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  3. Mineral Resource Data System (MRDS)

Unnamed (near Slate Creek)

Prospect 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. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10001858
MRDS ID A012677
Record type Site
Current site name Unnamed (near Slate Creek)

Geographic coordinates

Geographic coordinates: -164.8472, 64.89541 (WGS84)
Relative position Slate Creek is a south tributary to the Pilgrim River. The mouth of Slate Creek is about 3.5 miles downstream from the head of the Pilgrim River on Salmon Lake. This location is on the west side of Slate Creek about 1.5 mile upstream from its mouth. It is locality 1 of Cobb (1972, MF 445; 1978, OF 78-181).

Site location context

Political divisions (FIPS codes)

Nome(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Solomon D-6(quadrangle 1:63,360 scale)

Solomon NW(quadrangle 1:100,000 scale)

Solomon(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
Calcite Gangue
Kaolin Gangue
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Clay and carbonate replacement of host rocks and quatz-calcite veining.

Host and associated rocks

  • Host or associated Host
    Rock type
    Stratigraphic age (youngest) Cretaceous

Nearby scientific data

(1) -164.8472, 64.89541
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Greenstone is cut by altered, fine-grained, felsic (?) dikes in this area; the feldspars in the dikes has been replaced by sericite and kaolin. A 3-foot-wide altered dike contains ferruginous calcite in fracture fillings and replacements that are in turn cut by quartz-calcite veinlets; free gold has been panned from crushed vein material (Chapin, 1914). Another 10-feet-wide dike nearby contains quartz, epidote, chlorite, albite, calcite, and tremolite(?). The greenstone host rock is completely recrystallized and contains hornblende, chlorite, epidote, garnet, pyrite, albite, rutile and sphene. Bedrock in this area is mostly part of a lower Paleozoic metasedimentary assemblage (Till and others, 1986).
  • Age = Cretaceous Mineralization postdates regional mid-Cretaceous metamorphism. The host dikes may be Cretaceous in age like many felsic intrusive rocks in the Kigluaik Mountains to the north or possibly younger.
  • Age = Host dikes may be Cretaceous.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Probably inactive

Mining district

District name Kougarok

Comments on the workings information

  • Workings / Exploration = A small surface open cut was used to explore this prospect in 1913 (Chapin, 1914).

Reference information

Bibliographic references

  • Deposit

    Cobb, E.H., 1972, Metallic resources map of the Solomon quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-445, scale 1:250,000.

  • Deposit

    Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Solomon quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-181, 185 p.

  • Deposit

    Till, A.B., Dumoulin, J.A., Gamble, B. ., Kaufman, D.S., and Carroll, P.I., 1986, Preliminary geologic map and fossil data, Soloman, Bendeleben, and southern Kotzebue quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 86-276, 10 p., 3 plates, scale 1:250,000.

  • Deposit

    Chapin, Theodore, 1914, Placer mining in the Yukon-Tanana region: U.S. Geological Survey Bulletin 592-J, p. 357-362.

Comments on the references

  • Primary Reference = Chapin, 1914

General comments

Subject category Comment text
Deposit Model Name = Auriferous carbonate and quartz-carbonate veins and replacements in felsic (?) dikes.

Reporter information

Type Date Name Affiliation Comment
Reporter 19-AUG-1999 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.