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

Unnamed (east of Sitkagi Bluffs)

Occurrence in Alaska, United States with commodity Gold
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Host and associated rocks
  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 10002473
MRDS ID A013405
Record type Site
Current site name Unnamed (east of Sitkagi Bluffs)

Geographic coordinates

Geographic coordinates: -140.47228, 59.69967 (WGS84)
Relative position The occurrence is a beach placer, locally auriferous, that extends between Sitkagi Bluffs (the front of Malaspina Glacier) and Point Manby. It includes auriferous sample 33 of Reimnitz and Plafker (1976, pl. 1). The coordinate location is about half way between Manby Point and the Bluffs--the outfall of Malaspina Glacier. The beach segment is about 10 miles long.

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Yakutat C-7 NW(quadrangle 1:24,000 scale)

Yakutat NW(quadrangle 1:100,000 scale)

Yakutat(quadrangle 1:250,000 scale)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • Ore Material = Gold (native)

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Sand and Gravel
    Stratigraphic age (youngest) Holocene
  • Host or associated Host
    Rock type Unconsolidated Deposit > Till

Nearby scientific data

(1) -140.47228, 59.69967
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The locally auriferous beach between Sitkagi Bluffs and Point Manby was produced by wave and long shore action on glacial moraine and outwash from the Malaspina Glacier and on alluvium brought down by the high energy streams that drain the glacier. The ultimate source of gold is in the upland hard rock terrane, but intermediate sources exist, as in the glacial deposits and the Yakutat Formation (Reimnitz and Plafker, 1976).? Reimnitz and Plafker (1976) also found gold at the three localities that they sampled along the beach, including a maximum of 0.890 ppm gold in sample number 33.
  • Age = Holocene

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Yakutat

Comments on the production information

  • Production Notes = None known.

Comments on the workings information

  • Workings / Exploration = This segment of the Yakutat beach placers was sampled in at least three locations by Reimnitz and Plafker (1976, samples numbers 33, 34, and 35). All three sample localities had detectable gold; samples 33 and 35, respectively, contained 0.890 and 0.030 ppm of gold. The gold was determined by atomic absorption; some of it, therefore, may be in combined rather than free state. There are no workings.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Reimnitz and Plafker, 1976.

General comments

Subject category Comment text
Deposit Model Name = Placer; modern beach, largely derived from glacial-fluvial material brought down by Malaspina Glacier.
Deposit Other Comments = the entire length of the beach placer is in Wrangell-St. Elias National Park and Preserve.

Reporter information

Type Date Name Affiliation Comment
Reporter 14-DEC-98 Hawley, C.C. Hawley Resource Group

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.