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Pmrgx-10

Occurrence in Alaska, United States with commodities Silver, Lead, Zinc, Arsenic, Antimony
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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. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10308125
Record type Site
Current site name Pmrgx-10

Geographic coordinates

Geographic coordinates: -160.67542, 55.28623 (WGS84)
Relative position This occurrence is located on western Unga Island approximately 1 mile due south of the head of Zachary Bay. The map site is at an elevation of about 1,100 feet, near the center of sec. 31, T. 56 S., R. 74 W., of the Seward Meridian. It is referred to as PMRGX-10 in Wilson and others (1988, locality 59). The location is accurate to within 1,200 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-3(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

Shumagin Corporation(ANCSA Village)

ANCSA Village NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Lead Primary
Zinc Critical Primary
Arsenic Critical Secondary
Antimony Critical Secondary

Materials information

Materials Type of material
Pyrite Ore

Alteration

  • (Local) Dacite(?) at this site exhibits propylitic alteration.

Nearby scientific data

(1) Qs
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = At this site propylitically altered dacite(?) in the Oligocene to Miocene Unga Formation (Wilson and others, 1995) locally contains disseminated pyrite and posiibly other, undetermined, sulfides. Three rock samples collected here by the U.S. Geological Survey in the 1980s were reported to be anomalous in antimony, arsenic, lead, silver, and zinc (Wilson and others, 1988).

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Alaska Peninsula

Comments on the workings information

  • Workings / Exploration = Rock samples 85AAi107, and 109-11 collected by the U.S. Geological Survey in the mid-1980s were reported to be anomalous in antimony, arsenic, lead, silver, and zinc (Wilson and others, 1988).

Reference information

Bibliographic references

  • Deposit

    Wilson, F.H., Harris, E.E., and Bailey, E.A., 1987, Preliminary analytical results and sample locality map for rock samples collected in 1985 and 1986, Port Moller and Stepovak Bay quadrangles, Alaska: U.S. Geological Survey Open-File Report 87-497, 44 p., 1 plate, scale 1:250,000.

  • 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.

  • 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 = Wilson and others, 1988

General comments

Subject category Comment text
Deposit Other Comments = the site is located on land selected or patented by, or interim-conveyed to, the Aleut Corporation.

Reporter information

Type Date Name Affiliation Comment
Reporter 23-JAN-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.