Needle Rock

Prospect in Alaska, United States with commodity Gold

Geologic information

Identification information

Deposit ID 10307528
Record type Site
Current site name Needle Rock

Geographic coordinates

Geographic coordinates: -148.45287, 63.97963 (WGS84)
Relative position This gold placer prospect adjoins the upper Totatlanika River near Needle Rock, a prominent landmark. The map site is in the SW1/4 of sec. 1, T. 11 S., R. 5 W., of the Fairbanks Meridian.
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Geographic areas

Country State
United States Alaska


Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

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) -148.45287, 63.97963

Comments on the geologic information

  • Geologic Description = The country rocks in the area of the Needle Rock gold placer prospect include the mid-Paleocene Totatlanika Schist, mid-Tertiary hypabyssal plutons, and younger Tertiary strata that overlie the basement rocks (Wahrhafig, 1970: GQ805). At Needle Rock, Tertiary gravels have been worked for placer gold.
  • Age = Quaternary.

Economic information

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Probably inactive

Mining district

District name Bonnifield

Comments on the workings information

  • Workings / Exploration = Surface only.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF HE084

Bibliographic references

  • Deposit

    Maddren, A.G., 1918, Gold placers near the Nenana coal field: U.S. Geological Survey Bulletin 662, p. 363-402.

  • Deposit

    Wahrhaftig, Clyde, 1970, Geologic map of the Healy D-3 quadrangle: U.S. Geological Survey Geologic Quadrangle Map GQ-805, scale 1:63,360.

  • Deposit

    Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-1062, 113 p.

Comments on the references

  • Primary Reference = Maddren, 1918

General comments

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

Reporter information

Type Date Name Affiliation Comment
Reporter 07-APR-00 N. Van Wyck Stevens Exploration Management Corporation