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  3. Mineral Resource Data System (MRDS)

Brumfield

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. 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 10307454
Record type Site
Current site name Brumfield

Geographic coordinates

Geographic coordinates: -147.43295, 64.96967 (WGS84)
Relative position The claims that constitute the Brumfield mine lie in the valley of Hill Creek, a tributary of Gilmore Creek, in sec. 30, T. 2 N., R. 2 E., Fairbanks Meridian (Saunders, 1963). It is directly south of the Hill Creek mine (FB109).

Site location context

Political divisions (FIPS codes)

Fairbanks North Star(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fairbanks D-1(quadrangle 1:63,360 scale)

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

Fairbanks(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Nearby scientific data

(1) -147.43295, 64.96967
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Hill (1933) shows a granite porphyry extending along the ridge south of Gilmore Creek from the head of Engineer Creek to the head of Pearl Creek, a distance of about 7 miles. All of the bedrock exposed by placer mining is part of this intrusion (Saunders, 1963). Gold is found throughout the granitic bedrock and also occurs in narrow quartz veinlets that carry visible free gold (Saunders, 1963). Saunders (1963) reported that placer mining was done using a small crawler-type tractor for stripping moss and one or two feet of overburden. The remaining two to four feet of gravel was shoveled by hand into a 6-inch sluice box. The descriptions are somewhat unclear, but this may be a residual placer on a decomposed, quartz-veined granite.

Economic information about the deposit and operations

Development status Past Producer

Comments on exploration

  • Status = Inactive

Mining district

District name Fairbanks

Comments on the production information

  • Production Notes = The production data are not available.

Comments on the workings information

  • Workings / Exploration = Saunders (1963) reported that placer mining was done using a small crawler-type tractor for stripping moss and one or two feet of overburden. The remaining two to four feet of gravel was shoveled by hand into a 6-inch sluice box.

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Saunders, 1963

General comments

Subject category Comment text
Deposit Model Name = Residual placer on a decomposed, quartz-veined granite porphyry(?)

Reporter information

Type Date Name Affiliation Comment
Reporter 31-JUL-01 J.R. Guidetti Schaefer and C.J. Freeman Avalon Development Corporation

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.