Pika Canyon

Prospect in Alaska, United States with commodity Copper

Geologic information

Identification information

Deposit ID 10001748
MRDS ID A012532
Record type Site
Current site name Pika Canyon

Geographic coordinates

Geographic coordinates: -141.41264, 63.82976 (WGS84)
Relative position The Pika Canyon prospect is located in sections 29, 30, 31, and 32, T.24 N., R. 21 E., of the Copper River Meridian, it covers about 2 square miles. It is location 7 of Singer and others (1976), and location 12 of Eberlein and others (1977). It lies directly west of the Fishhook prospect (TC009) and 3 miles south of Liberty Creek. The location is accurate to within 1/2 mile.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Malachite Ore
Pyrite Ore
Sphalerite Ore

Alteration

  • (Local) The alteration at Pika Canyon is patchy and somewhat irregular, but generally occurs in somewhat concentric zones of potassic, phyllic, and propylitic alteration (Gill, 1977, p. 86).

Mineral occurrence model information

Model code 79
USGS model code 21a
Deposit model name Porphyry Cu-Mo
Mark3 model number 2

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -141.41264, 63.82976

Comments on the geologic information

  • Geologic Description = The geology at Pika Canyon consists of three main units: Precambrian or early Paleozoic gneiss and schist, Paleozoic phyllite and schist, and Tertiary mafic to felsic volcanic rocks. Many NE-trending faults as well as intense folding dominate the area (Gill, 1977). ? During 1974-1976, soil, rock chip, and stream-sediment sampling were conducted on the prospect by Cities Services Mineral Corp., as well as a ground magnetic survey on a 200- by 500-foot grid (Gill, 1977, p. 2). The soil samples showed anomalous values for copper, zoned in a pattern typical of porphyry-copper deposits in the southwest U.S. (Gill, 1977, p. 87). Pyrite, chalcopyrite, and possibly sphalerite were found in float samples (Gill, 1977). ? the alteration at Pika Canyon is patchy and somewhat irregular, but generally occurs in somewhat concentric zones of potassic, phyllic, and propylitic alteration (Gill, 1977, p. 86).
  • Age = Tertiary

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Active?

Mining district

District name Fortymile

Comments on the workings information

  • Workings / Exploration = During 1974-1976, soil, rock chip, and stream-sediment sampling were conducted on the prospect, as well as a ground magnetic survey on a 200- by 500-foot grid (Gill, 1977, p. 2).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012532
USGS Alaska Resource Data File ARDF TC023

Bibliographic references

  • 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

    Eberlein, G.D., Chapman, R.M., Foster, H.L., and Gassaway, J.S., 1977, Map and table describing known metalliferous and selected nonmetalliferous mineral deposits in central Alaska: U.S. Geological Survey Open-File Report 77-168-D, 132 p., 1 map, scale 1:1,000,000.

  • Deposit

    Gill, R., 1977, Geology and mineral deposits of the southwest quarter of the Tanacross D-1 quadrangle, Alaska: Golden, Colorado School of Mines, M.Sc. thesis, 129 p.

  • Deposit

    Cobb, E.H., and Eberlein, G.D., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the Big Delta and Tanacross quadrangles, Alaska: U.S. Geological Survey Open-File Report 80-1086, 77 p.

Comments on the references

  • Primary Reference = Gill, 1977

General comments

Subject category Comment text
Deposit Model Name = Porphyry Cu deposit (Cox and Singer, 1986; model 21a)
Deposit Other Comments = Pika Canyon prospect is sometimes called Pitka Canyon, but Pitka is a misspelling of the name.

Reporter information

Type Date Name Affiliation Comment
Reporter 13-APR-99 Cameron, C.E. Alaska Division of Geological and Geophysical Surveys