Bechevin Bay

Occurrence in Alaska, United States with commodities Gold, Silver

Geologic information

Identification information

Deposit ID 10090197
MRDS ID A106107
Record type Site
Current site name Bechevin Bay

Geographic coordinates

Geographic coordinates: -163.1341, 54.93585 (WGS84)
Relative position Approximate location is on Bechevin Bay between mouth of Morzhovoi Bay and Traders Mountain. Anomaly no. 45 of Christie (1974) and no. 6 of MacKevett and Holloway (1977, p. 11).
(click for info)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Materials information

Materials Type of material
Pyrite Ore

Alteration

  • (Local) Propylitic alteration is common, as evidenced by chlorite and epidote. Rare sericitic alteration is locally present. Leaching is moderate and fracturing ranges from slight to intense.

Mineral occurrence model information

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 Volcanic Rock (Aphanitic)
    Stratigraphic age (youngest) Holocene
    Stratigraphic age (youngest) Holocene

Nearby scientific data

(1) -163.1341, 54.93585

Comments on the geologic information

  • Geologic Description = Christie (1974) reported brief reconnaissance mapping of a color anomaly 2,000 by 3,000 ft, (600 by 900 m) covering a variety of volcanic rocks. The color anomaly is apparently due entirely to pervasive pyrite disseminated in all rock types. 99 percent of the pyrite is disseminated at concentrations up to 15 percent of the rock, and only rarely is it seen in fractures.
  • 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 geochemical sampling reported by Christie (1974). Geochemical results showed copper typically less than 30 ppm and molybdenum less than 5 ppm; silver ranged from 0.9 to 1.6 ppm and gold was generally less than 0.01 ppm one sample yielded 0.02 ppm.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A106107
USGS Alaska Resource Data File ARDF FP005

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 = Epithermal gold vein
Deposit Other Comments = Chrisite (1974) typically does not mention quartz veins in his descriptions. If they are not present at this occurrence, their absence probably is significant with respect to potential for epithermal gold vein mineralization.

Reporter information

Type Date Name Affiliation Comment
Reporter 06-MAY-1994 G.D. DuBois U.S. Geological Survey
Reporter 06-MAY-1994 F.H. Wilson U.S. Geological Survey