Lewis River

The Lewis River is a gold mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Lewis River

Commodity

Primary: Gold

Location

State: Alaska
District: Redoubt

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Model Name: Placer Au-PGE

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Not available

Comments

Comment (Production): Production Notes = According to Brooks (1918, p. 45-47), seven small placer operations operated in 1916 in the canyon between upper basin and the flats and produced over $2,000 in gold (worth $18.66 an ounce). One $2 nugget was found. Unknown but probably small amount of gold recovered in 1956-57 (Cobb, 1973, B 1374, p. 17).

Comment (Exploration): Status = Probably inactive

Comment (Geology): Age = Quaternary

Comment (Deposit): Model Name = Placer gold(Cox and Singer, 1986; model 39a)

Comment (Reference): Primary Reference = Cobb, 1973 (B 1374)

Comment (Geology): Geologic Description = MacKevett and Holloway (1977, locality 9) describe mined areas extending three to six miles downstream from the landing strip located near the head of the Lewis River on the west side of Mt. Susitna. Stream gravel carry coarse angular gold with attached quartz. Cobb (1979, OFR 80-86, p. 17-18) reports that gold is probably derived from quartz veins in local Jurassic or Cretaceous granitic bedrock or from reworked Tertiary conglomerate. Drilling for possible dredging was done in the early 1900's. Placer mining was active mostly before 1918. Bedrock is 12 to 22 feet below surface. According to Brooks (1918, p. 45-47), seven small placer operations operated in 1916 in the canyon between upper basin and the flats and produced over $2,000 in gold (worth $18.66 an ounce). One $2 nugget was found. An unknown but probably small amount of gold recovered in 1956-57 (Cobb, 1973, B 1374, p. 17).

Comment (Workings): Workings / Exploration = Placer mining was active mostly before 1918. Drilling for possible dredging was done in the early 1900's. Bedrock is 12 to 22 feet below surface.

References

Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

Reference (Deposit): U.S. Bureau of Mines, 1998, Minerals Availability System/Minerals Industry Location System (MAS/MILS), Talkeetna Quadrangle: Worldwide Web URL http://imcg.wr.usgs.gov/data.html.
URL: http://imcg.wr.usgs.gov/data.htm

Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than minerals fuels and construction materials) in the Kenai and Tyonek Quadrangles, Alaska: U.S. Geological Survey Open-File Report 80-86, 36 p.

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

Reference (Deposit): Brooks, A.H., 1918, Mineral resources of Alaska, 1916: U.S. Geological Survey Bulletin 662, 469 p.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Tyonek quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-385, 1:250,000 scale.

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