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Otter Creek

Producer in Alaska, United States with commodities Gold, Silver, Mercury, Antimony, Chromium, Tungsten, Tin, Lead
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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. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10308871
MRDS ID A015073
Record type Site
Current site name Otter Creek
Related records 10002635

Geographic coordinates

Geographic coordinates: -157.93593, 62.4504 (WGS84)
Relative position USGS MF-363, Loc. 31. Flat east to Slate Creek.; Discovery claim 3 miles east of Flat.; Accurate.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Iditarod B-4(quadrangle 1:63,360 scale)

Iditarod SW(quadrangle 1:100,000 scale)

Iditarod C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Primary
Mercury Secondary
Antimony Critical Secondary
Chromium Critical Secondary
Tungsten Critical Secondary
Tin Critical Secondary
Lead Secondary

Materials information

Materials Type of material
Cassiterite Ore
Chromite Ore
Cinnabar Ore
Galena Ore
Gold Ore
Scheelite Ore
Stibnite Ore

Mineral occurrence model information

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

Nearby scientific data

(1) -157.93593, 62.4504
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Gold is deposited in both terrace and modern stream channels from Granite Creek about 5 miles to Flat. Most coarse gold is deposited on and in cracks in monzonite bedrock near discovery. Gold lowers in grade progressively downstream. Overburden is 10-18 ft. thick; 2-6 ft. of gravel overlain by 4-12 ft. of frozen muck. Top 2-6 ft of bedrock was taken up to recover gold in crevices.
  • Age = Tertiary/Quaternary

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic

Comments on exploration

  • Status = Active

Mining district

District name Iditarod

Comments on the production information

  • Production Notes = Production 1915-86 estimated at 235,721 oz. Au and 31,408 oz. Ag. Dredge operated 1915-56.

Comments on the workings information

  • Workings / Exploration = Surface: dredging

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Bundtzen and others, 1992

General comments

Subject category Comment text
Deposit Model Name = Placer: stream, bench
Deposit Other Comments = Stream gradient under 100 ft. per mile. Glen Gulch placers included with Otter Creek.

Reporter information

Type Date Name Affiliation Comment
Reporter 25-MAY-1994 Powers, M.T.; Huber, D.F.; Miller, M.L. U.S. Geological Survey

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.