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Grub Gulch

Past Producer 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. Mineral occurrence model information
  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 10002038
MRDS ID A012886
Record type Site
Current site name Grub Gulch
Related records 10136377

Geographic coordinates

Geographic coordinates: -165.38968, 64.71873 (WGS84)
Relative position This placer gold mine is on Grub Gulch, an east tributary to lower Goldbottom Creek. The mouth of Grub Gulch is about 1.5 miles upstream of the confluence of Goldbottom Creek and North Fork Snake River. About 1,400 feet of Grub Gluch has been placer mined upstream of the Snake River road crossing. The map location is at the approximate midpoint of the workings, in the SW1/4 section 12, T. 9 S., R. 33 W., Kateel River Meridian. This is locality 88 of Cobb (1972 [MF-463], 1978 [OFR 78-93]).

Site location context

Political divisions (FIPS codes)

Nome(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nome C-1(quadrangle 1:63,360 scale)

Solomon NW(quadrangle 1:100,000 scale)

Nome(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Nome(hydrologic unit)

Norton Sound(hydrologic accounting unit)

Northwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Sitnasuak Native Corporation(ANCSA Village)

ANCSA Village NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Mineral occurrence model information

Model code 119
USGS model code 39a
Deposit model name Placer Au-PGE
Mark3 model number 54

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel

Nearby scientific data

(1) -165.38968, 64.71873
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The lower half-mile or so of Grub Gulch, at surface elevations less than 300 feet, was placer mined by hand or horse-drawn scrapers and apparently worked out before 1905 (Collier and others, 1908; Moffit, 1913). The pay streak was 40 feet wide and 5 to 6 feet thick in gravels containing schist, vein quartz, and some granite boulders. Recovered gold was coarse, rough, and reported to run 3.75 dollars (about 0.18 ounce) per cubic yard (Moffit, 1913). Grub Gulch crosses graphitic quartz schists, calcareous mica schist, and a 150-foot-thick, east-dipping, highly competent granitic orthogneiss (C.C. Hawley, written communication for Kennecott Exploration Company, 1995). The placer mainly overlies mica schist bedrock that probably has an early Paleozoic protolith age (Hummel, 1962 [MF 247]; Sainsbury, Hummel, and Hudson, 1972 [OFR 72-326]; Till and Dumoulin, 1994; Bundtzen and others, 1994). The granitic boulders in Grub Gulch probably are derived from the orthogneiss upstream. In other nearby creeks that partly traverse orthogneiss (for example, Seattle Creek, NM200), quartz boulders are abundant along and immediately downstream from, orthogneiss bedrock sections of the creek, suggesting that some of the gold may have been derived from quartz veins at the contacts of the orthogneiss.
  • Age = Quaternary.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Nome

Comments on the workings information

  • Workings / Exploration = This placer deposit was worked by hand or horse-drawn scrapers mainly between 1903 and 1906. The pay averaged about 0.18 ounce of gold per cubic yard.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = This report

General comments

Subject category Comment text
Deposit Model Name = Alluvial placer Au (Cox and Singer, 1986; model 39a).

Reporter information

Type Date Name Affiliation Comment
Reporter 10-JUL-00 Hawley, C.C. Hawley Resource Group
Reporter 10-JUL-00 Travis L. Hudson 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.