Unnamed (on Davidof and Lopy Islands)

The Unnamed (on Davidof and Lopy Islands) is a iron 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: Unnamed (on Davidof and Lopy Islands)

Commodity

Primary: Iron
Secondary: Copper
Secondary: Lead
Secondary: Zinc

Location

State: Alaska
District: Aleutian Islands

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
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: The original flow rocks have been intensely altered to iron oxides, chlorite, magnetite, and quartz. The iron oxides may have resulted from the weathering of pyrite.

Rocks

Not available

Analytical Data

Not available

Materials

Not available

Comments

Comment (Geology): Geologic Description = Davidof and Lopy Island consist entirely of Late Tertiary to Quaternary andesitic lava flows and pyroclastic rocks (Nelson, 1959). A large percentage of the rocks on the northern tip of Davidof Island and on the southern 1/2 of Lopy Island have been intensely altered to various shades of yellow, orange, and brown. Some of these altered zones may contain traces of copper, lead, and zinc. The most intensely altered rock consists entirely of iron oxide, chlorite, magnetite, and quartz.

Comment (Deposit): Other Comments = Site is located within the Alaska Maritime Natural Wildlife Refuge.

Comment (Reference): Primary Reference = Nelson, 1959

Comment (Geology): Ore Material = Iron-oxides

Comment (Geology): Age = Late Tertiary or Quaternary.

Comment (Exploration): Status = Inactive

References

Reference (Deposit): Nelson, S.W., Nokleberg, W.J., Miller-Hoare, M., and Mullen M.W., 1979, Siniktanneyak Mountain ophiolite, in Johnson, K.M. and Williams, J.R., The United States Geological Survey in Alaska, Accomplishments during 1978: U.S. Geological Survey Circular 804-B, p. B14-B16

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