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Ivotuk Hills

Occurrence in Alaska, United States with commodities Phosphorus-Phosphates, Uranium, Vanadium
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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 10003378
MRDS ID A106134
Record type Site
Current site name Ivotuk Hills

Geographic coordinates

Geographic coordinates: -155.71364, 68.47961 (WGS84)
Relative position Location is at west end of Ivotuk Hills, 100 m from Otuk Creek. Known to within one mile.

Site location context

Political divisions (FIPS codes)

North Slope(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Killik River B-5(quadrangle 1:63,360 scale)

Killik River S(quadrangle 1:100,000 scale)

Killik River(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Colville River(hydrologic unit)

Colville River(hydrologic accounting unit)

Arctic Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Arctic Slope Regional Corporation(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Phosphorus-Phosphates Primary
Uranium Primary
Vanadium Critical Primary

Materials information

Materials Type of material
Apatite Ore

Mineral occurrence model information

Model code 243
USGS model code 34c
Deposit model name Phosphate, upwelling type

Nearby scientific data

(1) -155.71364, 68.47961
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = A 1.2 m-thick sequence of interbedded phosphatic pelletal limestone and shale of the Otuk Formation is exposed on the north side of the Ivotuk Hills. The limestone beds are lensey, average approximately 78 mm thick, and comprise up to 50% of the 1.2 m-thick section. This occurrence is unique because rocks with such high phosphate content are not common in the Otuk Formation. The Lisburne Ridge phosphate occurrence, 47 km to the northwest may be an extension of the Ivotuk phosphorites.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both

Comments on exploration

  • Status = Inactive

Mining district

District name Colville

Comments on the workings information

  • Workings / Exploration = Geochemical analysis showed the phosphatic limestone contained 30.7% P205, 0.11% V, and 150 ppm U.

Reference information

Bibliographic references

  • Deposit

    Kurtak, J.M., Hicks, R.W., Werdon, M.B., Meyer, M.P., and Mull, C.G., 1995, Mineral investigations in the Colville mining district and southern National Petroleum Reserve in Alaska: U.S. Bureau of Mines Open-File Report 8-95, 217 p.

General comments

Subject category Comment text
Deposit Model Name = Bedded phosphorite

Reporter information

Type Date Name Affiliation Comment
Reporter 07-FEB-1997 K.D. Kelley 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.