Cahill Creek

Prospect in Alaska, United States with commodity Gold

Geologic information

Identification information

Deposit ID 10001847
MRDS ID A012663
Record type Site
Current site name Cahill Creek

Geographic coordinates

Geographic coordinates: -164.45523, 64.8182 (WGS84)
Relative position Cahill Creek is a north tributary to Lower Willow Creek. Its mouth is at an elevation of about 500 feet, 3.3 miles upstream of the confluence of Lower Willow Creek and the Casadepaga River. This is locality 75 of Cobb (1972, MF 445; 1978, OF 78-181).
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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

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel

Nearby scientific data

(1) -164.45523, 64.8182

Comments on the geologic information

  • Geologic Description = Cahill Creek has been prospected and gold was found along the lower 0.5 mile where the creek crosses benches of Lower Willow Creek (Smith, 1910).
  • Age = Quaternary; the numerous incised terraces along the Casadepaga River and its major tributaries (including Lower Willow Creek) indicate that more than one cycle of erosion and deposition has developed placer deposits in the area. The low elevations between 170 and 270 feet along the first 11 miles of the river, suggest that Quaternary sea level fluctuations could have influenced placer development.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Council

Comments on the workings information

  • Workings / Exploration = Surface prospecting took place on this creek prior to 1910.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012663
USGS Alaska Resource Data File ARDF SO090

Bibliographic references

  • Deposit

    Smith, P.S., 1910, Geology and mineral resources of the Solomon and Casadepaga quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Bulletin 433, 234 p.

  • Deposit

    Cobb, E.H., 1972, Metallic resources map of the Solomon quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-445, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Solomon quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-181, 185 p.

Comments on the references

  • Primary Reference = Smith, 1910

General comments

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

Reporter information

Type Date Name Affiliation Comment
Reporter 19-AUG-1999 Travis L. Hudson Applied Geology