Extra Dry Creek

Past Producer in Alaska, United States with commodity Gold

Geologic information

Identification information

Deposit ID 10002082
MRDS ID A012939
Record type Site
Current site name Extra Dry Creek

Geographic coordinates

Geographic coordinates: -165.28716, 64.56512 (WGS84)
Relative position This alluvial gold placer mine is on Extra Dry Creek, an east tributary to Nome River. The map location is at about the midpoint of the creek, just northwest of the center of section 4, T. 11 S., R. 33 W., Kateel River Meridian. It is locality 119 of Cobb (1972 [MF 463], 1978 [OFR 78-93]).
(click for info)

Geographic areas

Country State
United States Alaska


Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

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) -165.28716, 64.56512

Comments on the geologic information

  • Geologic Description = The alluvial gold placer deposit in the upper canyon of Extra Dry Creek was worked by hand and produced about 1,000 ounces of gold between 1900 and 1903 (Brooks and others, 1901; Collier and others, 1908). The unconsolidated deposits about one-half mile below the head of the creek included, top to bottom, 1 foot of muck, 1 foot of sandy clay, and 6 feet of schist and quartz gravel on bedrock; pay was in the lower 2 feet of gravel. Some coarse gold was recovered; the largest nugget found in 1900 was about 0.6 ounce (Brooks and others, 1901; Moffit, 1913). Bedrock has been mapped as mica schist containing marble interlayers (Brooks and others, 1901; Moffit, 1913), mainly metagranodiorite (Hummel, 1962 [MF 247]), and mainly porphyroclastic micaceous graphitic schist and graphitic quartz schist (Bundtzen and others, 1994). The gold possibly had a local bedrock source; it apparently becomes finer grained downstream. Some of the gold had attached quartz (Collier and others, 1908, p. 176).
  • 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 Nome

Comments on the production information

  • Production Notes = About 1,000 ounces of gold were recovered from this creek between 1900 and 1903 (Collier and others, 1908; Moffit, 1913). Lower grade deposits may have been mined on the lower creek in later years, but records of ny such production are not available.

Comments on the workings information

  • Workings / Exploration = Extra Dry Creek was worked by shovel-in or rocker methods from 1900 until about 1905. Moffit (1913) thought that the creek was worked out by about 1905 or 1906. Tailings along the creek down to the Nome River road and suggest that the lower part of the creek was worked mechanically in later years.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012939
USGS Alaska Resource Data File ARDF NM260

Bibliographic references

  • Deposit

    Brooks, A.H., Richardson, G. B., and Collier, A. J., 1901, Reconnaissance in the Cape Nome and Norton Bay regions, Alaska, in 1900: U.S. Geological Survey Special Publication, p. 1-180.

  • Deposit

    Collier, A. J., Hess, F.L., Smith, P.S., and Brooks, A.H., 1908, The gold placers of parts of Seward Peninsula, Alaska, including the Nome, Council, Kougarok, Port Clarence, and Goodhope precincts: U.S. Geological Survey Bulletin 328, 343 p.

  • Deposit

    Moffit, F.H., 1913, Geology of the Nome and Grand Central quadrangles, Alaska: U.S. Geological Survey Bulletin 533, 140 p.

  • Deposit

    Hummel, C.L., 1962, Preliminary geologic map of the Nome C-1 quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-247, 1 sheet, scale 1:63,360.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Nome quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-463, 2 sheets, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Nome quadrangle, Alaska: U.S. Geological Survey Open-File report 78-93, 213 p.

  • Deposit

    Bundtzen, T.K., Reger, R.D., Laird, G.M., Pinney, D.S., Clautice, K.H., Liss, S.A., and Cruse, G.R., 1994, Progress report on the geology and mineral resources of the Nome mining district: Alaska Division of Geological and Geophysical Surveys, Public Data-File 94-39, 21 p., 2 sheets, scale 1:63,360.

Comments on the references

  • Primary Reference = Collier and others, 1908

General comments

Subject category Comment text
Deposit Model Name = Alluvial placer Au (Cox and Singer, 1986; model 39a).

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUL-00 Hawley, C.C. Hawley Resource Group
Reporter 10-JUL-00 Travis L. Hudson Hawley Resource Group