Ohio

The Ohio 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: Ohio
Secondary: Early Bird
Secondary: Mayflower
Secondary: Connors and Stevens

Commodity

Primary: Gold
Secondary: Antimony
Secondary: Silver
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

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Gold
Ore: Stibnite
Ore: Galena
Ore: Silver

Comments

Comment (Reference): Primary Reference = Mertie, 1918

Comment (Exploration): Status = Inactive

Comment (Workings): Workings / Exploration = In 1912, the Ohio claim had a 50-foot-shaft which exposed a high grade stringer that varied from 6 to 20 inches wide (Times Publishing Company, 1912). The Mayflower claim had an upper shaft 45 feet deep and a lower shaft 60 feet deep. By 1914 the Ohio shaft was 80 feet deep.? A five-stamp mill (see Gilmore prospect) was erected southeast of the Ohio mine in 1915 and operated from September 1 through the end of the year on ore from the Ohio mine and other producers in the area (Brooks, 1915; Smith, 1917; BMB 142). An adit was collared in 1915 which was planned to extend 800 feet at N 30 W to intersect the Ohio shear zone below the surface weathering zone which had hampered mining on the prospect. By August, 1916, this adit was 240 feet long (Mertie, 1918). In 1916, several shafts were accessible on the Ohio prospect and were examined by Mertie (1918). The Ohio prospect was inactive and the workings obstructed with ice when the prospect was examined in 1931 (Hill, 1933).

Comment (Deposit): Model Name = Gold-quartz vein.

Comment (Geology): Geologic Description = Gold is found in quartz-rich shear zones that contain galena, stibnite and pyrite (Smith, 1913; B 525; Killeen and Mertie, 1951). The Ohio claim had a 50-foot shaft which exposed a high-grade stringer varying in width from 6 to 20 inches. The Mayflower claim had an upper shaft 45-feet deep and a lower shaft 60-feet deep. The upper shaft is driven on a northeast striking shear. The lower or southern shaft is driven on two northwest-trending, steeply south-dipping shear zones with vertical slickensides that indicate south-side-down motion (Brooks, 1913, p. 148).? In 1916, several shafts were accessible on the Ohio prospect and were examined by Mertie (1918). A 25-foot-deep shaft on the prospect exposed two coalescing quartz-rich zones that strike N 70 W and dip 45 SW. This ore was considered to be of commercial grade, i.e., approximately 1 ounce of gold per ton. A 57-foot-deep shaft exposed an 8-inch-wide shear zone that assayed $4 to $5 per ton in gold (0.19 to 0.24 ounces of gold per ton). This shear strikes east-west and dips 45 N. A 70-foot-deep shaft had 70 feet of drift at the bottom of the shaft. A gold-bearing, quartz-rich shear zone in this drift averages 4 to 6 inches thick, strikes east-west, and dips 45 SW. This material also was considered to be of commercial grade and carried accessory pyrite and stibnite. Up slope from the 70-foot-deep shaft is a 30-foot-deep shaft driven on a base-metal-rich shear zone containing arsenopyrite, pyrite and quartz. This rock reportedly has high silver values and contained what was thought to be native silver (bismuth?) similar to that identified at the adjacent Mizpah mine (Mertie, 1918). Ore grades in 1912 were estimated at $50 per ton in gold (2.4 ounces of gold per ton) with minor silver (Smith, 1913; B 525).

Comment (Production): Production Notes = The Ohio mine operated in 1914 but production figures are not available (Eakin, 1915). By 1916, the Gilmore mill had treated approximately 350 tons of ore from the Ohio mine (Mertie, 1918).

Comment (Commodity): Ore Material = argentiferous galena

References

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.

Reference (Deposit): Smith, S.S., 1917, The mining industry in the territory of Alaska during the calendar year 1915: U.S. Bureau of Mines Bulletin 142, 66 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): Mertie, J.B., Jr., 1918, Lode mining in the Fairbanks district, Alaska: U.S. Geological Survey Bulletin 662-H, p. 403-424.

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): Smith, P.S., 1917, The mining industry in the territory of Alaska during the calendar year 1915: U.S. Bureau of Mines Bulletin 142, 66 p.

Reference (Deposit): Brooks, A.H., 1915, Mineral resources of Alaska in 1914: U.S. Geological Survey Bulletin 622, 238 p.

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

Reference (Deposit): Brooks, A.H., 1916, Antimony deposits of Alaska: U.S. Geological Survey Bulletin 649, 67 p.

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

Reference (Deposit): Martin, G.C., 1920, The Alaska mining industry in 1918: U.S. Geological Survey Bulletin 712-A, p. 1-52.

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

Reference (Deposit): Brooks, A.H., 1916, Antimony deposits of Alaska: U.S. Geological Survey Bulletin 649, 67 p.

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

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

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