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Hidden Creek

Prospect in Alaska, United States with commodity Gold
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Geologic information

Identification information

Deposit ID 10308583
Record type Site
Current site name Hidden Creek

Geographic coordinates

Geographic coordinates: -144.16263, 62.75968 (WGS84)
Relative position Hidden Creek (Cobb, 1979 [OF 79-1247, p. 13]), is a south-flowing tributary to Flat Creek. It has been actively prospected about one-quarter mile north of the lake in the Flat Creek valley (Richter, 1966, fig. 5). Hidden Creek is locality 20 of Richter and Matson (1972) and locality 19 of MacKevett and Holloway (1977). It lies along the section line at the bottom center of the SW1/4, section 6, T. 11 N., R. 7 E., Copper River Meridian.
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Geographic areas

Country State
United States Alaska

Commodities

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) -144.16263, 62.75968
ListMap

Comments on the geologic information

  • Geologic Description = The rocks in the area consist of Pennsylvanian to Permian volcanics of the Tetelna Formation that are intruded by monzonitic rocks of the Pennsylvanian to Permian, Ahtell pluton. The contact is broad and low angle; the Teteltna rocks form a roof cap over the pluton along Hidden Creek (Richter, 1966). Little is known about this placer deposit. The area was prospected in the early 1900's; it was restaked and prospected again after the discovery of the placer in Grubstake Gulch in 1934 (Moffit, 1938, p. 51). The placer prospect is about 3 miles below the Elizabeth, molybdenum-porphyry deposit (GU025). This porphyry was apparently not sampled systematically for gold, but Richter and Matson (1968) reported one highly anomalous stream-sediment sample with 300 ppb Au in the valley of Hidden Creek below the Elizabeth deposit and about 2.5 miles above the placer workings in Hidden Creek.
  • Age = Holocene placer.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chistochina

Comments on the production information

  • Production Notes = Probably minor .

Comments on the workings information

  • Workings / Exploration = Small placer operation (Moffit, 1938; Richter, 1966).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF GU023

Bibliographic references

  • Deposit

    Richter, D.H., 1966, Geology of the Slana district on south-central Alaska: Alaska Division of Geological and Geophysical Surveys Geological Report 2l, 36b p., 3 sheets, scale 1:63,360.

  • Deposit

    Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Gulkana quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1247, 36 p.

  • Deposit

    WGM Inc., 1980, 1979 Summary report of gold potential, Slana District, Ahtna project: WGM Inc., 10 p., 1:63,360-scale map. (Report held by Ahtna Mineral Co., Anchorage, Alaska).

  • 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.

  • Deposit

    Moffit, F.H., 1938, Geology of the Slana-Tok district, Alaska: U.S. Geological Survey Bulletin 904, 54 p.

  • Deposit

    Richter, D.H., and Matson, N.A., Jr., 1972, Metallic mineral resources map of the Gulkana quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-419, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Moffit, 1938; Richter, 1966

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 04-DEC-00 W.T. Ellis Alaska Earth Sciences
Reporter 04-DEC-00 Hawley, C.C. Hawley Resource Group
Reporter 04-DEC-00 W.J. Nokleberg U.S. Geological Survey