Lower Dahl Creek

Past Producer in Alaska, United States with commodities Gold, Jade

Geologic information

Identification information

Deposit ID 10100965
MRDS ID A011877
Record type Site
Current site name Lower Dahl Creek

Geographic coordinates

Geographic coordinates: -156.88844, 66.95647 (WGS84)
Relative position The lower Dahl Creek placer deposit is about 3/4 mile north of the Dahl Creek landing strip and about 4 miles by road from Kobuk. The deposit, which extends for about a mile along the creek, is in sections 15, 16, and 21, T. 18 N., R. 9 E., of the Kateel River Meridian. Mayfield and Grybeck (1978), location 30.
(click for info)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Jade Secondary

Materials information

Materials Type of material
Gold 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

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel

Nearby scientific data

(1) -156.88844, 66.95647

Comments on the geologic information

  • Geologic Description = At the lower Dahl Creek placer deposit, gold occurs on false bedrock or in glacial drift commonly less than 10 ft. below the surface. The gold is irregularly distributed through the gravel. The gold is fairly coarse but with few nuggets. It was worth about $16.50 per ounce in 1931. Where the stream valley opens into the Kobuk Valley three shafts were sunk through glacial till, two to 25 feet and one to 80 feet. These test holes went through alternating beds of sand and gravel dipping slightly to the south and failed to reach bedrock. Fine colors of gold were found in the sand and gravel in all the holes, but no regular paystreak was found. One-half mile below the mouth of the canyon the depth to bedrock varies from 2 to 8 feet. Two lines, at 500 foot spacing, of three shafts each cross the stream valley in this area. The shafts were sunk to 25 feet and did not reach bedrock. Gold reportedly occurs in a paleo-channel. The ground mined in this area was estimated to yield about $1.02 per cubic yard (Reed, 1931).? Bedrock in the area consists of conglomeratic metasediments and black phyllite of early to mid-Paleozoic age. The black phyllite is cut by numerous quartz veins. Stream gravel is medium fine, containing well waterworn pieces up to 2 inches in diameter. Distributed throughout the gravel are numerous large boulders of greenstone or metamorphosed conglomerate, and an occasional boulder of gneissic granite (Reed, 1931).
  • Age = Quaternary.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Shungnak

Comments on the production information

  • Production Notes = Total production from Dahl Creek (also see ARDF number SH003) is estimated to be 15,000 ounces to more than 17,000 ounces (Degenhart and others, 1978).

Comments on the workings information

  • Workings / Exploration = Gold was first discovered in 1898 and the claims have been worked more or less consistently up to 1968. Starting in 1950, nephrite boulders were recovered during the mining process. This continued into the early 1970's. In 1988 and 1989 NANA took jig samples from each of the claim blocks in an attempt to complete a patenting application on the claims. These data are available by request from NANA Regional Corp.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011877
USGS Alaska Resource Data File ARDF SH002

Bibliographic references

  • Deposit

    Brooks, A.H., 1909, The mining industry in 1908: U.S. Geological Survey Bulletin 379-A, p. 21-62.

  • Deposit

    Brooks, A.H., 1910, Mineral resources of Alaska, report on progress of investigations in 1909: U.S. Geological Survey Bulletin 442, 426 p.

  • Deposit

    Smith, P.S. and Eakin, H.M., 1911, Mineral resources of Alaska 1910: U.S. Geological Survey Bulletin 480, 333 p..

  • Deposit

    Brooks, A.H., 1912, The Alaska mining industry in 1911, in Brooks, A.H., and others, Mineral resources of Alaska, 1911: U.S. Geological Survey Bulletin 520, p. 17-44.

  • Deposit

    Brooks, A.H., 1914, Mineral resources of Alaska in 1913: U.S. Geological Survey Bulletin 592, p. 340-341.

  • Deposit

    Brooks, A.H., 1916, Antimony deposits of Alaska: U.S. Geological Survey Bulletin 649, 67 p.

  • Deposit

    Martin, G.C., 1919, Alaska Mining Industry in 1917: U.S. Geological Survey Bulletin 692, p. 11-42

  • Deposit

    Brooks, A.H., and Martin, G. C. 1921, The Alaska mining industry in 1919: U.S. Geological Survey Bulletin 714, p. 59-95.

  • Deposit

    Brooks, A.H., 1922, The Alaska mining industry in 1920: U.S. Geological Survey Bulletin 722-A, p. 1-74.

  • Deposit

    Brooks, A.H. and Capps, S.R., 1924, Mineral industry in Alaska, 1922: U.S. Geological Survey Bulletin 755, p. 1-56.

  • Deposit

    Brooks, A.H., 1925, Alaska's mineral resources and production, 1923: U.S. Geological Survey Bulletin 773, p. 3-52.

  • Deposit

    Smith, P.S., 1929, Mineral industry of Alaska in 1926: U.S. Geological Survey Bulletin 797, p. 1-50.

  • Deposit

    Smith, P.S., 1930, Mineral industry of Alaska in 1927: U.S. Geological Survey Bulletin 810-A, p. 1-64.

  • Deposit

    Smith, P.S., 1930, Mineral industry of Alaska in 1928: U.S. Geological Survey Bulletin 813, p. 1-72.

  • Deposit

    Smith, P.S., and Mertie, J.B., Jr., 1930, Geology and mineral resources of northwestern Alaska: U.S. Geological Survey Bulletin 815, 315 p.

  • Deposit

    Smith, P.S., 1932, Mineral industry of Alaska in 1929, in Smith, P.S., and others Mineral resources of Alaska, report on progress of investigations in 1929: U.S. Geological Survey Bulletin 824-A, p. 1-81.

  • Deposit

    Smith, P.S., 1933, Mineral industry of Alaska in 1930: U.S. Geological Survey Bulletin 836, p. 1-83.

  • Deposit

    Smith, P.S., 1933, Mineral industry in Alaska in 1931: U.S. Geological Survey Bulletin 844-A, p. 1-82.

  • Deposit

    Smith, P.S., 1934, Mineral industry of Alaska in 1932: U.S. Geological Survey Bulletin 857-A, p. 1-91.

  • Deposit

    Smith, P.S., 1934, Mineral industry of Alaska in 1933: U.S. Geological Survey Bulletin 864-A, p. 1-94.

  • Deposit

    Smith, P.S., 1936, Mineral industry in Alaska in 1934: U.S. Geological Survey Bulletin 868-A, p. 1-91.

  • Deposit

    Smith, P.S., 1937, Mineral industry in Alaska in 1935: U.S. Geological Survey Bulletin 880-A, p. 1-95.

  • Deposit

    Smith, P.S., 1938, Mineral industry of Alaska in 1936: U.S. Geological Survey Bulletin 897-A, p. 1-107.

  • Deposit

    Smith, P.S., 1939, Mineral industry of Alaska in 1937: U.S. Geological Survey Bulletin 910-A, p. 1-113.

  • Deposit

    Smith, P.S., 1939, Mineral industry of Alaska in 1938: U.S. Geological Survey Bulletin 917-A, p. 1-113.

  • Deposit

    Anderson, Eskil, 1945, Asbestos and jade occurrences in the Kobuk River region, Alaska: Alaska Territorial Department of Mines Pamphlet 3-R, 48 p.

  • Deposit

    Anderson, Eskil, 1947, Mineral occurrences other than gold deposits in northwestern Alaska: Alaska Territorial Division of Mines Pamphlet 5-R, 48 p.

  • Deposit

    Fritts, C.E., 1969, Geology and geochemistry in the southeastern part of the Cosmos Hills, Shungnak D-2 quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Geological Report 37, 35 p., 2 sheets, scale 1:48,000.

  • Deposit

    Fritts, C.E., 1970, Geology and geochemistry of the Cosmos Hills, Ambler River and Shungnak River Quadrangles, Alaska: Alaska Division of Geological and Geophysical Surveys Geological Report 39, 63 p., 4 sheets, scale 1:63,360.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources of the Shungnak quadrangle, Alaska: USGS Miscellaneous Field Studies Map MF-448, 1 sheet, scale 1:250,000.

  • Deposit

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

  • Deposit

    Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in five quadrangles in west central Alaska (Hughes, Kotzebue, Melozitna, Selawik and Shungnak): U.S. Geological Survey Open-File Report 75-627, 58 p.

  • Deposit

    Cobb, E.H., 1977, Placer deposit map of central Alaska: U.S. Geological Survey Open-File Report 77-168B, 64 p., 1 map, scale 1:1,000,000.

  • Deposit

    Grybeck, D.J., 1977, Known mineral deposits of the Brooks Range, Alaska: US Geological Survey Open-File Report 77-166C, 41 p., 1 sheet, scale 1:1,000,000.

  • Deposit

    Degenhart, C.E., Griffis, R.J., McQuat, J.F., and Bigelow, C.G., 1978, Mineral studies of the western Brooks Range performed under contract to the U.S. Bureau of Mines, Contract #JO155089: U.S. Bureau of Mines Open-File Report 103-78, 529 p., 11 sheets.

  • Deposit

    Mayfield, C.F. and Grybeck, D., 1978, Mineral occurrences and resource map of the Ambler river quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-120I, 1 sheet, scale 1:250,000.

  • Deposit

    WGM Staff, 1980, Non-fuel mineral resources of Alaska: Anchorage, Alaska, WGM, Inc. Unpublished report for Phillips Petroleum Company, 320 p. (Report held by NANA Regional Corporation, Anchorage, Alaska).

  • Deposit

    Smith, P.S., 1933, Mineral industry of Alaska in 1930: U.S. Geological Survey Bulletin 836-A, p. 1-83.

  • Deposit

    Smith, P.S., 1933, Mineral industry of Alaska in 1931: U.S. Geological Survey Bulletin 844-A, p. 1-81.

  • Deposit

    Smith, P.S., 1941, Mineral industry of Alaska in 1939: U.S. Geological Survey Bulletin 926-A, p. 1-106.

  • Deposit

    Smith, P.S., 1942, Mineral industry of Alaska in 1940: U.S. Geological Survey Bulletin 933-A, p. 1-102.

  • Deposit

    Smith. P.S., 1913, The Noatak-Kobuk region, Alaska: U.S. Geological Survey Bulletin 536, 60 p.

  • Deposit

    Reed, I.M., 1931, Report on the placer deposits of the upper Kobuk goldfields: Alaska Territorial Department of Mines Miscellaneous Report 37-1, 57 p.

  • Deposit

    Smith, P.S., 1930, Mineral industry of Alaska in 1928: U.S. Geological Survey Bulletin 813-A, p. 1-72.

  • Deposit

    Moffit, F.H., 1927, Mineral industry in Alaska in 1925: U.S. Geological Survey Bulletin 792-A, p. 1-39.

  • Deposit

    Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in five quadrangles in west central Alaska (Hughes, Kotzebue, Melozitna, Selawik, Shungnak): U.S. Geological Survey Open-File Report 75-627, 58 p.

  • Deposit

    Coats, R.R., 1944, Asbestos deposits of the Dahl Creek area, Kobuk River district, Alaska: U.S. Geological Survey Open-File Report, 4 p.

Comments on the references

  • Primary Reference = Reed, 1931

General comments

Subject category Comment text
Deposit Model Name = Placer Au-PGE (Cox and Singer, 1986; model 39a).
Deposit Other Comments = Dahl Creek was the main placer gold producer in the district. Nephrite boulders were recovered from stream gravels during placer mining starting in the 1950's. Nephrite was produced from the creek up to the 1970's. The land is owned by NANA Regional Corporation.

Reporter information

Type Date Name Affiliation Comment
Reporter 16-DEC-99 Williams, Anita U.S. Geological Survey