Harris and Brown

The Harris and Brown 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: Harris and Brown
Secondary: Sky High
Secondary: Grace E#1

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: Prospect
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

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Arsenopyrite
Ore: Gold
Ore: Jamesonite
Ore: Pyrite
Ore: Stibnite
Ore: Zinkenite

Comments

Comment (Workings): Workings / Exploration = By 1912, a 60-foot-deep shaft had been sunk and 120 feet of drift had been driven at the 60 foot level (Times Publishing Company, 1912, p. 64). Stoping of ore began in December, 1912.

Comment (Exploration): Status = Inactive

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

Comment (Reference): Primary Reference = Tanana Magazine, 1912

Comment (Geology): Geologic Description = Mineralization consists of stibnite filling open fractures and a small proportion of sulfides (Smith, 1913; B 525). Minor amounts of jamesonite, arsenopyrite, pyrite and zinkenite(?) also were identified (Chapman and Foster, 1969). By 1912, a 60-foot-deep shaft had been sunk and 120 feet of drift had been driven at the 60-foot-level. Stoping of ore began in December, 1912. A 6- to 30-inch wide brecciated and quartz-cemented shear zone in the shaft trends N 70 E and dips 45 S (Times Publishing Company, 1912, p. 64). Assays from the development muck ranged from $28 to $130 per ton in gold (1.3 to 6.3 ounces of gold per ton) and average $30 per ton (1.4 ounces of gold per ton).? Cobb (1976, p. 80) noted that Grace E #1 is probably the same ground as Harris and Brown or Sky High. Forbes and others (1968) reported that the Grace E #1 prospect opened two small quartz veins that carry 2%-3% sulfides (including arsenopyrite and minor pyrite) and free-milling gold. An unaltered schist 9 feet into the hanging wall assayed 1.3 ppm gold.

References

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 Livengood quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-413, 2 sheets, scale 1:250,000.

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): Killeen, P.L., and Mertie, J.B., 1951, Antimony ore in the Fairbanks District, Alaska: U.S. Geological Survey Open-File Report 51-46, 43 p.

Reference (Deposit): Forbes, R.B., Pilkington, H.D., and Hawkins, D.B., 1968, Gold gradients and anomalies in the Pedro Dome-Cleary Summit area, Fairbanks District, Alaska: U.S. Geological Survey Open-File Report 324, 43 p.

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): Times Publishing Company, 1912, Tanana Magazine, Quartz Edition: Fairbanks, Alaska 76 p.

Reference (Deposit): Freeman, C.J., 1992, 1991 Golden Summit project final report, volume 2: Historical summary of lode mines and prospects in the Golden Summit project area, Alaska: Avalon Development Corp., 159 p. (Report held by Freegold Recovery Inc. USA, Vancouver, British Columbia.)

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.

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