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Unnamed (near Hayes Glacier)

Prospect in Alaska, United States with commodities Gold, Molybdenum, Lead, Arsenic, Iron
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Geologic information

Identification information

Deposit ID 10093960
MRDS ID A010588
Record type Site
Current site name Unnamed (near Hayes Glacier)

Geographic coordinates

Geographic coordinates: -152.26275, 61.7595 (WGS84)
Relative position Berg and Cobb (1967, locality 2) show this prospect on the south side of the Hayes Glacier approximately 8 miles southwest of the confluence of the Hayes and Trimble Rivers in Section 1, T.19 N. R. 17 W. (U.S. Bureau of Mines, 1998, MAS # 0020840042; MacKevett and Holloway, 1977, locality 23; Cobb, 1972, OFR 80-86, p. 28; Cobb, 1972, MF 385, locality 6; and U.S. Bureau of Mines, 1973, locality 42). Location is approximate within a one mile radius.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Molybdenum Primary
Lead Primary
Arsenic Secondary
Iron Secondary

Materials information

Materials Type of material
Arsenopyrite Ore
Galena Ore
Molybdenite Ore
Pyrite Ore
Quartz Gangue

Alteration

  • (Local) Silicification

Nearby scientific data

(1) -152.26275, 61.7595
ListMap

Comments on the geologic information

  • Geologic Description = A three to four mile long zone of molybdenite-bearing quartz lenses and stringers cutting Tertiary granite (Reed and Lanphere, 1972 and MacKevett and Holloway, 1977, p. 77). Galena, pyrite and arsenopyrite are reported by Berg and Cobb (1967, p. 36-37). Published descriptions of this locality are very similar to the Miss Molly prospect (ARDF TY013). It is possible that the location was inaccurately reported and this is actually the Miss Molly prospect.
  • Age = May be related to Tertiary (56-59 m.y.) intrusions nearby. (Reed and Lanphere, 1972)

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Yentna

Comments on the reserve resource information

  • Reserves = Small tonnage reported by Berg and Cobb (1967).

Comments on the workings information

  • Workings / Exploration = Surface prospecting

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010588
USGS Alaska Resource Data File ARDF TY015

Bibliographic references

  • Deposit

    Berg, H.C., and Cobb, E.H., 1967, Metalliferous Lode Deposits of Alaska. U.S. Geological Survey Bulletin 1246, 254 p.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Tyonek quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-385, 1:250,000 scale.

  • Deposit

    Reed, B.L., and Lanphere, M.A., 1972, Generalized geologic map of the Alaska-Aleutian range batholith showing potassium-argon ages of the plutonic rocks: U.S. Geological Survey Miscellaneous Field Studies Map MF-372, 2 sheets, scale 1:1,000,000.

  • Deposit

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

  • Deposit

    Cobb, E.H., 1979, Summary of references to mineral occurrences (other than minerals fuels and construction materials) in the Kenai and Tyonek Quadrangles, Alaska: U.S. Geological Survey Open-File Report 80-86, 36 p.

  • Deposit

    U.S. Bureau of Mines, 1998, Minerals Availability System/Minerals Industry Location System (MAS/MILS), Talkeetna quadrangle: Worldwide Web URL http://imcg.wr.usgs.gov/data.htm

Comments on the references

  • Primary Reference = Berg and Cobb, 1967

General comments

Subject category Comment text
Deposit Model Name = Dilatant, structurally controlled quartz-molybdenite vein sets
Deposit Other Comments = Published descriptions of this locality are very similar to the Miss Molly prospect (ARDF TY0013). It is possible that the location was inaccurately reported and this is actually the Miss Molly prospect.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1998 Madelyn A. Millholland Millholland & Associates
Reporter 01-JUN-1998 James Riehle U.S. Geological Survey