Unnamed (west tributary to upper Little Falls Creek)

Prospect in Alaska, United States with commodities Silver, Gold, Copper

Geologic information

Identification information

Deposit ID 10094024
MRDS ID A012165
Record type Site
Current site name Unnamed (west tributary to upper Little Falls Creek)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -148.46967, 62.48265 (WGS84)
Relative position In extreme NW corner of Talkeetna Mountains B-3 quad, NE of Talkeetna River; about 6 1/2 mi (10.4 km) W of head of John Creek; location accurate to within 1/4 mi (400 m) (Csejtey and Miller, 1978, loc. 50).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrite Ore
Pyrrhotite Ore

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Nearby scientific data

(1) -148.46967, 62.48265

Comments on the geologic information

  • Geologic Description = Host rock is gneissic quartz diorite of Jurassic age. Sulfides disseminated in inclusions of biotite schist in Fe-stained gneiss.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Yentna

Comments on the workings information

  • Workings / Exploration = 190 ppm Cu in stream-sediment sample; rock chips have less than 0.06% Cu and a trace of Au and Ag (Rose, 1967).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012165
USGS Alaska Resource Data File ARDF TK093

Bibliographic references

  • Deposit

    Rose, A.W., 1967, Geology of an area on the upper Talkeetna River, Talkeetna Mountains quadrangle, Alaska: Alaska Division of Mines and Minerals Geologic Report 32, 7 p., 1 plate, 1:63,360.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-370, 1 sheet, scale 1:250,000.

  • Deposit

    Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and table describing metalliferous and selected nonmetalliferous mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-B, 20 p., 1 plate, scale 1:250,000.

  • Deposit

    Singer, D.A., Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and discussion of the metalliferous and selected nonmetalliferous mineral resources of the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-588-Q, 33 p., 1 plate, scale 1:250,000.

  • Deposit

    Cobb, E.H., and Csejtey, Bela, Jr., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-716, 63 p.

  • Deposit

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

Comments on the references

  • Primary Reference = Rose, 1967

General comments

Subject category Comment text
Deposit Model Name = Gold-quartz veins? (Cox and Singer, 1986; model 36a?)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1996 Riehle, J. U.S. Geological Survey