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Iron Creek

Past Producer in Alaska, United States with commodity Gold
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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. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10002568
MRDS ID A015002
Record type Site
Current site name Iron Creek
Related records 10209015

Geographic coordinates

Geographic coordinates: -156.85329, 63.40388 (WGS84)
Relative position Iron Creek is a small, west-flowing tributary to Eldorado Creek. There is some uncertainty about which tributary of Eldorado Creek is Iron Creek. Harrington (1919) shows Iron Creek as entering Eldorado Creek a considerable distance from the mouth of Eldorado Creek. A local prospector (Doug Clark, oral commun., 2001) confirms this and claims that Iron Creek is the eastern headwater tributary of Eldorado Creek. The junction of this tributary and Eldorado Creek is approximately three miles from the mouth of Eldorado Creek. Iron Creek is locality 3 of Cobb (1972 [MF 367]); his location is at least two miles south of the mouth of Eldorado Creek and two miles east of Eldorado Creek. The current (1954/1965) U.S. Geological Survey Ophir B-2 topographic map shows Iron Creek near the mouth of Eldorado Creek. For this record, the coordinates are at the approximate midpoint of Iron Creek as described by Harrington (1919) and Clark, in sec. 13, T. 24 S., R. 10 E., Kateel River Meridian. The location is accurate within 5 miles.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ophir B-2(quadrangle 1:63,360 scale)

Ophir SE(quadrangle 1:100,000 scale)

Ophir(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel
    Stratigraphic age (youngest) Holocene
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -156.85329, 63.40388
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Bedrock in the vicinity of Iron Creek consists of volcanic rocks; a monzonite intrusion underlies its headwaters (Chapman and others, 1985; S. Dashevsky, unpublished data, 2000). Gravel in Iron Creek consists of phyllitic rocks and granite, overlain by four feet of muck (Harrington, 1919). There was some placer mining in Iron Creek by 1917 (Harrington, 1919). Small-scale prospecting has occurred since that then.? Also see OP007-009.
  • Age = Quaternary. The source of the placer gold is probably a Cretaceous or Tertiary monzonite intrusion in the headwaters of Iron Creek (Bundtzen and others, 1987).

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Mining district

District name Innoko

Comments on the workings information

  • Workings / Exploration = Gold mining along Iron Creek was underway by 1917 (Harrington, 1919). Small-scale prospecting has occurred since then.

Reference information

Bibliographic references

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Ophir quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-367, 1 sheet, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction material) in the Iditarod and Ophir quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-576, 101 p.

  • Deposit

    Chapman, R.M., Patton, W.W., and Moll, E.J., 1985, Reconnaissance geologic map of the Ophir quadrangle, Alaska: U.S. Geological Survey Open-File Report 85-203, 1 sheet, 1:250,000 scale.

  • Deposit

    Bundtzen, T.K., Green, C.B., Deagen, J., and Daniels, C.L., 1987, Alaska's mineral industry, 1986: Alaska Division of Geological and Geophysical Surveys, Special Report 40, 68 p.

  • Deposit

    Harrington, G.L., 1919, The gold and platinum placers of the Tolstoi district: U.S. Geological Survey Bulletin 692-F, p. 339-351.

Comments on the references

  • Primary Reference = Harrington, 1919

General comments

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

Reporter information

Type Date Name Affiliation Comment
Reporter 07-AUG-01 Cameron, C.E. Northern Associates Inc.

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.