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Mason 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. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10003050
MRDS ID A015574
Record type Site
Current site name Mason Creek Placer
Related records 10135907

Geographic coordinates

Geographic coordinates: -153.37674, 65.22595 (WGS84)
Relative position 36 AIRLINE MILES WEST OF TANANA

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Melozitna A-1(quadrangle 1:63,360 scale)

Tanana SW(quadrangle 1:100,000 scale)

Melozitna(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-396, LOC. 4, 5. PLACER DEPOSITS ALONG MASON CREEK JUST BELOW THE MOUTH OF HENDERSON AND BUSTER CREEKS. COORDINATES GIVEN FOR PLACER JUST BELOW THE MOUTH OF HENDERSON CREEK. 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
Tin Critical Tertiary

Materials information

Materials Type of material
Cassiterite Ore
Gold Ore

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Gravel

Nearby scientific data

(1) -153.37674, 65.22595
ListMap

Economic information

Comments on the geologic information

  • MAJOR.UNITS: BEDROCK IS PALEOZOIC OR PRECAMBRIAN QUARTZ-SERICITE AND QUARTZ-CHLORITE SCHISTS CUT BY UNMINERALIZED WHITE QUARTZ VEINLETS AND LENSES. ; REG.COM: NO BEDROCK SOURCE OF EITHER GOLD OR CASSITERITE HAS BEEN FOUND.

Economic information about the deposit and operations

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

Mining district

District name Melozitna

Comments on the workings information

  • MOST OF BENCH GROUND IS UNFROZEN AND ALL OF THE GRAVEL IN THE VALLEY BOTTOM IS UNFROZEN AND WET.

Comments on development

  • INTERMITTANT SMALL-SCALE MINING OR PROSPECTING BETWEEN 1908 AND 1932 REPORTED. MINING BY OPEN-CUT METHODS. EXPLORED BY SEVERAL PROSPECT PITS AND DRILL HOLES.

Reference information

Bibliographic references

  • Deposit

    USGS MF-396 (A-1), LOC. 4, 5.

  • Deposit

    USGS OF 239, P. 33-35

  • Deposit

    USGS OF 81-847 A, P. A8-9.

General comments

Subject category Comment text
Deposit GOLD AND CASSITERITE IN BASAL PART OF MAINLY UNFROZEN CREEK AND BENCH GRAVELS AND IN THE TOP FEW FEET OF BEDROCK. JUST BELOW THE MOUTH OF HENDERSON CREEK PLACERS APPEARED TO HAVE BEEN LIMITED TO THE PRESENT CREEK GRAVEL DEPOSITS, ALTHOUGH SOME BENCH GRAVELS PROBABLY WERE MINED. GOLD BEARING GRAVELS AT AN UNKNOWN SITE ABOUT 5 FEET THICK. GROUND SAID TO AVERAGE 12 TO 20 FEET IN DEPTH; INCLUDES BOTH MUCK OVERBURDEN AND GRAVEL.
Deposit THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.
Deposit STREAM GRADIENT APPROXIMATELY 75 FEET PER MILE IN AREA WORKED. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

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.