Icy Bay

Occurrence in Alaska, United States with commodities Gold, Titanium, Chromium

Geologic information

Identification information

Deposit ID 10307629
Record type Site
Current site name Icy Bay

Geographic coordinates

Geographic coordinates: -141.45763, 59.99916 (WGS84)
Relative position This occurrence is on the north shoreline of Icy Bay, 1.8 miles northeast of the mouth of Carson Creek. It is in section 22, T. 22 S., R. 23 E., of the Copper River Meridian. It is locality 5 of Cobb (1972 [MF 411]; 1979 [OF 79-1246]).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Titanium Primary
Chromium Secondary

Materials information

Materials Type of material
Chromite Ore
Gold Ore
Ilmenite Ore
Magnetite Ore
Rutile Ore
Garnet Gangue
Sphene Gangue
Xenotime Gangue
Zircon 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

Nearby scientific data

(1) -141.45763, 59.99916

Comments on the geologic information

  • Geologic Description = Thomas and Berryhill (1962) collected reconnaissance beach samples (IB004, IB006-010) from the Icy Bay area that contained trace to small amounts of magnetite, ilmenite, chromite, zircon, rutile, garnet, sphene, xenotime, and gold. The magnetic fraction of their samples contained as much as 6.2 pounds of iron and 1 pound of titanium oxide per cubic yard. The non-magnetic fraction contained as much as 6.4 pounds, but mostly less than 2 pounds, of titanium oxide per cubic yard. An auger sample of beach material collected by Thomas and Berryhill (1962) at this location contained 0.4 pound of titanium oxide per cubic yard in the magnetic fraction (which also contained 1.8 pounds of iron per cubic yard) and 1.8 pounds of titanium oxide per cubic yard in the non-magnetic fraction. It also contained a trace of gold.
  • Age = Holocene.

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Yakataga

Comments on the workings information

  • Workings / Exploration = Reconnaissance characterization of beach samples has been completed in this area (Thomas and Berryhill, 1962).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF IB006

Bibliographic references

  • Deposit

    Thomas, B.I., and Berryhill, R. V., 1962, Reconnaissance studies of Alaskan beach sands, eastern Gulf of Alaska: U.S. Bureau of Mines Report of Investigations 5986, 40 p.

  • Deposit

    Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Bering Glacier, Icy Bay, Middleton Island, and Yakutat quadrangles, Alaska: U.S. Geological Survey Open-File Report 79-1246, 41 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Icy Bay quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-411, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Thomas and Berryhill, 1962

General comments

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

Reporter information

Type Date Name Affiliation Comment
Reporter 12-DEC-01 Travis L. Hudson Applied Geology