Chickamin

Prospect in Alaska, United States with commodities Copper, Lead, Zinc

Geologic information

Identification information

Deposit ID 10000156
MRDS ID A010192
Record type Site
Current site name Chickamin
Related records 10136760

Geographic coordinates

Geographic coordinates: -130.2737, 56.07088 (WGS84)
Relative position The Chickamin prospect is in Section 9 at an elevation of about 3000 feet on a precipitous west-facing mountainside overlooking Chickamin Glacier. It is about 1.4 mile north-northeast of Disappearing Lake (Berg and others, 1977, p. 84; Elliott and Koch, 1981, p. 11, loc. 27).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Lead Primary
Zinc Primary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Pyrrhotite Ore
Tetrahedrite Ore
Quartz Gangue

Alteration

  • (Local) Local iron staining

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Graywacke

Nearby scientific data

(1) -130.2737, 56.07088

Comments on the geologic information

  • Geologic Description = The country rocks in the area of the Chickamin prospect are metamorphosed pelitic strata of the Jurassic or older Mesozoic Hazelton Group that are underlain and locally intruded by the Triassic Texas Creek Granodiorite. Both the Hazelton and Texas Creek, in turn, are intruded by the Eocene Hyder Quartz Monzonite (Smith, 1977; Berg and others, 1977, p. 15-18, 22-23).? Buddington (1929, p. 100) describes the deposit as a quartz stringer lode and a three-foot-thick quartz fissure vein in graywacke. The stringers and vein contain galena, chalcopyrite, sphalerite, pyrite, and a little pyrrhotite and tetrahedrite. In 1972-73, a U. S. Bureau of Mines field team searched for but could not find the prospect, which probably was covered by snow (Berg and others, 1977, p. 84). A grab sample from a foot-thick granitic dike in the area near the prospect contained traces of pyrrhotite and goethite.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Hyder

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010192
USGS Alaska Resource Data File ARDF BC027

Bibliographic references

  • Deposit

    Buddington, A.F., 1929, Geology of Hyder and vicinity, southeastern Alaska, with a reconnaissance of Chickamin River: U.S. Geological Survey Bulletin 807, 124 p.

  • Deposit

    Smith, J.G., 1977, Geology of the Ketchikan D-1 and Bradfield Canal A-1 quadrangles, Alaska: U.S. Geological Survey Bulletin 1425, 49 p.

  • Deposit

    Berg, H.C., Elliott, R.L., Smith, J.G., Pittman, T.L., and Kimball, A. L., 1977, Mineral resources of the Granite Fiords wilderness study area, Alaska, with a section on aeromagnetic data by Andrew Griscom: U.S. Geological Survey Bulletin 1403, 151 p.

  • Deposit

    Elliott, R.L., and Koch, R.D., 1981, Mines, prospects, and selected metalliferous mineral occurrences in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 81-728-B, 23 p., 1 sheet, scales 1:250,000 and 1:63,360.

Comments on the references

  • Primary Reference = Buddington, 1929

General comments

Subject category Comment text
Deposit Model Name = Polymetallic veins
Deposit Other Comments = Prospect could not be located 1972-73. Site is in Misty Fiords National Monument.

Reporter information

Type Date Name Affiliation Comment
Reporter 17-MAY-1998 H. C. Berg U.S. Geological Survey