Keystone

Past Producer in Alaska, United States with commodities Cobalt, Copper, Silver, Zinc

Geologic information

Identification information

Deposit ID 10282851
MAS/MILS ID 0020960071
Record type Site
Current site name Keystone
Alternate or previous names Threeman Copper Cop, Discovery, Scorcher, Jay, Redemption, Climax Ajax, Cliff, Montezuma, Steckmest, Petersen, Daisy, Buckeye, Threeman

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -146.54034, 60.85379 (WGS84)
Elevation 116
Location accuracy 100(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Public Land Survey System information

Meridian Township Range Section Fraction State
Copper River 012 S 007 W 06 SENESW Alaska

Commodities

Commodity Importance
Cobalt Tertiary
Copper Primary
Silver Tertiary
Zinc Tertiary

Nearby scientific data

Main Entrance (1) -146.54034, 60.85379

Ore body information

  • Strike N60W
    Dip 35N
    Width 5.5M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 TABULAR
    Type of Orebody #3 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N60W
    Date of Last Modification 881017
  • Strike N75W
    Dip 65N
    Length 107M
    Field Value
    MAS Matrix # 2
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 REPLACEMENT
    Shape of Orebody #2 TABULAR
    Type of Orebody #3 DISSEMINATED
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control FAULTING
    Secondary Ore Control FOLDING
    Degree of Wallrock Alter. UNKNOWN
    Type of Wallrock Alter. #1 UNKNOWN
    Strike And Dip N75W
    Date of Last Modification 881017

Comments on the geologic information

  • SCHIST SHEAR ZONES CARRY CHALCOPYRITE AND PYRRHOTITE. COUNTRY ROCK GREENSTONE, GRAYWACKE, AND SLATE. Workings consist of: Level 0 - 116.1 m. elev. - 18.3 m. of workings; Level 1 - 100.6 m. elev. - 18.3 m. of workings; Level 2 - 77.1 m. elev. - 152.4 m. of workings; Level 3 - 57.3 m. elev. - 76.2 m. of workings; Level 4 - 41.8 m. elev. - Caved; Level 5 - 21.3 m. elev. - 2 caved portals.

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No

Mineral rights holdings

Type of mineral rights Patented
Type of mineral rights Located Claim

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner John Petersen
    ID 5050005
    Year 1978

Production statistics

  • Year 1904
    Description Copper Output 1359 Kilograms
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 1mt
  • Year 1906
    Description Copper Output 5300 Kilograms
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 5mt
  • Year 1910
    Description Copper Output 54360 Kilograms
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 54mt
  • Year 1911
    Description Copper Output 78800 Kilograms
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 79mt
  • Year 1911
    Description Gold Output 14 Ounces
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Gold Gold 435g
  • Year 1911
    Description Silver Output 608 Ounces
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 18,911g
  • Year 1912
    Description Copper Output 272253 Kilograms
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 272mt
  • Year 1912
    Description Gold Output 48 Ounces
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Gold Gold 1,493g
  • Year 1912
    Description Silver Output 3300 Ounces
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 102,641g
  • Year 1915
    Description Copper Output 113250 Kilograms
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 113mt
  • Year 1915
    Description Gold Output 30 Ounces
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Gold Gold 933g
  • Year 1915
    Description Silver Output 1400 Ounces
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 43,545g
  • Year 1915
    Period 1904-1915
    Description Total Copper Output 1904-1915 525326 Kilograms
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 525mt
  • Year 1915
    Period 1904-1915
    Description Total Gold Output 1904-1915 101 Ounces
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Gold Gold 3,141g
  • Year 1915
    Period 1904-1915
    Description Total Silver Output 1904-1915 5308 Ounces
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 165,097g

Reserves and resources

  • Type In-situ
    Estimate year 1984
    Inferred 2,651mt ore
    Total resources 2,651mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 2.3699 wt-pct Copper Major 1984
    Zinc Zn 0.35 wt-pct Zinc Trace 1984
  • Type In-situ
    Estimate year 1984
    Inferred 2,096,560mt ore
    Total resources 2,096,560mt ore
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 1.05 wt-pct Copper Major 1984
    Zinc Zn 0.19 wt-pct Zinc Trace 1984

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0020960071
Mine Safety and Health Administration MSHA MSHA 5050005

Bibliographic references

  • Ownership

    ALASKA KARDEX 096-048

  • Deposit

    B379e p. 95

  • Deposit

    B442h p. 165

  • Deposit

    B443 pp. 52, 54-55, 61-62

  • Deposit

    B520c p. 27

  • Deposit

    B542g pp. 97, 101-102, 108-110

  • Deposit

    B592d p. 62

  • Deposit

    B592k p. 241

  • Deposit

    B605 pp. 14, 51, 56-57, 61, 70-96

  • Deposit

    B642g p. 138

  • Deposit

    BMB142 pp. 43, 52

  • Deposit

    BMB153 p. 50

  • Deposit

    B662h pp. 184, 186

  • Deposit

    B692g pp. 144, 148

  • Deposit

    B712a p. 33

  • Deposit

    B739a p. 24

  • Deposit

    B963B p. 57

  • Deposit

    B989E pp. 298, 302

  • Deposit

    RI5245 pp. 1, 5-6

  • Deposit

    RI5320 pp. 3, 5-7, 16, 19-21

  • Deposit

    I453

  • Deposit

    B1246 pp. 69-70

  • Deposit

    MF392

  • Deposit

    OF79-973 75 pp.

  • Deposit

    MR32

  • Deposit

    OF82-1029

  • Deposit

    B1139 363 pp.

  • Deposit

    MIRL 27 p. 58

  • Deposit

    BMOF83-81 229 pp.

  • Deposit

    B622i pp. 131-139

  • Deposit

    B773e pp. 141-158

  • Deposit

    BMOF69-73

  • Deposit

    PE96-3 20 pp.

  • Deposit

    MLA5-84 218 pp., (Locality C-73)

Reporter information

Type Date Name Affiliation Comment
Reporter 17-OCT-1988 Wlg U.S. Bureau of Mines