Unnamed

Occurrence in Alaska, United States with commodities Gold, Silver

Geologic information

Identification information

Deposit ID 10003356
MRDS ID A106106
Record type Site
Current site name Unnamed

Geographic coordinates

Geographic coordinates: -162.29409, 54.93253 (WGS84)
Relative position Approximate location is near the middle of Deer Island. Anomaly no. 64 of Christie (1974) and no. 10 of MacKevett and Holloway (1977, p. 11).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Alteration

  • (Local) Propylitic based on presence of chlorite.

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4
Model code 105
USGS model code 25a-d
Deposit model name Epithermal vein, generic
Mark3 model number 119

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene

Nearby scientific data

(1) -162.29409, 54.93253

Comments on the geologic information

  • Geologic Description = Color anomaly 1.0 by 0.5 mi (1,600 by 800 m) elongate in northwest direction. Anomaly is in volcanic and epiclastic rocks intruded by granodiorite. Disseminated pyrite is source of color anomaly.
  • Age = Miocene or younger

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Alaska Peninsula

Comments on the workings information

  • Workings / Exploration = Brief reconnaissance geologic mapping and collection of a few silt samples reported by Christie (1974). Samples showed moderate silver (up to 1.5 ppm) and gold to 0.03 ppm. Copper, molybdenum, and zinc were all at low levels.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A106106
USGS Alaska Resource Data File ARDF FP002

Bibliographic references

  • Deposit

    Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)

  • Deposit

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.

Comments on the references

  • Primary Reference = Christie, 1974

General comments

Subject category Comment text
Deposit Model Name = Copper porphyry, epithermal gold vein
Deposit Model Number = 17, 25

Reporter information

Type Date Name Affiliation Comment
Reporter 09-MAY-1994 G.D. DuBois U.S. Geological Survey
Reporter 09-MAY-1994 F.H. Wilson U.S. Geological Survey