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Greens Creek

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

Geologic information

Identification information

Deposit ID 10136645
MRDS ID A010663
MAS/MILS ID 0021120035
Record type Site
Current site name Greens Creek
Alternate or previous names Big Sore, Zinc Creek, Mariposite Ridge, Upper Killer Creek, Killer Creek, Cliff Creek, Big Bend, Gallagher Creek
Related records 10000482

Geographic coordinates

Point of reference Claim
Geographic coordinates: -134.6284, 58.07894 (WGS84)
Elevation 411
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Juneau(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Juneau A-2(quadrangle 1:63,360 scale)

Juneau SE(quadrangle 1:100,000 scale)

Juneau(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Admiralty Island(hydrologic unit)

Central Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Tongass National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Public Land Survey System information

Meridian Township Range Section Fraction State
Copper River 044 S 066 E 09 C N2N2 Alaska

Commodities

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

Materials information

Materials Type of material
Acanthite Unknown
Argentite Unknown
Bornite Unknown
Chalcocite Unknown
Chalcopyrite Unknown
Covellite Unknown
Galena Unknown
Gold Unknown
Polybasite Unknown
Proustite Unknown
Pyrargyrite Unknown
Pyrite Unknown
Silver Unknown
Sphalerite Unknown
Tennantite Unknown
Tetrahedrite Unknown

Nearby scientific data

Claim (1) -134.6284, 58.07894
ListMap

Economic information

Ore body information

  • Strike N30W
    Dip 45W
    Thickness 229M
    Length 1066M
    Width 6M
    Depth to top 45M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 STRATABOUND
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 STRATIFORM
    Type of Orebody #3 MASS SULFIDE
    Primary mode of Origin SEDIMENTATION
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 OTHER
    Strike And Dip N30W:45W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 1
    Min. Thick. Unconsol. Mat. 1
    Date of Last Modification 890725
  • Area 65HA
    Field Value
    Total Surface Area (HA) 65
    Date of Last Modification 910418

Comments on the geologic information

  • TRIASSIC AGE FOSSIL DISCOVERED IN UNDERGROUNG WORKINGS DECEMGER 1988, USGS MAY REEVALUATE THE LITHOLOGY OF THE FORMATION.

Economic information about the deposit and operations

Operation type Underground
Development status Producer
Commodity type Metallic
Deposit size Medium
Significant Yes
Discovery year 1974
Mining method Filled Stopes - Inclined Cut and Fill
Year of first production 1989
Milling method Flotation

Comments on exploration

  • TEST ADIT PORTAL COLLARED AUGUST 14, 1978. AMOUNT OF UNDERGROUND DD HOLE IN 1978 WAS 909M.

Mining district

District name Admiralty

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Monument

Ownership information

  • Type Owner
    Owner Rtz-Cra Corp. (Ownes Kennecott Minerals Comp.)
    Interest 70.3
    Home office United Kingdom
    Year 1996
  • Type Owner
    Owner Kennecott Minerals Co. (Sub Of Rtz Corp.)
    Interest 70.3
    Home office Utah
    Year 1996
  • Type Owner
    Owner Hecla Mining Co.
    Interest 29.7
    Home office Idaho
    Year 1996
  • Type Operator
    Owner Greens Creek Mining Co. (Kennecott)
    Home office Alaska
    Year 1996

Production statistics

  • Year 1991
    Description Silver 7600000 Troy Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 236386455.6g
  • Year 1991
    Description Gold 37000 Troy Oz
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 1150828.79g
  • Year 1993
    Description Zinc In Concentrate 36880 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Zinc Zinc 36880mt
  • Year 1993
    Description Lead In Concentrate 15063 Mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Lead Lead 15063mt
  • Year 1993
    Description Silver 7000000 Ounces
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 217724367g
  • Year 1993
    Description Gold 32479 Ounces
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 1010209.95g
  • Year 1996
    Description Zinc Production 11500 Mt/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Zinc Zinc 11500mt
  • Year 1996
    Description Gold Production 10000 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 311034.81g
  • Year 1996
    Description Silver Production 2764000 Tr Oz/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 85970021.48g
  • Year 1996
    Description Ore Treated 131000 Mt/Yr
  • Year 1996
    Description Lead Production 5100 Mt/Yr
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Lead Lead 5100mt

Reserves and resources

  • Type In-situ
    Estimate year 1992
    Total resources 11800000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 816 g/mt Silver Major 1992
    Gold Au 6.1 g/mt Gold Major 1992
    Zinc Zn 9.7 wt-pct Zinc Major 1992
    Lead Pb 4.37 wt-pct Lead Minor 1992
  • Type In-situ
    Estimate year 1996
    Measured 8064000mt ore
    Demonstrated 8064000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 669 g/mt Silver Major 1996
    Gold Au 5.18 g/mt Gold Major 1996
    Zinc Zn 12.6 wt-pct Zinc Major 1996
    Lead Pb 4.6 wt-pct Lead Minor 1996
  • Type In-situ
    Estimate year 1996
    Inferred 2480000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 480 g/mt Silver Major 1996
    Gold Au 4.7 g/mt Gold Major 1996
    Zinc Zn 12.8 wt-pct Zinc Major 1996
    Lead Pb 4.4 wt-pct Lead Minor 1996
  • Type In-situ
    Estimate year 1996
    Total resources 10544000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 625 g/mt Silver Major 1996
    Gold Au 5.07 g/mt Gold Major 1996
    Zinc Zn 12.6 wt-pct Zinc Major 1996
    Lead Pb 4.6 wt-pct Lead Minor 1996
  • Type In-situ
    Estimate year 1997
    Demonstrated 8100000mt ore
    Commodity Subtype Grade units Group Importance Year
    Silver Ag 670 g/mt Silver Major 1997
    Gold Au 5.2 g/mt Gold Major 1997
    Zinc Zn 12.6 wt-pct Zinc Major 1997
    Lead Pb 4.6 wt-pct Lead Minor 1997

Comments on the reserve resource information

  • CAPACITY IS 1320 ST/DAY (1996 ANNUAL REPORT) X 365 DAYS. RESERVES ARE AS OF 12/31/96; PROVEN + PROBABLE ORE

Workings at the site

  • Type of workings Underground
    Length 130000M
    Overall depth 0M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ACTUAL
    Mining Method INCLINED CUT AND FILL 10-65
    Percent Waste Rock 12.7
    Percent Recovery 85
    Hardness of Rock HARDROCK WITH LITTLE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. SUPPORTING MAY BACK SLAB
    Mine Support Chars. TIMBER W/LAGGING CONCRETE-UNREINFOR
    Length of Inclines (m) 9500
    Slope of Inclines 15
    Number of Inclines 4
    Avg. Length of Adits (m) 6080
    Number of Adits 2
    1st Condition of Workings OPEN
    Capacity 1814
    Capacity Units MT ORE/DAY
    Unit Production Cost 86.95
    Units of Production $/MT ORE
    Operating Days per Year 355
    Operating Shifts per Day 3
    Year of Information 1994

Comments on other economic factors

  • 145 MT OF DEVELOPMENT WASATE ROCK GENERATED EACH DAY. DILUTION OF ORE DURING MINING IS ESTIMATED AT 20%

Reference information

Bibliographic references

  • Production

    RTZ-CRA FACT BOOK, 1997, P34.

  • Ownership

    ALASKA KARDEX 112-158

  • Ownership

    ALASKA KARDEX 112-162

  • Reserve-Resource

    DGGS IC 35, P. 10, 1992

  • Reserve-Resource

    HECLA'S WEBSITE, 4/23/97.

  • Reserve-Resource

    RTZ-CRA 1996 ANNUAL REPORT ON FORM 20-F, PP. 11, 13, 17-18,

  • Reserve-Resource

    44-45.

  • Reserve-Resource

    RTZ-CRA FACT BOOK, 1997, PP. 2-3, 5, 21-22, 34.

  • Deposit

    REFERENCES BELOW WERE ENTERED BY AFOC OR WFOC BEFORE 1996;

  • Deposit

    SOME OF THE CODES ARE UNKNOWN AT THIS TIME; (MAY, 97); SOME

  • Deposit

    ARE KNOWN:

  • Deposit

    SRI

  • Deposit

    E&MJ, MAY, 1979, P 84, No. 221.

  • Deposit

    AK ECON RPT 790515

  • Deposit

    OF81-122

  • Deposit

    AMR 81-82 pp. 12, 25

  • Deposit

    MTA 82 No. F-28

  • Deposit

    E&MJ, JUNE, 1983, P 40,

  • Deposit

    SR31 pp. 1, 14

  • Deposit

    SR33 p. 18

  • Deposit

    SR38 pp. 14, 18, 46

  • Deposit

    AK MINE LICENSE-1985

  • Deposit

    SR39 p. 15-16,

  • Deposit

    SR40 p. 16

  • Deposit

    BM YEARBOOK 1977 p. 62

  • Deposit

    BM YEARBOOK 1978-79 p. 47-48

  • Deposit

    BM YEARBOOK 1980 p. 48

  • Deposit

    BM YEARBOOK 1981 p. 53

  • Deposit

    BM YEARBOOK 1982 p. 48

  • Deposit

    BM YEARBOOK 1983 p. 55-56

  • Deposit

    BM YEARBOOK 1984 p. 63

  • Deposit

    BM YEARBOOK 1985 p. 57

  • Deposit

    BM YEARBOOK 1986 p. 52

  • Deposit

    EIS GREENS CREEK 1983346 pp.

  • Deposit

    EA GREENS CREEK 1988 82 pp.

  • Deposit

    E&MJ 8306 p. 40

  • Deposit

    SR38 pp. 18, 46

  • Deposit

    SR41 p. 21

  • Deposit

    B1181R pp. 10-16

  • Deposit

    CRU ZINC MONITOR-SEPTEMBER 1996

  • Deposit

    MINING RECORD. "JV APPROVES REDEVELOPMENT OF GREENS CREEK

  • Deposit

    MINE". V106/N21. 5/24/95. P.1.

  • Deposit

    MINING RECORD, "ALASKA; HECLA MINING RECOMMENCES OPERATIONS

  • Deposit

    AT GREENS CREEK", VOL 107, #32, AUG., 7 1996, PP. 1, 3.

  • Deposit

    THE MINING RECORD, VOL 107, #44, OCT., 30, 1996, P5.

  • Deposit

    THE NORTHERN MINER, 10/30/96, P5.

  • Deposit

    THE MINING RECORD, VOL 107, #49, DEC 4, 1996, P19.

  • Deposit

    THE MINING RECORD, SEPT., 4, 1996, P7.

  • Deposit

    HECLA'S 1995 10-K, P? AND ANNUAL REPORTS, P20.

  • Deposit

    RANDOL MINING DIRECTORY, 1996/97, PP. 122, 601, 602, 701,702

Reporter information

Type Date Name Affiliation Comment
Reporter 09-SEP-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 Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.