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Ruby Creek

Past Producer in Alaska, United States with commodity Gold
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Geologic information

Identification information

Deposit ID 10038122
MRDS ID M045406
Record type Site
Current site name Ruby Creek
Alternate or previous names Ruby Gulch

Geographic coordinates

Geographic coordinates: -150.84279, 62.57954 (WGS84)
Relative position Clark and Cobb (1972, locality 28) and MacKevett and Holloway (1977, locality 27) show the Ruby Gulch mine in a small tributary near the head of Willow Creek, and about 0.6 miles north-northwest of the Willow Creek occurrence (TL042) in the south half of Section 19, T. 29 N., R. 8 W., of the Seward Meridian.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Platinum Ore

Mineral occurrence model information

Model code 119
USGS model code 39a
BC deposit profile C01. C02
Deposit model name Placer Au-PGE
Mark3 model number 54

Nearby scientific data

(1) -150.84279, 62.57954
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Comments on the geologic information

  • Geologic Description = Ruby Gulch, a small tributary near the head of Willow Creek, cuts the contact between Mesozoic marine sedimentary rocks (KJs) and continentally derived Pliocene conglomerate of the Sterling (?) Formation (Tps) mapped by Reed and Nelson (1980). Mertie (1919) describes the placer deposit as 4 feet of gravel on bedrock of Tertiary continental deposits. He reports that mining at the site in 1917 recovered a little fine, flaky platinum with the gold.
  • Age = Pleistocene.

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Mining district

District name Yentna

Comments on the production information

  • Production Notes = Mertie (1919) describes the placer deposit as 4 feet of gravel on bedrock of Tertiary continental deposits. He reports that mining at the site in 1917 recovered a little fine, flaky platinum with the gold.

Comments on the workings information

  • Workings / Exploration = The drainage has been prospected and mined by various small scale surface methods. No other data is available.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M045406
USGS Alaska Resource Data File ARDF TL041

Bibliographic references

  • Deposit

    Clark, A.L., and Hawley, C.C., 1968, Reconnaissance geology, mineral occurrences, and geochemical anomalies of the Yentna district, Alaska: U.S. Geological Survey Open-File Report 68-35, 64 p.

  • Deposit

    Reed, B.L., Nelson, S.W., Curtin, G.C., and Singer, D.A., 1978, Mineral resources map of the Talkeetna Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-870-D, 1 sheet, scale 1:250,000.

  • Deposit

    Cobb, E.H., and Reed, B.L., 1980, Summaries of data and lists of reference to metallic and selected nonmetallic mineral deposits in the Talkeetna quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-884, 106 p.

  • Deposit

    Reed, B.L., and Nelson, S.W., 1980, Geologic map of the Talkeetna quadrangle: U.S. Geological Survey Miscellaneous Investigations Map I-1174, scale 1:250,000.

  • Deposit

    Clark, A.L., and Cobb, E.H., 1972, Metallic mineral resources map of the Talkeetna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-369, 1 sheet, scale 1:250,000.

  • 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

    Mertie, J.B., Jr., 1919, Platinum-bearing gold placers of the Kahiltna Valley: U.S. Geological Survey Bulletin 692-D, p. 233-264.

Comments on the references

  • Primary Reference = Mertie, 1919

General comments

Subject category Comment text
Deposit Model Name = Placer Au-PGE (Cox and Singer, 1986; model 39a).
Deposit Other Comments = Also see Willow Creek (TL042).

Reporter information

Type Date Name Affiliation Comment
Reporter 10-AUG-1998 Madelyn A. Millholland Millholland & Associates