Sweeper Cove

The Sweeper Cove is a gold and silver 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: Sweeper Cove  

State:  Alaska

County:  na

Elevation:

Commodity: Gold, Silver

Lat, Long: 51.84778, -176.64389

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 Sweeper Cove

Sweeper Cove MRDS details

Site Name

Primary: Sweeper Cove


Commodity

Primary: Gold
Primary: Silver
Secondary: Lead
Secondary: Copper
Secondary: Zinc


Location

State: Alaska
District: Aleutians


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

Model Name: Polymetallic veins


Orebody

Not available


Structure

Not available


Alterations

Alteration Type: L
Alteration Text: Strong pyritization obscures contact according to Coats (1956), however examination in 1993 did not confirm this.


Rocks

Not available


Analytical Data

Not available


Materials

Ore: Galena
Ore: Sphalerite
Gangue: Pyrite
Gangue: Quartz


Comments

Comment (Workings): Workings / Exploration = Assay of pyritic rocks showed negligible gold and silver (Coats, 1956). Sampling of vein in 1993 yielded 300 ppb Au, 15 ppm Ag, 100 ppm Cu, 300 ppm Pb, and 700 ppm Zn (sample 93 TL 106).

Comment (Exploration): Status = Inactive

Comment (Reference): Primary Reference = Coats, 1956

Comment (Deposit): Model Name = Polymetallic vein

Comment (Geology): Geologic Description = Highly pyritized contact between a dioritic intrusion and country rock (Coats,1956). Country rock is mildly altered and metamorphosed volcanic rocks of the Finger Bay Volcanics. Near the contact between the Finger Bay Volcanics and the dioritic intrusion is a quartz vein containing galena and sphalerite(?).

Comment (Geology): Age = Tertiary


References

Reference (Deposit): Coats, R.R., 1956, Geology of northern Adak Island, Alaska: U.S. Geological Survey Bulletin 1028-C, p. 45-67, 1 plate, scale 1:50,000.

Reference (Deposit): unpublished data, U.S. Geological Survey, 1994


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