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Big Creek Placer

Past Producer in Alaska, United States with commodities Gold, Tin
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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. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10097570
MRDS ID A015526
Record type Site
Current site name Big Creek Placer
Related records 10208727

Geographic coordinates

Geographic coordinates: -155.46145, 64.662 (WGS84)
Location accuracy 250(meters)
Relative position 5 MILES SSE OF RUBY.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ruby C-5(quadrangle 1:63,360 scale)

Ruby N(quadrangle 1:100,000 scale)

Ruby(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Dineega 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
Tin Critical Tertiary

Materials information

Materials Type of material
Cassiterite Ore
Gold Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -155.46145, 64.662
ListMap

Economic information

Comments on the geologic information

  • NO KNOWN CONTACT BETWEEN SLATY BEDROCK AND GRANITE IN VALLEY, BUT FRAGMENTS OF VEIN QUARTZ WITH TOURMALINE PRESENT. ; MAJOR.UNITS: BEDROCK IS SLATE. ; REG.COM: GOLD AND CASSITERITE APPARENTLY CLOSE TO THEIR SOURCE.

Economic information about the deposit and operations

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

Comments on the workings information

  • 15 HOLES SUNK 15 TO 60 FEET TO SLATY BEDROCK. MOST OF GROUND IS NOT FROZEN AND DIFFICULT TO WORK BY DRIFT MINING.

Comments on development

  • SPORADIC MINING FROM 1907 TO 1940'S. NO SIGN OF ACTIVITY IN 1975-77.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit GOLD AND CASSITERITE REPORTED TO BE DISTRIBUTED VERTICALLY THROUGH GRAVEL OF PAYSTREAK. GROUND NEAR HEAD OF CREEK IS 15 TO 20 FT. DEEP, INCLUDING 1-15 FT. OF GRAVEL BENEATH MUCK. PLACERS HAVE NOT BEEN EXTENSIVELY OR SYSTEMATICALLY PROSPECTED; PAYSTREAK INFERED TO BE 30 FT. WIDE, 1-15 FT. THICK, AND TO EXTEND POSSIBLY AS MUCH AS 5,000 FT. DOWNSTREAM FROM THE MOUTH OF COX PUP. COLORS OF GOLD IN ALL 15 PROSPECT HOLES; CONSIDERABLE PYRITE FOUND IN ALL THESE HOLES, PYRITE IN GRAVEL OR ATTACHED TO LARGE FRAGMENTS OF BEDROCK.
Deposit STREAM GRADIENT APPROXIMATELY 82 FT. PER MILE. BIG CREEK FLOWS IN A WIDE, SHALLOW VALLEY WITH VERY GENTLY SLOPING SIDES. THE VALLEY IS ABOUT 1.5 MILES WIDE BETWEEN THE DIVIDES, AND THE FLOOR IS APPROXIMATELY 300 FT. WIDE. ; 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-JUL-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.