Rainbow

The Rainbow 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

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Rainbow

Commodity

Primary: Gold
Secondary: Zinc
Secondary: Tungsten
Secondary: Lead

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

Model Name: Polymetallic veins

Orebody

Not available

Structure

Not available

Alterations

Alteration Text: Quartz, iron- and manganese-stained in places.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Arsenopyrite
Ore: Galena
Ore: Gold
Ore: Pyrite
Ore: Scheelite
Ore: Sphalerite

Comments

Comment (Production): Production Notes = By 1914, 480 tons of ore had been shipped (Chapin, 1914).

Comment (Deposit): Model Name = Polymetallic vein (Cox and Singer, 1986; model 22c).

Comment (Reference): Primary Reference = Smith, 1913 (B 525)

Comment (Exploration): Status = Inactive

Comment (Workings): Workings / Exploration = Workings consisted of a vertical shaft 100 feet deep and 270 feet of drifts on the vein (Smith, 1913; B 525). The vein was also marked by surface pits (Chapin, 1914). The old shaft and adit were inaccessible in 1931 (Hill, 1933).

Comment (Geology): Geologic Description = Gold is found in a nearly vertical, east-striking, quartz vein. The vein also contains pyrite, arsenopyrite, galena, sphalerite (Smith, 1913; B 525). The vein has been variously described as from 18 inches wide to 3 feet wide (Brooks, 1912; Chapin, 1914). The vein cuts schist, quartzite, and granite (Chapin, 1914). About 500 feet of underground workings were reported by 1912 (Brooks, 1912). Four hundred and eighty tons of ore was shipped from these workings (Chapin, 1914). The vein contained 1.11 ounces of gold per ton with a narrow 2 inch band containing 10.26 ounces of gold per ton (Hill, 1933).

References

Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Livengood quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-819, 241 p.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Livengood quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-413, 2 sheets, 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.

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): Chapin, Theodore, 1914, Lode mining near Fairbanks, Alaska: U.S. Geological Survey Bulletin 592-J, p. 321-355.

Reference (Deposit): Chapin, Theodore, 1919, Mining in the Fairbanks district: U.S. Geological Survey Bulletin 692-F, p. 321-327.

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): Byers, F.M., Jr., 1957, Tungsten deposits in the Fairbanks district, Alaska: U.S. Geological Survey Bulletin 1024-I, p. 179-216.

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

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., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-633, 72 p.

Reference (Deposit): Eakin, H.M., 1915, Placer mining in Seward Peninsula: U.S. Geological Survey Bulletin 622-I, p. 366-373.

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

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