Cone Mountain

The Cone Mountain is a uranium 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: Cone Mountain

Commodity

Primary: Uranium
Secondary: Zinc
Secondary: Lead

Location

State: Alaska
District: Petersburg

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: Porphyry Cu

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Pliocene

Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Analytical Data

Not available

Materials

Not available

Comments

Comment (Geology): Age = Miocene

Comment (Deposit): Model Name = Felsic plutonic uranium?

Comment (Geology): Geologic Description = The country rocks in the general area of the Cone Mountain prospect are a Miocene(?) alkali feldspar granite stock and associated quartz-porphyritic rhyolite dikes (Koch, 1996, 1997). The prospect is on the western margin of the stock, which intrudes Eocene granodiorite and quartz monzonite plutons and Mesozoic or Paleozoic pelitic schist and paragneiss. A group of 145 claims was staked in 1976, presumably for uranium-bearing and related minerals (Elliott and Koch, 1981, loc. 4; Koch and others, 1981; U. S. Geological Survey, 1979). Geochemical surveys [(Koch and Elliott, 1981 (OFR 81-728C-K)] show high values of Ag, Be, Mo, Nb, Pb, Sn, Y and REE, and Zn in rock, stream-sediment and heavy-mineral concentrate samples from the immediate area of the stock. Differentiation enrichment of these elements in such a highly-evolved silicic magma may account for most of the values reported, but a few Pb and Zn values are sufficiently high to suggest local sulfide deposition.

Comment (Reference): Primary Reference = Elliott and Koch, 1981

Comment (Workings): Workings / Exploration = 145 claims staked in 1976. Claims were active for 2 or 3 years. Exploration by private interests included some diamond drilling. ? Geochemical surveys by the U.S. Geological Survey in the late 1970's [Koch and Elliott, 1981 (OFR 81-728C-K)] show high values of Ag, Be, Mo, Nb, Pb, Sn, Y and REE, and Zn in rock, stream-sediment and heavy-mineral concentrate samples from the immediate area of the stock.

Comment (Commodity): Ore Material = Unspecified radioactive minerals

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Koch, R.D., 1996, Reconnaissance geologic map of the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-A, 35 p., 1 sheet, scale 1:250,000.

Reference (Deposit): Koch, R.D., 1997, Metalliferous mineral resource potential in the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 97-271, 57 p., 1 sheet, scale 1:250,000.

Reference (Deposit): Koch, R.D., Elliott, R.L., and Rossiter, Richard, 1981, Total gamma ray intensities at ground stations in the Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-840, 2 sheets, scale 1:250,000.

Reference (Deposit): U.S. Geological Survey, 1979, Aeroradioactivity map of Cone Mountain, Alaska: U.S. Geological Survey Open-File Report 79-830, 1 sheet, scale 1:63,360.

Reference (Deposit): Elliott, R.L., and Koch, R.D., 1981, Mines, prospects, and selected metalliferous mineral occurrences in the Bradfield Canal quadrangle, Alaska: U.S. Geological Survey Open-File Report 81-728-B, 23 p., 1 sheet, scales 1:250,000 and 1:63,360.

Reference (Deposit): Koch, R.D., and Elliott, R.L., 1981, Maps showing distribution and abundance of yttrium in geochemical samples from Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-K, 2 sheets, scale l:250,000.

Reference (Deposit): Koch, R.D., and Elliott, R.L., 1981, Maps showing distribution and abundance of copper in geochemical samples from Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-D, 4 sheets, scale l:250,000.

Reference (Deposit): Koch, R.D., and Elliott, R.L., 1981, Maps showing distribution and abundance of beryllium in geochemical samples from Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-I, 2 sheets, scale l:250,000.

Reference (Deposit): Koch, R.D., and Elliott, R.L., 1981, Maps showing distribution and abundance of gold and silver in geochemical samples from Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-C, 2 sheets, scale l:250,000.

Reference (Deposit): Koch, R.D., and Elliott, R.L., 1981, Maps showing distribution and abundance of lead in geochemical samples from Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-E, 4 sheets, scale l:250,000.

Reference (Deposit): Koch, R.D., and Elliott, R.L., 1981, Maps showing distribution and abundance of tin in geochemical samples from Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-H, 2 sheets, scale l:250,000.

Reference (Deposit): Koch, R.D., and Elliott, R.L., 1981, Maps showing distribution and abundance of niobium in geochemical samples from Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-J, 2 sheets, scale l:250,000.

Reference (Deposit): Koch, R.D., and Elliott, R.L., 1981, Maps showing distribution and abundance of zinc in geochemical samples from Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-F, 4 sheets, scale l:250,000.

Reference (Deposit): Koch, R.D., and Elliott, R.L., 1981, Maps showing distribution and abundance of molybdenum in geochemical samples from Bradfield Canal quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 81-728-G, 2 sheets, scale l:250,000.

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