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Brown Zinc

Prospect in Alaska, United States with commodities Silver, Gold, Copper, Lead, Zinc
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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. 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 10308162
Record type Site
Current site name Brown Zinc
Alternate or previous names Suzy

Geographic coordinates

Geographic coordinates: -160.46942, 55.29024 (WGS84)
Relative position This prospect is located on western Popof Island on sea cliffs 100 feet above sea level approximately 1.5 miles west of Red Cove (Christie, 1974, color anomaly 91?; MacKevett and Holloway, 1977, locality 11; Wilson and others, 1988, locality 11). The map site is due south of hill 545. The location is accurate to within 1,000 feet.

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Port Moller B-2 SE(quadrangle 1:24,000 scale)

Shumagin Islands N(quadrangle 1:100,000 scale)

Port Moller(quadrangle 1:250,000 scale)

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
Gold Primary
Copper Secondary
Lead Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrite Ore
Sphalerite Ore
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) The country rock 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) -160.46942, 55.29024
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Suzy prospect is in volcanic rocks belonging to the Popof volcanic rocks of late Eocene to early Oligocene age (Wilson and others, 1995). A 130-foot adit and 18-foot drift are evidence of work probably done in the early 1900's. The deposit was mapped and sampled by UNC Teton Exploration Drilling Company in 1982 (Peterson and others, 1982), and by Battle Mountain Exploration Company in 1986. It consists of a system of veins that strikes N 7 E and dips steeply to the northwest. It has a 200-foot vertical extent and a possible strike length of 700 feet. The vein system is 6 to 15 feet in width and is made up of several subparallel quartz-calcite veins. Pyrite, sphalerite, galena, and chalcopyrite are present, especially along the vein margins. Channel samples collected from surface exposures by UNC Teton Exploration Drilling Company assayed as much as 0.624 ounce of gold and 1.63 ounces of silver per ton and 13.8 percent combined copper, lead, and zinc Three continuous chip samples collected by Battle Mountain Exploration Company over 6 feet of vein averaged 0.212 ounce of gold per ton. At the end of the drift, 6 feet of sulfide-rich rock assayed only 0.04 ounce of gold per ton. A 2-foot channel sample collected at the end of the drift by UNC Teton Exploration Drilling, Inc. assayed 410 ppm copper, 0.85 percent lead, 14,100 ppm zinc, 0.06 ppm gold, and 4.6 ppm silver. There is no apparent relationship between gold values and sulfide content.
  • 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 = Early workings on this prospect included a 130-foot adit and an 18-foot drift. UNC Teton Exploration Drilling Company sampled and mapped the deposit in 1982. Battle Mountain Exploration Company sampled it in 1986. The U.S. Geological Survey sampled the prospect in the 1980s. A dump sample 82AWs50, assayed 3 ppm silver, 300 ppm arsenic, 100 ppm copper, 10,000 ppm lead, and 4,700 ppm zinc.

Reference information

Bibliographic references

  • Deposit

    Atwood, W.W., 1911, Geology and mineral resources of parts of the Alaska Peninsula: U.S. Geological Survey Bulletin 467, 137 p.

  • Deposit

    Webber, B.S., Moss, J.M., Rutledge, F.A., and Sanford, R.S., 1946, Reconnaissance examinations of parts of the Alaska Peninsula and Aleutian Islands southwestern Alaska: U.S. Bureau of Mines, unpublished report of investigations, 40 p. (Unpublished report held by the U.S. Geological Survey, Anchorage.)

  • Deposit

    U.S. Bureau of Mines, 1973, Alaska 1:250,000-scale quadrangle map overlays showing mineral deposit locations, principal minerals, and number and type of claims: U.S. Bureau of Mines Open-File Report 20-73, 95 overlays (updated in 1986, 1987).

  • Deposit

    Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)

  • 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

    Angeloni, L.M., Wilson, F.H., and Sutlet, S., 1985, Map and tables showing preliminary rock geochemical data, Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Open-File Report 85-470, 179 p., 1 map sheet, scale 1:250,000.

  • Deposit

    Pilcher, S.H., 1986, Unga project: Battle Mountain Exploration Company report, 33 p. (Report held by the Aleut Corporation, Anchorage, Alaska.)

  • 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.

  • Deposit

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.

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 03-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.