 PPM SILVER. PUBLISHED RESERVES WERE OBTAINED FROM THE ANNUAL REPORT OF GULF RESOURCES AND CHEM CORP SUBMITTED TO THE SECURITIES AND COMMISSION FOR YEAR OF 1980.

Workings at the site

  • Type of workings Underground
    Length 200000M
    Overall depth 1400M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method HORIZ CUT & FILL W/TAILINGS 10-60
    Swell Factor .7
    Percent Waste Rock 13
    Percent Recovery 90
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING WHEN DRY
    Mine Support Chars. OTHER
    Number of Shafts 3
    Avg. Length of Adits (m) 3000
    Number of Adits 1
    1st Condition of Workings OPEN
    2nd Condition of Workings PART ACCESSIBLE
    Capacity 1360
    Capacity Units MT ORE/DAY
    Unit Production Cost 26.83
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 1
    Year of Information 1989
  • Type of workings Underground
    Length 200000M
    Overall depth 1400M
    Field Value
    MAS Development Schedule # 2
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method HORIZ CUT & FILL W/TAILINGS 10-60
    Swell Factor .7
    Percent Waste Rock 13
    Percent Recovery 90
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING WHEN DRY
    Mine Support Chars. OTHER
    Number of Shafts 3
    Avg. Length of Adits (m) 3000
    Number of Adits 1
    1st Condition of Workings OPEN
    2nd Condition of Workings PART ACCESSIBLE
    Capacity 2100
    Capacity Units MT ORE/DAY
    Unit Production Cost 41.54
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 1
    Year of Information 1981

Comments on the workings information

  • CERCLA (SUPERFUND) SITE LISTED ON NATIONAL PRIORITIES LIST (NPL), SEPT. 1983. ENVIRONMENTAL HAZARDS INCLUDE: (1) ACID MINE DRAINAGE CONTAMINATED WITH HEAVY METALS, (2) MINE DUMPS AND MILL TAILINGS CONTAINING HEAVY METALS. DOI/USBM ALLEGED TO BE A PRP.

Reference information

Bibliographic references

  • Reserve-Resource

    BUNKER HILL MINING CO. INC., 1988 PROSPECTUS, APRIL 12, 1988, P12.

  • Deposit

    RANSOME 1905 USGS BULL 260 P 274-303

  • Deposit

    HERSHEY 1912 MIN SCI PRESS VOL 12 P 750-753, 786-790, 825-

  • Deposit

    UMPLEBY AND JONES 1923 USGS BULL 732 156 P

  • Deposit

    SHANNON 1926 US NATL MUSEUM BULL 131 P 99 AND 111

  • Deposit

    ENG AND MIN JOUR 1939 V 140 NO 8 P 35-82

  • Deposit

    HAFFNER 1941 MS THESIS QUEENS UNIV

  • Deposit

    SHAW 1954 PHD THESIS UNIV CALIF MINER STUD IN BUNKER HILL M

  • Deposit

    MCCONNEL 1961 IN ID BUR MINES AND GEOL BULL 16 P 17-20

  • Deposit

    MINERALS YEARBOOK 1961

  • Deposit

    SEVERAL ARTICLES 1963 IN ID BUR MINES AND GEOL PAMPH 133 P

  • Deposit

    FRYKLUND 1964 USGS PROF PAPER 445

  • Deposit

    Hobbs, S. W., And Others, 1965 , Geology Of The Coeur D'Alene District, Shoshone County, Idaho: USGS Prof. Paper 478 , 139 P.

  • Deposit

    SATHER AND PRINDLE 1970 AIME SYMP MIN-MET OF PB-ZN: V 1 P 3

  • Deposit

    PARKER AND RUSSELL 1970 IN AIME SYMP MIN-MET OF PB-ZN: V 1 P

  • Deposit

    BAKER AND OTHERS 1970 IN AIME SYMP MIN-MET PB-ZN: V 2 P 114

  • Deposit

    ENJ MIN JOUR 1973-74 INTERN DIRECTORY OF MINING SEC 2A P 1

  • Deposit

    NO AUTHOR CITED 1974 WALLACE MINER V 68 NO 34

  • Deposit

    CADDEY 1974 PHD THESIS UNIV OF IDAHO, MOSCOW, IDAHO

  • Deposit

    NO AUTHOR CITED 1975 WALLACE MINER V 69 NO 1

  • Deposit

    NO AUTHOR CITED 1975 WALLACE MINER V 69 NO 12 P 1

  • Deposit

    GULF RES AND CHEM CORP REPT TO SEC AND EXCH COMM FILE NO 1-

  • Deposit

    V.E. MITCHELL, ET. AL; MINES AND PROSPECTS MAP SERIES, 1981,

  • Deposit

    SPOKANE QUAD, LOCATION NO. 232

  • Deposit

    1986 BROOK-HUNT.

  • Deposit

    THE MINING RECORD, VOL., 107, #39, SEPT., 25, 1996, P6.

  • Deposit

    THE MINING RECORD, VOL., 108, 316, APRIL 16, 1997, P1.

  • Deposit

    SOUTHWESTERN PAYDIRT, N694, APRIL 1997, PP. 12, 13.

Reporter information

Type Date Name Affiliation Comment
Reporter 23-JUN-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 12/03/2025
MSHA mine ID1000083
Mine name (MSHA)BUNKER HILL MINE
Current operatorSilver Valley Metals Corp.
Current controller (parent)Bunker Hill Mining Corp
Mine typeUnderground (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.

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