Barometer

Site Name

Primary: Barometer

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Commodity

Primary: Mercury
Secondary: Antimony

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Location

State: Alaska
District: Aniak

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Land Status

Not available

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Holdings

Not available

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Workings

Not available

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Ownership

Not available

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Production

Not available

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Deposit

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

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Physiography

Not available

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Mineral Deposit Model

Model Name: Almaden Hg

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Orebody

Not available

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Structure

Not available

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Alterations

Alteration Type: L
Alteration Text: Silica-carbonate altered dikes.

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Rocks

Not available

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Analytical Data

Not available

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Materials

Ore: Stibnite
Ore: Cinnabar
Gangue: Realgar
Gangue: Quartz
Gangue: Orpiment

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Comments

Comment (Geology): Geologic Description = Cinnabar, stibnite, realgar, and possibly orpiment are in quartz gangue deposited irregularly along faulted joints, fractures, and bedding planes in Cretaceous graywacke and shale, near silica-carbonate altered dikes. There are several discrete ore zones.

Comment (Workings): Workings / Exploration = 122 ft adit, 80 ft of crosscuts, pits, and trenches. USBM samples yielded an average grade of .41 lb/ton mercury and maximum 16.5 lb/ton. (Webber and others, 1947)

Comment (Production): Production Notes = Total = 14 or 16 flasks of mercury (Miller and others, 1989)

Comment (Reference): Primary Reference = Cady and others, 1955, p. 110

Comment (Deposit): Model Name = Epithermal vein, mercury-antimony

Comment (Exploration): Status = Inactive

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References

Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Dillingham, Sleetmute, and Taylor Mountains quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-606, 92 p.

Reference (Deposit): Meyer, M.P., 1985, Mineral investigation of the Iditarod-George planning block, central Kuskokwim River area, Alaska: U.S. Bureau of Mines Open-File Report 9-85, 232 p., 4 sheets, scale 1:250,000.

Reference (Deposit): Rytuba, J.J., 1986, Descriptive model of Almaden Hg, in Cox, D.P., and Singer, D.A., eds. Mineral Deposit Models: U.S. Geological Survey Bulletin 1693, p. 180.

Reference (Deposit): Miller, M.L., Belkin, H.E., Blodgett, R.B., Bundtzen, T.K., Cady, J.W., Goldfarb, R.J., Gray, J.E., McGimsey, R.G., and Simpson, S.L., 1989, Pre-field study and mineral resource assessment of the Sleetmute quadrangle, southwestern Alaska: U.S. Geological Survey Open-File Report 89-363, 115 p., 3 plates, scale 1:250,000.

Reference (Deposit): Sainsbury, C.L. and MacKevett, E.M., Jr., 1965, Quicksilver deposits of southwestern Alaska: U.S. Geological Survey Bulletin 1187, 89 p.

Reference (Deposit): Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Dillingham, Sleetmute, and Taylor Mountain quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-606, 92 p.

Reference (Deposit): Malone, Kevin, 1962, Mercury occurrences in Alaska: U.S. Bureau of Mines Circular 8131, 57 p.

Reference (Deposit): Webber, B.S., Bjorklund, S.C., Rutledge, F.A., Thomas, B.I., and Wright, W.S., 1947, Mercury deposits of southwestern Alaska: U.S. Bureau of Mines Report of Investigations 4065, 57 p.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Sleetmute quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-368, scale 1:250,000.

Reference (Deposit): Cady, W.M., Wallace, R.E., Hoare, J.M., and Webber, E.J., 1955, The central Kuskokwim region, Alaska: U.S. Geological Survey Professional Paper 268, 132 p.

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