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A.F. Parker

Past Producer in Alaska, United States with commodities Gold, Silver, Lead
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Geologic information

Identification information

Deposit ID 10002247
MRDS ID A013149
Record type Site
Current site name A.F. Parker
Related records 10185553

Geographic coordinates

Geographic coordinates: -136.89518, 58.88083 (WGS84)
Relative position The mine is at an elevation of about 1000 feet 1.5 miles southwest of Lamplugh Glacier. It is about 0.6 mile west-northwest of the LeRoy Mine (MF023) near the center of the NW 1/4, section 34, T. 34 S., R. 51 E., of the Copper River Meridian. Twenhofel and others (1949, p. 33) give the elevation of the same prospect as 850 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary

Comments on the commodity information

  • Gangue = altered rock material
  • Ore Material = Gold (native)

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Gold Ore
Quartz Gangue

Alteration

  • (Local) Gougy (clay-rich?) material reported along vein-fissures.

Mineral occurrence model information

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

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite

Nearby scientific data

(1) -136.89518, 58.88083
ListMap

Comments on the geologic information

  • Geologic Description = Golf-bearing veins at the A. F. Parker prospect cut granitic host rocks. The veins are discontinuous gold-rich structures which occur in gougy vein-faults of diverse strikes. Locally, the gold-bearing veins are cut off by low-angle post-mineral faults. Short vein segments also occur near a 16-foot adit driven along a gougy vein that strikes east-northeast. Samples of gougy vein material contained only a trace of gold, but quartz vein material containing more than 2 ounces per ton gold was found on the dump, and a thin quartz vein in the face of the adit contained 5.13 ounce per ton gold (grab sample). A thin vein in an outcrop about 35 feet above the short adit contained 2.46 ounces per ton gold over 0.1 foot (Kimball and others, 1978, p. C234-236). Galena, pyrite, and free gold were reported by MacKevett and others (1971, p. 64).
  • Age = Late Cretaceous or younger.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Juneau

Comments on the production information

  • Production Notes = Seven or eight tons of ore was shipped before July 1940, and additional sacked ore was seen by Twenhofel and others (1949, p. 33) when they visited the property in 1940.

Comments on the reserve resource information

  • Reserves = No reserves.

Comments on the workings information

  • Workings / Exploration = Veins were discovered and claims located in 1938. Some ore was produced from surface cuts or in a 16-foot drift-adit before July 1940. The ore was transported to the beach by an aerial tram.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A013149
USGS Alaska Resource Data File ARDF MF024

Bibliographic references

  • Deposit

    Twenhofel, W.S., Reed, J. C., and Gates, G.O., 1949, Some mineral investigations in southeastern Alaska: U.S. Geological Survey Bulletin 963-A, p. 1-45.

  • Deposit

    MacKevett, E.M., Jr., Brew, D.A., Hawley, C.C., Huff, L.C., and Smith, J.G., 1971, Mineral resources of Glacier Bay National Monument, Alaska: U.S. Geological Survey Professional Paper 632, 90 p., 12 plates, scale 1:250,000.

  • Deposit

    Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources, in Brew, D. A., and others, Mineral resources of the Glacier Bay National Monument wilderness study area, Alaska: U.S. Geological Survey Open-File Report 78-494, p. C1-C375.

Comments on the references

  • Primary Reference = Kimball and others, 1978; Twenhofel and others, 1949

General comments

Subject category Comment text
Deposit Model Name = Low-sulfide gold-quartz vein (Cox and Singer, 1986; model 36a).
Deposit Other Comments = Apparently there was no production after about 1940. Mine is in Glacier Bay National Park and Preserve in the Reid Inlet gold area defined by Kimball and others (1978).

Reporter information

Type Date Name Affiliation Comment
Reporter 08-APR-99 Hawley, C.C. Hawley Resource Group