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

Lois Dome

Occurrence in Alaska, United States with commodity Manganese
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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 10003345
MRDS ID A106090
Record type Site
Current site name Lois Dome

Geographic coordinates

Geographic coordinates: -142.78312, 67.71985 (WGS84)
Relative position Location plotted is locality 4 of Barker (1981, p. 33), about 1 mi (1.6 km) northeast of Lois Dome summit; located to within 2 mi (3.2 km).

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Coleen C-4(quadrangle 1:63,360 scale)

Coleen NW(quadrangle 1:100,000 scale)

Coleen C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Arctic 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
Manganese Critical Primary

Materials information

Materials Type of material
Psilomelane Ore

Nearby scientific data

(1) -142.78312, 67.71985
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = One inch (25.4 mm) vein of psilomelane in red ferruginous argillite. Minor gold values reported in a manganiferous pebble from this same locality; Mn oxide common in heavy mineral concentrates (Barker, 1981, p.38).

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Sheenjek

Reference information

Bibliographic references

  • Deposit

    Barker, J.C., and Clautice, K.H., 1978, Mineral reconnaissance of the Porcupine River region: a summary report: U.S. Bureau of Mines Open-File Report 87-78, 20 p.

  • Deposit

    Barker, J.C., 1981, Mineral investigations in the Porcupine River drainage, Alaska: U.S. Bureau of Mines Open-File Report 27-81, 189 p., 2 sheets.

Comments on the references

  • Primary Reference = Barker (1981)

General comments

Subject category Comment text
Deposit Model Name = Lode
Deposit Other Comments = See MAS/MILS Sequence # 0020330011 (USBM, 1995)

Reporter information

Type Date Name Affiliation Comment
Reporter 12-SEP-1996 J.M. Schmidt U.S. Geological Survey
Reporter 12-SEP-1996 J.H. Dover 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.