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

Unnamed (on Little Sitkin Island)

Occurrence in Alaska, United States with commodity Sulfur
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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 10308508
MRDS ID A013206
Record type Site
Current site name Unnamed (on Little Sitkin Island)
Related records 10094075

Geographic coordinates

Geographic coordinates: 178.55962, 51.93575 (WGS84)
Relative position This site is located on the northeast part of Little Sitkin Island, at an elevation of about 2500 feet on the south side of a breached crater. It is approximately 2.2 miles west of Pratt Point. Location is accurate to within 1000 feet.

Site location context

Political divisions (FIPS codes)

Aleutians West(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rat Islands C-5(quadrangle 1:63,360 scale)

Rat Islands E(quadrangle 1:100,000 scale)

Rat Islands SW(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Western Aleutian Islands(hydrologic unit)

Aleutian Islands(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Alaska Maritime National Wildlife Refuge(National Wildlife Refuge)

National Wildlife Refuge FWS(Type of land area)

FWS(Federal land areas administered by FWS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Sulfur Primary

Comments on the commodity information

  • Ore Material = Native sulfur

Materials information

Materials Type of material
Sulfur Ore

Nearby scientific data

(1) 178.55962, 51.93575
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Native sulfur occurs in a fumarolic area covering approximately 10 acres on the south side of a breached crater. It replaces several low-silica flow members of the Little Sitkin Dacite of Quaternary age (Snyder, 1959, p. 206-206).? Rocks in the central part of the crater have been intensely altered to white clay. Sulfur occurs as veins and vug linings in the clay. Sulfur also occurs as surface deposits composed of massive, mammillary aggregates of sulfur crystals without much rock clay.? One sample of the surface deposit collected by Snyder assayed 95.8 percent sulfur. Assuming a 3-meter thick surface deposit extending over 10 acres he estimated a maximum possible potential of 200,000 tons. He considered, however, that the actual tonnage is probably much smaller.
  • Age = Quaternary.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Aleutian Islands

Comments on the reserve resource information

  • Reserves = Snyder (1959) estimated 200,000 tons as a maximum possible resource. Actual tonnage is probably much smaller.

Comments on the workings information

  • Workings / Exploration = Snyder (1959) collected several samples for analyses. One sample of the surface deposit assayed 95.8 percent sulfur.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Snyder, 1959

General comments

Subject category Comment text
Deposit Model Name = Fumarolic sulfur
Deposit Other Comments = Site is located within Alaska Maritime Natural Wildlife Refuge.

Reporter information

Type Date Name Affiliation Comment
Reporter 24-JAN-2000 S.H. Pilcher U.S. Geological Survey

Beyond USGS

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

Coordinate doesn't match listed state

The coordinates (51.9357, 178.5596) do not appear to fall inside any U.S. state, but this record is listed as being in Alaska, United States.

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.