Unnamed (on Granite Island)

The Unnamed (on Granite Island) 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

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 Granite Island)

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
Age Young: Eocene

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

Analytical Data

Not available

Materials

Gangue: Quartz

Comments

Comment (Geology): Geologic Description = The occurrence is described as a 10-centimeter-wide quartz vein which crosscuts coarse-grained, foliated biotite granite. Tysdal and Case (1979) have dated the granite as Eocene.

Comment (Deposit): Model Name = Insufficient information to classify.

Comment (Workings): Workings / Exploration = A surface sample contained, 0.2 PPM Au by A.A. and 150 PPM Cu by semi-quantitative analysis (Tysdal, 1978).

Comment (Exploration): Status = Inactive

Comment (Reference): Primary Reference = Tysdal, 1978

Comment (Reserve-Resource): Reserves = None reported.

Comment (Geology): Age = Eocene or younger; vein cuts Eocene granite.

References

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.

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., and Case, J.E., 1979, Geologic map of the Seward and Blying Sound quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-1150, scale 1:250,000.

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