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Flagstaff Mining Co.

Past Producer in Alaska, United States with commodities Gold, Silver, Copper, Lead, Zinc
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Geologic information

Identification information

Deposit ID 10000038
MRDS ID A010040
Record type Site
Current site name Flagstaff Mining Co.
Alternate or previous names Treasure, Last Chance
Related records 10161564

Geographic coordinates

Geographic coordinates: -132.66431, 55.53584 (WGS84)
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Geographic areas

Country State
United States Alaska

Commodities

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

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Copper Ore
Covellite Ore
Galena Ore
Gold Ore
Pyrite Ore
Sphalerite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -132.66431, 55.53584
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Ore body information

  • Strike N 55 W
    Dip GONE TO 86 NE
    Thickness 0.91M
    Length 1609.3M

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1900
Year of last production 1941

Mining district

District name Ketchikan District

Land status

Ownership category State

Workings at the site

  • Type of workings Surface/Underground
    Length 396.24M

Comments on development

  • PRODUCTION FIGURES ARE UNKNOWN

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010040

Bibliographic references

  • Deposit

    USGS BULL 284, P. 41-42.

  • Deposit

    USGS BULL 642, P. 80-81.

  • Deposit

    USGS BULL 933-A, P. 18-19.

  • Deposit

    USGS BULL 963-A, P. 10-13.

  • Deposit

    ADGGS SPECIAL REPORT 1, P. 8-9.

  • Deposit

    USGS OF 78-869, P. 64-65.

  • Deposit

    USGS MF 433.

General comments

Subject category Comment text
Deposit ORE MILLED IN 1939 YIELDED 10.5 LBS. CU AND 1.6 LBS PB PER TOZ AU, AG: AU RATIO WAS 7:1 ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1983 Hirschmann, M. M. (Elliott, R. L.) U.S. Geological Survey