Thormac

The Thormac is a silver and 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: Thormac

State:  Alaska

County:  na

Elevation:

Commodity: Silver, Gold

Lat, Long: 55.28, -160.59900

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 Thormac

Thormac MRDS details

Site Name

Primary: Thormac


Commodity

Primary: Silver
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

Not available


Rocks

Not available


Analytical Data

Not available


Materials

Ore: Pyrite
Gangue: Quartz


Comments

Comment (Workings): Workings / Exploration = In 1982 UNC Teton Exploration Drilling Company explored the occurrence and collected several samples.

Comment (Reference): Primary Reference = Peterson and others, 1982

Comment (Geology): Age = Eocene or younger.

Comment (Deposit): Model Name = Epithermal gold vein

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

Comment (Geology): Geologic Description = This occurrence is a quartz vein system with a strike length of 1,100 feet. Individual veins within the system exceed 3 feet in width. The host rock is andesite of the late Eocene to early Oligocene Popof volcanic rocks (Wilson and others, 1995). The system contains abundant gossanous vugs. There is no indication of base metal sulfides, and the gossans probably reflect oxidation of pyrite. Grab samples contained 0.005 to 0.135 ppm gold, 0.2 to 19.0 ppm silver, as much as 800 ppm arsenic, and 5.0 ppm or more mercury (Peterson and others, 1982).

Comment (Exploration): Status = Inactive


References

Reference (Deposit): Wilson, F.H., White, W.H., and DuBois, G.D., 1988, Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula: U.S. Geological Survey Open-File Report 88-666, 128 p., scale 1:250,000.

Reference (Deposit): Peterson, R.J., Lemmers, J., Handverger, P., Gallagher, J., Pilcher, R., East, J., Macleod, T., Bartels. E., 1982, Geology and precious metals potential Unga, Popof, and Korovin Islands, Shumagin Group, Aleutian Chain, Alaska: UNC Teton Exploration Drilling Company report, 127 p., 5 map sheets, various scales. (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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