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  3. Mineral Resource Data System (MRDS)

Unnamed (head of Ribdon River)

Occurrence in Alaska, United States with commodity Phosphorus-Phosphates
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Mineral occurrence model information
  7. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10308176
Record type Site
Current site name Unnamed (head of Ribdon River)

Geographic coordinates

Geographic coordinates: -147.35342, 68.63979 (WGS84)
Relative position The occurrence is located near the south fork headwaters of the Ribdon River at an elevation of about 4,600 ft. approximately 5 miles north-northeast of Windy Glacier (SW1/4 sec. 24, T. 9 S., R. 20 E., of the Umiat Meridian). This occurrence is shown as location number 15 in Menzie and others (1985). Location accurate within 1-mile radius.

Site location context

Political divisions (FIPS codes)

North Slope(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Philip Smith Mountains C-1(quadrangle 1:63,360 scale)

Arctic NW(quadrangle 1:100,000 scale)

Philip Smith Mountains(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Sagavanirktok River(hydrologic unit)

Prudhoe Bay(hydrologic accounting unit)

Arctic Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Arctic National Wildlife Refuge(National Wildlife Refuge)

National Wildlife Refuge FWS(Type of land area)

FWS(Federal land areas administered by FWS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Phosphorus-Phosphates Primary

Mineral occurrence model information

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

Nearby scientific data

(1) -147.35342, 68.63979
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Phosphate occurrences in the quadrangle have not been described individually but in general occur most commonly as thin, low-grade concentrations, which are estimated to probably average less than one percent of the host rock matrix (Menzie and others, 1985). The permissive rocks for the phosphate occurrences in the quadrangle are the black, calcareous phosphatic siltstones and shales of the Triassic Shublik Formation. Minor amounts of phosphate rock also occur within the Kongakut and Okpikruak Formations, Kingak Shale, and Sadlerochit Group (Menzie and others, 1985).
  • Ore Material = Phosphate rock
  • Age = Triassic, based on the age of the host Shublik Formation (as mapped by Menzie and others, 1985).

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Canning

Reference information

Bibliographic references

  • Deposit

    Menzie, W.D., Reiser, H.N., Brosgi, W.P., and Detterman, R.L., 1985, Map showing distribution of mineral resources (excepting oil and gas) in the Philip Smith Mountains quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Investigations Map MF-879-C, 2 sheets, scale 1:250,000.

Comments on the references

  • Primary Reference = Menzie and others, 1985

General comments

Subject category Comment text
Deposit Model Name = Upwelling-type phosphate deposits (Cox and Singer, 1986; model 34c).
Deposit Other Comments = the Philip Smith Mountains quadrangle contains rock types permissive for the occurrence of phosphate deposits. Phosphate rock is locally abundant in the Mississippian Lisburne Group to the west of the quadrangle but was not noted in that formation within this quadrangle. Samples of phosphate rock from the quadrangle were not analyzed for uranium; however, there are reports of uranium in samples of phosphate rock in adjacent quadrangles (Menzie and others, 1985).

Reporter information

Type Date Name Affiliation Comment
Reporter 17-NOV-99 J.M. Britton 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.