Ketchem Dome Area

Producer in Alaska, United States with commodities Gold, Silver, Mercury, Tin, Tungsten

Geologic information

Identification information

Deposit ID 10000548
MRDS ID A010753
Record type Site
Current site name Ketchem Dome Area

Geographic coordinates

Geographic coordinates: -144.87792, 65.4078 (WGS84)
Relative position The location is roughly the center of a productive placer area of approximately 80 square miles. It includes the following main drainages: Deadwood Creek, Ketchem Creek and Bottom Dollar Creek.
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Geographic areas

Country State
United States Alaska


Commodity Importance
Gold Primary
Silver Secondary
Mercury Secondary
Tin Secondary
Tungsten Secondary

Materials information

Materials Type of material
Cassiterite Ore
Cinnabar Ore
Gold Ore
Scheelite Ore
Silver Ore

Mineral occurrence model information

Model code 119
USGS model code 39a
BC deposit profile C01. C02
Deposit model name Placer Au-PGE
Mark3 model number 54

Nearby scientific data

(1) -144.87792, 65.4078

Comments on the geologic information

  • Geologic Description = The creeks around Ketchem Dome drain a variety of rock types. To the north and northeast of Ketchem Dome, Ketchem and Holdem Creeks drain an area underlain by Tertiary granite. To the south, the Bottom Dollar Creek drainage is underlain by both Cretaceous granite and quartz-muscovite schist - the Lower Schist unit desribed by Wiltse and others (1995). Deadwood Creek drainage to the northwest is underlain both by Tertiary granite and the quartz-muscovite Lower Schist.? Gold is found in the gravel close to bedrock and in cracks in the bedrock. Placer gold has been mined on several creeks within this area that have been described separately (see Workings and Exploration).

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic

Comments on exploration

  • Status = Active

Mining district

District name Circle

Comments on the production information

  • Production Notes = See Ketchem Creek, ARDF no. CI031, Bottom Dollar Creek, ARDF no. CI007 and Deadwood Creek, ARDF no. CI014 for specific site-production notes.

Comments on the workings information

  • Workings / Exploration = See Ketchem Creek, ARDF no. CI031, Bottom Dollar Creek, ARDF no. CI007 and Deadwood Creek, ARDF no. CI014 for site-specific workings and exploration.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010753
USGS Alaska Resource Data File ARDF CI033

Bibliographic references

  • Deposit

    Cobb, E.H., 1973, Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 p.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-633, 72 p.

  • Deposit

    Wiltse, M.A., Reger, R.D., Newberry, R.J, Pessel, G.H., Pinney, D.S., Robinson, M.S., and Solie, D.N., 1995, Bedrock geologic map of the Circle mining district, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 95-02b, 1 sheet, scale 1:63,360.

Comments on the references

  • Primary Reference = Cobb, 1973, B 1374.

General comments

Subject category Comment text
Deposit Model Name = Placer gold deposit (Cox and Singer, 1986; model 39a)
Deposit Other Comments = See also Ketchem Creek, ARDF no. CI031, Bottom Dollar Creek, ARDF no. CI007 and Deadwood Creek, ARDF no. CI014.

Reporter information

Type Date Name Affiliation Comment
Reporter 09-SEP-98 C.J. Freeman Avalon Development Corporation
Reporter 09-SEP-98 J.R. Guidetti Schaefer Avalon Development Corporation
Reporter 09-SEP-98 Clements, A.S. Avalon Development Corporation