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  3. Mineral Resource Data System (MRDS)

Dahl Creek

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. Materials information
  7. Alteration
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10307262
Record type Site
Current site name Dahl Creek

Geographic coordinates

Geographic coordinates: -164.71736, 65.36432 (WGS84)
Relative position This is approximatly located near the mouth of Dahl Creek (probably within a half mile). Dahl Creek is a northeast -flowing tributary to Quartz Creek. Quartz Creek crosses the Nome-Taylor road at about mile 78.5, Brakes Bottom. The mouth of Dahl Creek on Quartz Creek is about 8,000 feet upstream from the road crossing. This is the location used for altered bedrock reported by Sainsbury and others (1969). It is locality 4 of Cobb (1972; MF 417; 1975; OFR 75-429).

Site location context

Political divisions (FIPS codes)

Nome(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bendeleben B-6(quadrangle 1:63,360 scale)

Bendeleben SW(quadrangle 1:100,000 scale)

Bendeleben(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Imuruk Basin(hydrologic unit)

Norton Sound(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Alteration

  • (Local) Schist in this area is apparently highly sericitized and clay-rich (Sainsbury and others, 1969). The presence of broken quartz veins in the alteration zones may indicate that the alteration is developed along fault structures.

Nearby scientific data

(1) -164.71736, 65.36432
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Sainsbury and others (1969) describe a highly sericitized, clay-rich altered zone containing groundup and angular vein quartz but do not report any geochemical data for this area. Altered schist is apparently common where bedrock is exposed in the Dahl Creek drainage. Early reports described the alluvial pay in the main Dahl Creek drainage to be on a false bedrock of clay below which there was a quartz gravel (Collier and others, 1908). A test shaft, which did not reach bedrock, indicated this deep gravel to be at least 187 feet thick. However, Sainsbury and others (1969) concluded that the false bedrock described by early reports was instead altered bedrock. Bedrock is locally exposed in the area, primarily on the crest of nearby uplands, but Sainsbury and others (1969) note some bedrock in the drainage 7,000 feet above the mouth. All known bedrock in the area is part of a lower Paleozoic metasedimentary assemblage (Sainsbury and others, 1969; Till and others, 1986).
  • Age = Possibly mid-Cretaceous; if gold-bearing lode structures are present here they may be similar in age to some lode gold deposits of southern Seward Peninsula. The southern Seward Peninsula lode gold deposits formed as a result of mid-Cretaceous metamorphism (Apodoca, 1994; Ford, 1993, Ford and Snee, 1996; Goldfarb and others, 1997) that accompanied regional extension (Miller and Hudson, 1991) and crustal melting (Hudson, 1994). This higher temperature metamorphism was superimposed on high pressure/low temperature metamorphic rocks of the region.

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Kougarok

Comments on the workings information

  • Workings / Exploration = Local bedrock exposures along Dahl Creek are the result of open-cut placer mining operations, particulaly dozer and sluice operations since WWII.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Sainsbury and others, 1969

General comments

Subject category Comment text
Deposit Model Name = Gold-bearing quartz veins and schist

Reporter information

Type Date Name Affiliation Comment
Reporter 15-MAR-99 Travis L. Hudson Applied Geology

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.