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Sumdum Chief Gold Mine

Past Producer in Alaska, United States with commodities Gold, Silver, Zinc, Lead, Copper
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10101000
MRDS ID A013337
Record type Site
Current site name Sumdum Chief Gold Mine
Alternate or previous names Sumdum Chief, Lone Tree, Bald Eagle, New Racket, Golden Slipper Claims
Related records 10209478

Geographic coordinates

Geographic coordinates: -133.48277, 57.64475 (WGS84)
Elevation 488
Relative position 1.85 MI. S OF SANFORD COVE

Site location context

Political divisions (FIPS codes)

Hoonah-Angoon(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sumdum C-5(quadrangle 1:63,360 scale)

Sumdum N(quadrangle 1:100,000 scale)

Sumdum(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

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)

Chuck River Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS B 1525, FIG. 53, 54, 55. LOCATION IS AT ENTRANCE TO SUMDUM CHIEF VEIN STOPE LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

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

Materials information

Materials Type of material
Chalcopyrite Ore
Sphalerite Ore
Pyrite Gangue
Quartz Gangue

Analytical data

Result BALD EAGLE VEIN ORE ASSAYED UP TO 0.73 OZ/TON AU. ORE MINED AT AVERAGE OF GRADE OF 0.39 OZ/TON AU. 1 FT. LONG CHIP SAMPLE (4S365) ON UPPER PART OF SUMDUM CHIEF VEIN ASSAYED 0.76 OZ/TON AU, 0.88 OZ/TON AG, 3,100 PPM ZN, 1,900 PPM PB, 940 PPM CU-USGS B 1525, P. 159, 160.

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -133.48277, 57.64475
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Limestone Strikes N 16 Degrees W, Dips 81 Degrees N

Ore body information

  • Strike N 80 DEGREES E
    Dip 84 DEGREES N
    Thickness 365.76M
    Length 1066.8M
    Width 6.1M
    Depth to bottom 365.76M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1889
Year of first production 1894
Year of last production 1903

Mining district

District name Petersburg

Land status

Ownership category National Forest

Workings at the site

  • Type of workings Surface
    Length 1066.8M
    Overall depth 365.76M
    Overall length 1066.8M

Comments on the workings information

  • 3,500 FT. HAULAGE DRIFT WITH 1,600 FT. RAISE DRIVEN FROM END OF DRIFT. AERIAL TRAM CONNECTS MAIN PORTAL WITH MILL, AND 1 MI. OF ROAD AND SURFACE TRAMWAY. ALL ARE NEARLY OBLITERATED, AND MAIN PORTAL OF MINE IS CAVED (AS OF 1984).

Comments on development

  • BALD EAGLE MINING CO. FORMED IN 1893, PRODUCTION STARTED IN 1894, CONTINUED UNTIL 1903. SUMDUM MINING CO. FORMED IN 1899. MINE CLOSED IN 1903 AFTER ORE BODY MINED OUT.

Reference information

Bibliographic references

  • Deposit

    USGS B 1525, P. 157-162, FIGS. 53-55 (1984)

  • Deposit

    USGS OF 78-698, P. 30, 31 (1978)

  • Deposit

    USBM OFR 91-86, P. 14-24 (1986)

  • Other Database

    BAG-B-1525-FIGS-53, 54, 55

General comments

Subject category Comment text
Deposit TWO QUARTZ VEINS IN FISSILE GRAPHITIC LIMESTONE. SUMDUM CHIEF VEIN STRIKES N 80 DEGREES E AND DIPS 84 DEGREES N; AND IS 3 FT. WIDE AT SURFACE BUT NARROWS TO VEIN FILLING WHERE INTERSECTED BY DRIFT AT 1,200 FT.. BALD EAGLE VEIN IS 2 FT. WIDE AT SURFACE AND WIDENS TO 20 FT. WHERE INTERSECTED BY DRIFT AT 500 FT.. AT THAT DEPTH ORE GRADE IS ONLY 0.05-0.10 OZ/TON AU, WHICH WAS TOO UNECONOMICAL TO MINE. VEINS CONTAIN MINOR PYRITE, SPHALERITE, GALENA, CHALCOPYRITE, AND GOLD IN DISSEMINATED FINE GRAINS. GOLD APPEARS TO HAVE BEEN INTRODUCED WITH QUARTZ AND OTHER SULFIDES, AND IS INTERGRANULAR WITH QUARTZ, OFTEN FORMING ADJACENT TO SULFIDES.
Deposit CRONEY PROSPECT CLAIM ADJOINS SUMDUM CHIEF CLAIM. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1987 Niles, L.P. (Huber, D.F.) U.S. Geological Survey

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.