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Stay

Past Producer in Alaska, United States with commodities Gold, Antimony
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Geologic information

Identification information

Deposit ID 10002812
MRDS ID A015283
Record type Site
Current site name Stay
Alternate or previous names Little Eva, Eva No. 2, Curlew No. 1, Comet No 2, Rose, Comet

Geographic coordinates

Geographic coordinates: -147.99684, 64.85466 (WGS84)
Relative position The Stay mine is located in the SE1/4 sec. 5, T. 1 S., R. 2 W., Fairbanks Meridian. In 1933, the Stay property consisted of six claims covering 115 acres; these were the Little Eva, Eva No. 2, Curlew No. 1, Curlew No. 2, Rose, and Comet. The property is on the ridge east of Eva Creek, about 0.5 mile above its mouth and about 0.7 mile northeast of the town of Ester. The mine is included in locality 19 of Cobb (1972 [MF 410]).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Antimony Secondary

Materials information

Materials Type of material
Gold Ore
Stibnite Ore

Alteration

  • (Local) The porphyry dikes are altered and iron stained.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -147.99684, 64.85466
ListMap

Comments on the geologic information

  • Geologic Description = The Stay property is in schist, slate, phyllite, tuff, and quartzite that is cut by Cretaceous quartz porphyry dikes that are exposed along the ridge east of Eva Creek(Newberry and others, 1996). Gold-quartz veins are found within the schist. Hill (1933, p. 129-133) visited the Stay property in 1931, and the following is a summary of his observations. During 1930 and 1931, about 700 tons of ore were produced from an adit and the Stay shafts that yielded $16,000 in gold (about 774 ounces). Most of this ore had an average grade of a little more than an ounce of gold per ton. Several shafts on the Little Eva and Eva No. 2 claims carried as much as $60 to $70 per ton in gold (about 2.9 to 3.4 ounces of gold per ton). Most of the development work was in the Little Eva adit near the mouth of Eva Creek. By 1931, this adit was 570 feet long. The adit followed a badly faulted, 6- to 8-inch-wide, vertical vein striking N. 27 W. The vein was continually offset to the west by a series of faults that had a strike of N. 10-51 E. and a 30 to 70 degrees, north to northwest dip. Below the tunnel, the vein was developed by several winzes; the vein exposed in them was 8 to 11inches wide. In some places the schist wall rock east of the main vein was cut by numerous stringers of quartz that followed the nearly horizontal planes of schistosity. The schist contained from 23 cents to as much as $1 in gold per ton (about 0.01 to 0.05 ounce of gold per ton). Considerable work was also done near the northwest corner of the Little Eva claim and the northwestern part of the Eva No. 2 claim. Several shafts from 12 to 60 feet deep were scattered over an area of about 200 square feet. The Eva No. 2 shaft was 60 feet deep and had about 40 feet of drifting at the 40-foot level. The shaft was sunk on a short segment of the vein between two parallel faults. The vein was from 4 to 6 inches wide and trended N. 50 W.; it was high grade, and the schist on both sides was mineralized. Samples of gold are 778, 811, and 831 fine (Glover, 1950).

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Fairbanks

Comments on the production information

  • Production Notes = During 1930 and 1931, about 700 tons of ore were produced from the adit and two shafts; the ore contained about $16,000 in gold (about 774 ounces) (Hill, 1933, p. 129).

Comments on the workings information

  • Workings / Exploration = In 1931, the Stay property consisted of six claims that had been explored by several adits and shallow shafts (Hill, 1933, p. 129-133). Most of the development work was done in the Little Eva adit near the mouth of Eva Creek. By 1931, this adit was 570 feet long. Below the adit, the vein was developed by several winzes. Considerable work had also been done near the northwest corner of the Little Eva claim and the northwestern part of the Eva No. 2 claim; several shafts from 12 to 60 feet deep were scattered over an area of about 200 square feet. The Eva No. 2 shaft was 60 feet deep and had about 40 feet of drift at the 40-foot level.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A015283
USGS Alaska Resource Data File ARDF FB068

Bibliographic references

  • Deposit

    Brooks, A.H., 1912, The Alaska mining industry in 1911, in Brooks, A.H., and others, Mineral resources of Alaska, 1911: U.S. Geological Survey Bulletin 520, p. 17-44.

  • Deposit

    Smith, P.S., 1913, Lode mining near Fairbanks, in Prindle, L.M., A geologic reconnaissance of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Bulletin 525, p. 153-216.

  • Deposit

    Smith, P.S., 1913, Lode mining near Fairbanks: U.S. Geological Survey Bulletin 542-F, p. 137-202.

  • Deposit

    Hill, J.M., 1933, Lode deposits of the Fairbanks District, Alaska: U.S. Geological Survey Bulletin 849-B, p. 29-163.

  • Deposit

    Smith, P.S., 1934, Mineral industry of Alaska in 1933: U.S. Geological Survey Bulletin 864-A, p. 1-94.

  • Deposit

    Smith, P.S., 1938, Mineral industry of Alaska in 1936: U.S. Geological Survey Bulletin 897-A, p. 1-107.

  • Deposit

    Smith, P.S. 1939, Mineral industry in Alaska in 1937: U.S. Geological Survey Bulletin 910-A, p. 1-113.

  • Deposit

    Glover, A.E., 1950, Placer gold fineness: Alaska Territorial Department of Mines Miscellaneous Report 195-1, 38 p.

  • Deposit

    Chapman, R.M., and Foster, R.L., 1969, Lode mines and prospects in the Fairbanks district, Alaska: U.S. Geological Survey Professional Paper 625-D, 25 p., 1 plate.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-410, 1 sheet, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Fairbanks quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-662, 174 p.

  • Deposit

    Smith, P.S., 1939, Mineral industry of Alaska in 1937: U.S. Geological Survey Bulletin 910-A, p. 1-113.

  • Deposit

    Newberry, R.J., Bundtzen, T.K., Clautice, K.C., Combellick, R.A., Douglas, T., Laird, G.M., Liss, S.A., Pinney, D.S., Reifenstuhl, R.R., and Solie, D.N., 1996, Preliminary geologic map of the Fairbanks mining district, Alaska: Alaska Division of Geological and Geophysical Surveys Public Data File 96-16, 17 p., 2 sheets, scale 1:63,360.

Comments on the references

  • Primary Reference = Hill, 1933

General comments

Subject category Comment text
Deposit Model Name = Schist-hosted gold-quartz vein

Reporter information

Type Date Name Affiliation Comment
Reporter 31-JUL-2001 J.R. Guidetti Schaefer Avalon Development Corporation
Reporter 31-JUL-2001 C.J. Freeman Avalon Development Corporation