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Grubstake Creek Placer

Past Producer in Alaska, United States with commodities Gold, Mercury, 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. Host and associated rocks
  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 10002869
MRDS ID A015354
Record type Site
Current site name Grubstake Creek Placer
Related records 10208937

Geographic coordinates

Geographic coordinates: -148.20843, 64.02963 (WGS84)

Site location context

Political divisions (FIPS codes)

Denali(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fairbanks A-3(quadrangle 1:63,360 scale)

Fairbanks S(quadrangle 1:100,000 scale)

Fairbanks C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-410, LOC. 77, 78, 79. PLACER MINES, LOCATIONS 77 AND 78, MARKED IN SE CORNER OF FAIRBANKS (A-3). COORDINATES GIVEN FOR MINE MARKED NEAR MOUTH OF AURIFEROUS SE TRIBUTARY. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary
Mercury Tertiary
Tungsten Critical Tertiary

Materials information

Materials Type of material
Cinnabar Ore
Gold Ore
Scheelite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Chert
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -148.20843, 64.02963
ListMap

Economic information

Comments on the geologic information

  • CREEK RISES ON RIDGE OF NENANA GRAVEL. ; MAJOR.UNITS: BEDROCK IN HEADWATER SECTION IS NENANA GRAVEL. BEDROCK FOR MIDDLE AND LOWER PART OF CREEK IS INTERBEDDED CLAY, SAND, GRAVEL, AND COAL OF TERTIARY COAL-BEARING FORMATION. ; REG.COM: GOLD PROBABLY RECONCENTRATED FROM NENANA GRAVELS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Bonnifield

Comments on development

  • INTERMITTANT MINING, 1905 TO 1940. MINING BY OPEN CUTS. A FEW MILES OF DITCHES BUILT.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit GOLD IN BASAL 2 FT. OF STREAM GRAVELS. THICKNESS OF GRAVELS MINED RANGES FROM A FEW INCHES TO 6 FT. GOLD ALSO ON SURFACE OF CLAY BEDROCK. MOST OF MINING IN LOWER MILE OF CREEK; ALSO IN MIDDLE SECTION OF TRIBUTARY ENTERING FROM SE NEAR MOUTH AND IN SPOTS NEAR HEAD. IN LOWER MILE PAY STREAK 25-75 FT. WIDE, BUT OUTSIDE 25 FT. IS REPORTED TO BE PATCHY.
Deposit STREAM GRADIENT RANGES FROM 100 FEET PER MILE AT MOUTH TO AROUND 300 FT. PER MILE AT HEAD. LOCATION DISCRIPTION FOR ENTIRE LENGTH OF GRUBSTAKE CREEK AND FOR TRIBUTARY ENTERING NEAR MOUTH FROM THE SE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1987 Powers, M.T. (Huber, D.F.) U.S. Geological Survey

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.