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  3. Mineral Resource Data System (MRDS)

Unnamed (on Wrangell Narrows)

Prospect in Alaska, United States with commodity 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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mining district
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10308040
Record type Site
Current site name Unnamed (on Wrangell Narrows)

Geographic coordinates

Geographic coordinates: -132.96187, 56.53974 (WGS84)
Relative position As described by Roehm (1945 [IR 195-37]) the location of this site is 'In Wrangell Narrows about 2 3/4 mile north of Point Alexander and 1 1/5 mile due north of Midway rock. Old cut a few feet up from high tide line.' This location is approximately in the vicinity of December Point but the information given is insufficient to determine whether the prospect is on the Woewodski Island side of the Mitkof Island side of Wrangell Narrows. The coordinates for the site are arbitrarily placed in the middle of Wrangell Narrows and the site is probably within a quarter mile of this location.

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Petersburg C-3 SW(quadrangle 1:24,000 scale)

Petersburg N(quadrangle 1:100,000 scale)

Petersburg(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Antimony Critical Primary

Materials information

Materials Type of material
Pyrite Ore
Stibnite Ore

Nearby scientific data

(1) -132.96187, 56.53974
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The only published information on the site is given by Roehm (1945 [IR 195-37]). Needle-like crystals of stibnite and pyrite occur along fractures in reddish-colored granite. One sample assayed 13.9% Sb and traces of gold and silver . Brew (1997 [OF 97-156-I]) shows a small Cretaceous diorite pluton that extends across Wrangell Narrows at or in the vicinity of this site; the pluton is bordered on the Mitkof side of the Wrangell Narrows by a large Cretaceous hornblende-diorite pluton and on the Woewodski Island it is surrounded by Mesozoic greenstone and greenschist.
  • Age = Cretaceous or younger if the stibnite-bearing fractures cut the Cretaceous diorite plutons.

Economic information about the deposit and operations

Development status Prospect

Comments on exploration

  • Status = Probably inactive

Mining district

District name Petersburg

Comments on the production information

  • Production Notes = None

Comments on the workings information

  • Workings / Exploration = A prospect little known in the literature and apparently not active since the 1940's.

Reference information

Comments on the references

  • Primary Reference = Roehm, 1945 (IR 195-37)

General comments

Subject category Comment text
Deposit Model Name = Stibnite along fractures.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-98 H.C. Berg and D.J. Grybeck 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.