Ptarmigan

The Ptarmigan 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

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: Ptarmigan

Commodity

Primary: Uranium
Secondary: Semiprecious Gemstone

Location

State: Alaska
District: Aniak

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

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Silicification.

Rocks

Not available

Analytical Data

Not available

Materials

Gangue: Quartz

Comments

Comment (Reference): Primary Reference = Bundtzen and Laird, 1991

Comment (Geology): Geologic Description = Bundtzen and Laird (1991) report that a brecciated and quartz-flooded zone in hornfels contains small vugs lined with euhedral, even doubly terminated, amethyst crystals to 5 centimeters long. A sample of this material contained 38 ppm uranium. The hornfels is developed in Cretaceous clastic sedimentary rocks peripheral to the intrusive complex of the Russian Mountains (Bundtzen and Laird, 1991).

Comment (Geology): Age = Late Cretaceous or Tertiary. Veins post-date hornfels developed around the intrusive complex of the Russian Mountains. Quartz monzonite from this complex has yielded a K/Ar age of 70.3 +/- 2.1 Ma (Bundtzen and Laird, 1991).

Comment (Deposit): Model Name = Silicified zone in hornfels

Comment (Workings): Workings / Exploration = Some small surface pits may be present.

References

Reference (Deposit): Bundzten, T.K., and Laird, G.M., 1991, Geology and mineral resources of the Russian Mission C-1 Quadrangle, southwest Alaska: Alaska Division of Geological and Geophysical Surveys Professional Report 109, 24 p.

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