Irish

The Irish 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

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Site Name

Primary: Irish

Commodity

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

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: Prospect
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: The hostrock is propylitically altered.

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Pyrite
Gangue: Quartz

Comments

Comment (Geology): Geologic Description = The hostrock at this prospect is propylitically altered andesite of the Eocene to Oligocene Popof volcanic rocks (Wilson and others, 1995). Mineralization occurs in quartz breccia that forms three small, discontinuous zones exposed in a creek bottom (Peterson and others, 1982). The breccia contains as much as 20 percent disseminated pyrite. The zones are three feet wide and have been traced for only 5 feet along strike. Six rock samples contained as much as 0.33 ppm gold, 21 ppm silver, 81 ppm copper, 535 ppm lead, 1,810 ppm zinc, 1,000 ppm or more arsenic, and 1.25 ppm mercury (Peterson and others, 1982).

Comment (Exploration): Status = Inactive

Comment (Workings): Workings / Exploration = In 1982 UNC Teton Exploration Drilling Company mapped and sampled this prospect (Peterson and others, 1982). Rock samples contained as much as 0.33 ppm gold, 21 ppm silver, 81 ppm copper, 535 ppm lead, 1,810 ppm zinc, 1,000 ppm or more arsenic, and 1.25 ppm mercury.

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

Comment (Geology): Age = Eocene or younger.

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

Comment (Deposit): Model Name = Epithermal gold vein, Polymetallic vein (Cox and Singer, 1986; model 22c)

References

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.

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.)

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