1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Irish

Prospect in Alaska, United States with commodities Silver, Gold, Arsenic, Copper, Mercury, Lead, Zinc
Map
XML
JSON
KML
C
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10308126
Record type Site
Current site name Irish

Geographic coordinates

Geographic coordinates: -160.62242, 55.28923 (WGS84)
Relative position The Irish prospect is at an elevation of about 1,000 feet, and 0.4 mile northwest of the top of hill 2015, in the NE1/4 of sec. 33, T. 56 S., R. 75 W., Seward Meridian. The location is accurate to within 2,500 feet.

Site location context

Political divisions (FIPS codes)

Aleutians East(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Port Moller B-2(quadrangle 1:63,360 scale)

Unga Island(quadrangle 1:100,000 scale)

Port Moller(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Cold Bay(hydrologic unit)

Aleutian Islands(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Aleut Corporation(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Arsenic Critical Secondary
Copper Secondary
Mercury Secondary
Lead Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Pyrite Ore
Quartz Gangue

Alteration

  • (Local) The hostrock is propylitically altered.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Nearby scientific data

(1) -160.62242, 55.28923
ListMap

Economic information

Comments on the geologic information

  • 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).
  • Age = Eocene or younger.

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Inactive

Mining district

District name Alaska Peninsula

Comments on the workings information

  • 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.

Reference information

Bibliographic references

  • 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.)

  • 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.

Comments on the references

  • Primary Reference = Peterson and others, 1982

General comments

Subject category Comment text
Deposit Model Name = Epithermal gold vein, Polymetallic vein (Cox and Singer, 1986; model 22c)
Deposit Other Comments = This prospect is located on land patented by, or interim-conveyed to, the Aleut Corporation.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-01 S.H. Pilcher U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.