Twentieth Century Knight Island

The Twentieth Century Knight Island is a copper 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: Twentieth Century Knight Island

Commodity

Primary: Copper

Location

State: Alaska
District: Prince William Sound District

Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

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: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Basalt Is Altered To Greenstone

Rocks

Name: Basalt
Role: Associated
Age Type: Associated Rock
Age Young: Paleocene

Name: Basalt
Role: Associated
Age Type: Host Rock Unit
Age Young: Paleocene

Name: Basalt
Role: Associated
Age Type: Host Rock
Age Young: Paleocene

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Gangue: Pyrrhotite

Comments

Comment (Location): DEPOSIT NUMBER IS THE MAP LOCATION NUMBER FROM MF-880A. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Deposit): SHEAR ZONE CONTAINS LENSES AND STRINGERS OF CHALCOPYRITE

Comment (Workings): SEVERAL HUNDRED FEET OF WORKINGS

References

Reference (Deposit): USGS OPEN FILE 80-621, P. 240

Reference (Deposit): USGS BULLETIN 379, P. 90

Reference (Deposit): USGS MISCELLANEOUS FIELD STUDIES 880-A, LOCATION 226

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