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Boulder Creek Placer

Past Producer in Alaska, United States with commodities Gold, REE
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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. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10002744
MRDS ID A015195
Record type Site
Current site name Boulder Creek Placer

Geographic coordinates

Geographic coordinates: -151.09751, 65.14738 (WGS84)

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

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

Tanana SE(quadrangle 1:100,000 scale)

Tanana 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-371, LOC. 22, 23. SCATTERED PLACERS MARKED ALONG UPPER SECTION OF BOULDER CREEK ON TANANA (A-2, 3). COORDINATES GIVEN ARE FOR MF-371-22, TANANA (A-2). 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
REE Critical Tertiary

Materials information

Materials Type of material
Garnet Gangue
Ilmenite Gangue
Rutile Gangue
Sphene Gangue
Zircon Gangue
Gold Unknown
Monazite Unknown

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Argillite
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone

Nearby scientific data

(1) -151.09751, 65.14738
ListMap

Economic information

Ore body information

  • Width 365.76M

Comments on the geologic information

  • ASYMMETRICAL VALLEY WITH A BROAD BENCH IN GENTLER NORTH WALL. SOUTH VALLEY WALL STEEP; NO GRAVEL. ZIRCON AND MONAZITE ARE RADIOACTIVE. ; MAJOR.UNITS: STREAM HEADS IN CRETACEOUS (90 M.Y.) QUARTZ MONZONITE OF ROUGHTOP MTN. PLUTON AND DEVONIAN OR PERMIAN METASEDIMENTARY ROCKS. MOST OF STREAM IN AREA UNDERLAIN BY JURASIC-CRETACEOUS SANDSTONE, SHALE, SILTSTONE, AND ARGILLITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1915
Year of last production 1939

Mining district

District name Hot Springs

Land status

Ownership category State

Comments on development

  • MINING REPORTED 1915-17, 1930-39, AND 1965-72. MINED BY HYDRAULIC METHODS. TOTAL PRODUCTION UNKNOWN.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit GOLD IN LARGE BODY OF LOW GRADE GRAVEL ON BROAD NORTH WALL BENCH. PLACERS EXTEND FOR SEVERAL MILES ABOUT 1,000 FT. NORTH OF CREEK. ALLUVIUM 8-12 FT. DEEP.
Deposit STREAM GRADIENT ABOUT 75 FEET PER MILE. LOCATION DESCRIPTION FOR ENTIRE LENGTH OF UPPER COURSE OF BOULDER CREEK. ; 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-MAY-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.