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  3. Mineral Resource Data System (MRDS)

Tamarack Creek Placer

Past Producer in Alaska, United States with commodities Gold, Silver, 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. Land status
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10003033
MRDS ID A015552
Record type Site
Current site name Tamarack Creek Placer
Related records 10184565

Geographic coordinates

Geographic coordinates: -155.40306, 64.13282 (WGS84)
Location accuracy 250(meters)

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 A-5(quadrangle 1:63,360 scale)

Ruby S(quadrangle 1:100,000 scale)

Ruby(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-405, LOC. 29. PLACER GROUND FROM APPROXIMATELY 1 MILE ABOVE MOUTH UPSTREAM FOR 3 MILES. COORDINATES GIVEN FOR CENTER OF MINED GROUND. 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
Silver Secondary
Tin Critical Tertiary

Materials information

Materials Type of material
Cassiterite Ore
Gold Ore

Analytical data

Result FINENESS 871 AU AND 124 AG. GROUND WORKED YIELDED $.75 TO $2.50 PER FT2 OF BEDROCK (AU AT $20.67 OZ).

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -155.40306, 64.13282
ListMap

Economic information

Comments on the geologic information

  • CREEK APPARENTLY ON THE EAST EDGE OF MINERALIZED ZONE THAT EXTENDS SOUTHWESTWARD THROUGH DUNCAN AND FLAT CREEKS. ; MAJOR.UNITS: BEDROCK IS DARK, MICACEOUS CRENULATED SLATE-PHYLLITE WITH PYRITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1912

Mining district

District name Ruby

Land status

Ownership category State

Comments on the workings information

  • A NUMBER OF SHAFTS WERE SUNK TO BEDROCK FOR DRIFT MINING. A NUMBER OF HOLES WERE ALSO SUNK FOR PROSPECTING.

Comments on development

  • STAKED IN 1912, ACTIVELY PROSPECTED IN 1913. MINED 1912-1920'S AND 1933 TO ABOUT 1940. MINING BY DRIFTING. DURING THE SUMMER OF 1915 FOUR PLANTS OPERATED. CREEK LONG INACTIVE IN 1975.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit GOLD IN THE UPPER FOOT OF SOFT BEDROCK AND IN THE LOWER 3 FEET OF GRAVEL, ON WHAT APPEARS TO BE THE RIM OF AN OLD CHANNEL. GROUND AVERAGED 60 FT. IN DEPTH THROUGHOUT PART OF CREEK WORKED. THE BOTTOM LAYER CONSISTED OF 1-5 FT. OF "SOFT" BEDROCK OVERLAIN BY 3-8 FT. OF GRAVEL; THE REST IS MUCK. CREEK MINED OVER A LENGTH OF 3 MILES. SOME CASSITERITE WITH GOLD.
Deposit STREAM GRADIENT APPROXIMATELY 50 FEET PER MILE IN AREA MINED. ; 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.