Unnamed (near the mouth of Northwestern Lagoon)

The Unnamed (near the mouth of Northwestern Lagoon) 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

Name: Unnamed (near the mouth of Northwestern Lagoon)

State: Alaska

County: na

Elevation:

Commodity: Gold

Lat, Long: 59.74806, -149.89194

Map: View on Google Maps

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.

Satelite image of the Unnamed (near the mouth of Northwestern Lagoon)

Unnamed (near the mouth of Northwestern Lagoon) MRDS details

Site Name

Primary: Unnamed (near the mouth of Northwestern Lagoon)

Commodity

Primary: Gold

Location

State: Alaska
District: Homer

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: None reported.

Rocks

Name: Granite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cretaceous

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

Ore: Pyrite
Gangue: Feldspar
Gangue: Muscovite
Gangue: Quartz

Comments

Comment (Reference): Primary Reference = Cobb and Tysdal, 1980

Comment (Workings): Workings / Exploration = Hand sample assayed 0.15 ppm Au by atomic absorption (MacKevett and Holloway, 1977).

Comment (Geology): Age = Tertiary

Comment (Geology): Geologic Description = The host rock of the occurrence is a Tertiary iron-stained, muscovite granite dike which cuts hornfelsed slate and graywacke of the Cretaceous Valdez Group. The dike contains disseminated pyrite and (by atomic absorption analysis) 0.15 ppm gold (MacKevett and Holloway, 1977).

Comment (Exploration): Status = Inactive

Comment (Deposit): Model Name = Pyrite and gold; Tertiary granite dike.

Comment (Deposit): Other Comments = the occurrence is in Kenai Fjords National Park; the area is now closed to mineral entry.

References

Reference (Deposit): Cobb, E.H. and Tysdal, R.G., 1980, Summaries of data on and list of references to metallic and selected nonmetallic mineral deposits in the Blying Sound and Seward quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-621, 276 p.

Reference (Deposit): Tysdal, R.G., 1978, Mines, prospects, and occurrences map of the Seward and Blying Sound quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-880-A, 2 sheets, scale 1:250,000.

Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.

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