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  3. Alaska Resource Data File (ARDF)

Unnamed (near Hayes Glacier)

Prospect, Inactive

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Commodities and mineralogy

Main commodities Au; Mo; Pb
Other commodities As; Fe
Ore minerals arsenopyrite; galena; molybdenite; pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale TY
Quadrangle map, 1:63,360-scale D-7
Latitude 61.76
Longitude -152.26
Nearby scientific data Find additional scientific data near this location
Location and accuracy 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.

Geologic setting

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.
Geologic map unit (-152.262191033747, 61.759421031609)
Mineral deposit model Dilatant, structurally controlled quartz-molybdenite vein sets
Age of mineralization May be related to Tertiary (56-59 m.y.) intrusions nearby. (Reed and Lanphere, 1972)
Alteration of deposit Silicification

Production and reserves

Workings or exploration Surface prospecting
Indication of production None
Reserve estimates Small tonnage reported by Berg and Cobb (1967).

Additional 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.

References

MRDS Number A010588

References

Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p.
Cobb, E.H., 1972, Metallic mineral resources map of the Tyonek quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-385, 1 sheet, scale 1:250,000.
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.
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.
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.
U.S. Bureau of Mines, 1973, Alaska 1:250,000-scale quadrangle map overlays showing mineral deposit locations, principal minerals, and number and type of claims: U.S. Bureau of Mines Open-File Report 20-73, 95 overlays (updated in 1986, 1987).
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
Reporters Madelyn A. Millholland (Anchorage), James Riehle (USGS)
Last report date 6/1/1998