Stemwinder

The Stemwinder 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: Stemwinder  

State:  Alaska

County:  na

Elevation:

Commodity: Gold

Lat, Long: 55.328, -160.57500

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 Stemwinder

Stemwinder MRDS details

Site Name

Primary: Stemwinder


Commodity

Primary: Gold
Secondary: Arsenic
Secondary: Mercury


Location

State: Alaska
District: Alaska Peninsula


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 Text: The host rock exhibits argillic alteration.


Rocks

Not available


Analytical Data

Not available


Materials

Ore: Gold
Ore: Pyrite
Gangue: Quartz


Comments

Comment (Reference): Primary Reference = Ellis, 1988

Comment (Geology): Age = Eocene or younger.

Comment (Workings): Workings / Exploration = In 1988 Battle Mountain Exploration Company examined this site and collected 19 rock, 32 soil, and 12 pan samples. Only two rock samples contained anomalous gold values (0.04 and 0.22 ppm).

Comment (Geology): Geologic Description = This site consists of a 200-foot long, northwest-trending quartz-pyrite stockwork. The stockwork comprises quartz veins 0.5 to 6 inches thick that contain pyrite laminations and clots. The host rock is argillically altered andesite mapped as Eocene to Oligocene Popof volcanic rocks (Wilson and others, 1995). Of 19 rock samples, two contained gold (0.04 and 0.22 ppm) and three contained mercury (0.15 to 1.55 ppm). Pan samples contained as much as 1.2 ppm gold (Ellis, 1988).

Comment (Deposit): Other Comments = This occurrence is located on land patented by, or interim-conveyed to, the Aleut Corporation.

Comment (Deposit): Model Name = Epithermal gold veins

Comment (Exploration): Status = Inactive


References

Reference (Deposit): Ellis, W.T., 1988, Unga/Alaska Peninsula project, 1988 report: Battle Mountain Exploration Company report, 64 p. (Report held by the Aleut Corporation, Anchorage, Alaska.)

Reference (Deposit): Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 map sheet, scale 1:250,000.


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