Unnamed (beach near Yahtse River)

Occurrence in Alaska, United States with commodities Gold, Titanium

Geologic information

Identification information

Deposit ID 10307626
Record type Site
Current site name Unnamed (beach near Yahtse River)

Geographic coordinates

Geographic coordinates: -141.37192, 59.86406 (WGS84)
Relative position This occurrence is on the present Gulf of Alaska shoreline near the mouth of the Yahtse River. It is 2.3 miles northwest of USGS benchmark Jarl. The occurrence, in section 6, T. 24 S., R. 24 E., of the Copper River Meridian, is sample location 155 of Foley and others (1995).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Titanium Primary

Materials information

Materials Type of material
Gold Ore
Ilmenite Ore
Magnetite Ore
Pyrite Ore
Rutile Ore
Garnet Gangue
Sphene 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) -141.37192, 59.86406

Comments on the geologic information

  • Geologic Description = Foley and others (1995) collected one beach sample at this location. Spiral concentrate from this sample contained less than 0.028 gram of gold per ton, 0.53 percent titanium, and 119 ppm zirconium. Thomas and Berryhill (1962) collected reconnaissance beach samples (IB001, IB002, and IB004) from this segment of the Gulf of Alaska shoreline that contained trace to small amounts of pyrite, magnetite, ilmenite, zircon, rutile, garnet, sphene, and gold. Their samples from the Icy Bay area a few miles to the west also contained magnetite, chromite, rutile, xenotime, and zircon. Along this segment of the beach, the magnetic fraction of the Thomas and Berryhill (1962) samples contained 5 pounds or less of iron per cubic yard and 0.7 pound of titanium oxide per cubic yard. The non-magnetic fraction contained as much as 4.7 pounds, but mostly less than 1.3 pounds, of titanium oxide per cubic yard.
  • 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.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF IB003

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

    Foley, J.Y., La Berge, R.D., Grosz, A.E., Oliver, F.S., and Hirt, W.C., 1995, Onshore titanium and related heavy mineral investigations in the eastern Gulf of Alaska region, southern Alaska: U.S. Bureau of Mines Open-File Report 10-95, 125 p.

Comments on the references

  • Primary Reference = Foley and others, 1995

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