Stay

The Stay is a gold mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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Site Name

Primary: Stay
Secondary: Little Eva
Secondary: Eva No. 2
Secondary: Curlew No. 1
Secondary: Comet No 2
Secondary: Rose
Secondary: Comet

Commodity

Primary: Gold
Secondary: Antimony

Location

State: Alaska
District: Fairbanks

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: The porphyry dikes are altered and iron stained.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Gold
Ore: Stibnite

Comments

Comment (Geology): 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).

Comment (Reference): Primary Reference = Hill, 1933

Comment (Workings): 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.

Comment (Exploration): Status = Inactive

Comment (Deposit): Model Name = Schist-hosted gold-quartz vein

Comment (Production): 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).

References

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

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

Reference (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.

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

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

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

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

Reference (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.

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

Reference (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.

Reference (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.

Reference (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.

Reference (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.

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