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No Grub Creek

Producer in Alaska, United States with commodities Gold, Bismuth, Tungsten
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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. 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 10107525
MRDS ID A012492
Record type Site
Current site name No Grub Creek
Related records 10185680

Geographic coordinates

Geographic coordinates: -145.61397, 64.67581 (WGS84)
Relative position No Grub Creek is roughly 2 miles long and drains south into the Salcha River at the town of Caribou. The Alaska Division of Mining Kardex file system reports placer mining 1 mile along the base of No Grub Creek. The approximate center of the mining activity is in NW1/4NE1/4 section 7, T. 3 S., R. 11 E., of the Fairbanks Meridian. A tractor trail from the town of Caribou, and the Salcha River provide access to the lower No Grub Creek drainage. An airstrip on the Salcha River, shown on U.S.G.S. maps, is washed out and unsuitable for use (M.B. Werdon, oral communication, 1998). It is locality 17 of Cobb and Eberlein (1980), who summarized relevant references under the name 'No Grub Creek'.

Site location context

Political divisions (FIPS codes)

Fairbanks North Star(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Big Delta NE(quadrangle 1:100,000 scale)

Big Delta C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Bismuth Critical Secondary
Tungsten Critical Secondary

Materials information

Materials Type of material
Bismuth Ore
Gold Ore
Scheelite Ore
Graphite Gangue
Quartz Gangue

Mineral occurrence model information

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

Nearby scientific data

(1) -145.61397, 64.67581
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The bedrock in the region is schist, gneiss, some granite, and minor amounts of serpentinite and marble. The schist is composed of quartz, feldspar, and mica, with localized garnetiferous and marble zones. The gneiss is coarse to fine grained with various amounts of quartz, feldspar, hornblende, and biotite. They have suspected protoliths of Precambrian and Paleozoic sedimentary and igneous rocks. The intrusive bodies in the area range in composition from granodiorite to quartz monzonite with Cretaceous to Tertiary K-Ar ages (Weber and others, 1978). The intrusive bodies in the area range in composition from granodiorite to quartz monzonite with Cretaceous to Tertiary K-Ar ages (Weber and others, 1978). The gravels in the region average 18 to 20 feet in thickness and contain a variety of schist, gneiss, granite, and vein quartz (Prindle, 1906). Brooks (1908) reported the fineness of the gold in the Salcha region to be higher than that mined in the Richardson district. ? It is reported that coarse gold, native bismuth, and minor scheelite were found in quartz veins in the No Grub Creek drainage (Menzie and Foster, 1979). Joesting (1942) noted an assay of gold and bismuth reported by C.F. Shield in 1938. Hasler and others (1973) report igneous and metamorphic hosted quartz veins containing variable amounts of native bismuth, bismuthinite, gold, graphite, and scheelite in the No Grub Creek drainage. Glover (1920?) reported a range in gold fineness of 868 to 878 for No Grub Creek.? Placer gold was first discovered in the Salcha River area in 1905. Prospecting initially occurred on the Butte Creek (BD006) and soon extended to nearby Caribou Creek (BD009), Pasco Creek (BD031), and Gold Creek (BD015) and associated tributaries. Live water and thawed ground presented the biggest obstacles during prospecting (Prindle, 1906; B 284). No Grub Creek was reported as a major regional producer through 1915 (Brooks ,1916). Smith (1942) reported that No Grub Creek was mined using methods other than dredging. The property was mined hydraulically in the late 1930's and early 1940's (C.F. Shield, unpublished data, 1979). Eberlein and others (1977) report intermittent mining continued through the late 1970's. In 1997 and 1998, there was small-scale placer mining and prospecting along No Grub Creek (M.B. Werdon, oral communication, 1998). Exploration to determine the lode source for the placer gold is currently being conducted in the No Grub Creek drainage (R. Van Nieuwenhuyse, oral communication, 1998). ? Historically, No Grub Creek placer has been grouped with the mines and prospects of the Richardson district. From 1905 through 1921, gold production for the Richardson district was approximately 95,000 ounces of gold and 24,000 ounces of silver (Bundtzen and Reger, 1977). During the late 1930's and early 1940's, values for two years of gold production on No Grub Creek were $43,000 and $100,000. But only 1,000 troy ounces of gold were recovered during a third year, and the operation was shut down (C.F. Shield, unpublished data, 1979).

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic

Comments on exploration

  • Status = Active

Mining district

District name Fairbanks

Comments on the production information

  • Production Notes = Historically, No Grub Creek placer has been grouped with the mines and prospects of the Richardson district. From 1905 through 1921, gold production for the Richardson district was approximately 95,000 ounces of gold and 24,000 ounces of silver (Bundtzen and Reger, 1977). During the late 1930's and early 1940's, values for two years of gold production were $43,000 and $100,000. But only 1,000 troy ounces of gold were recovered during a third year, and the operation was shut down (C.F. Shield, unpublished data, 1979).

Comments on the workings information

  • Workings / Exploration = Placer gold was first discovered in the Salcha River area in 1905. Prospecting initially occurred on Butte Creek (BD006) and soon extended to nearby Caribou Creek (BD009), Pasco Creek (BD031), and Gold Creek (BD015) and associated tributaries. Live water and thawed ground presented the biggest obstacles during prospecting (Prindle, 1906; B 284). No Grub Creek was reported as a major regional producer through 1915 (Brooks,1916). Smith (1942) reported No Grub Creek was mined using methods other than dredging. The property was mined hydraulically in the late 1930's and early 1940's (C.F. Shield, unpublished data, 1979). Eberlein and others (1977) report intermittent mining through the late 1970's. Exploration to determine the lode source for the placer gold is currently being conducted in the No Grub Creek drainage (R. Van Nieuwenhuyse, oral communication, 1998).

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Menzie and Foster, 1979

General comments

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

Reporter information

Type Date Name Affiliation Comment
Reporter 26-APR-1999 Cameron S. Rombach Alaska Division of Geological and Geophysical Surveys

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

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