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Long Creek Placer

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. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10003021
MRDS ID A015535
Record type Site
Current site name Long Creek Placer
Related records 10233416

Geographic coordinates

Geographic coordinates: -155.52809, 64.38282 (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

Ruby B-6(quadrangle 1:63,360 scale)

Ruby S(quadrangle 1:100,000 scale)

Ruby(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

BLM(Federal land areas administered by BLM)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-405, LOC. 13. PLACER MINE MARKED ON RUBY (B-5, 6). COORDINATES GIVEN FOR PLACER MINE MARKED AT MOUTH OF SNOW GULCH. 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 AVERAGED 857 PARTS AU AND 135 PARTS AG.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
  • 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) -155.52809, 64.38282
ListMap

Economic information

Comments on the geologic information

  • VALLEY OF LONG CR. IS ASYMMETRIC, HAVING A FAIRLY STEEP SLOPE ON ITS WEST SIDE AND A GENTLE SLOPE ON ITS EAST SIDE; DEPTH OF VALLEY BELOW RIDGES ON BOTH SIDES ABOUT 1,000 FT. BEDROCK VALLEY FLOOR BELOW MOUTH OF BEAR GULCH NEARLY FLAT IN CROSS SECTION; SLOPES DOWNSTREAM MORE STEEPLY THAN PRESENT VALLEY. GRANITE IN DIVIDE BETWEEN LONG AND FLINT CREEK. AT TOWN OF LONG, STREAM CHANGES COURSE FROM S 60 E TO S 40 W. ; MAJOR.UNITS: BEDROCK MAINLY CHERTY SILICEOUS ROCK WITH TALCOSE LAYERS; SOME GREENSTONE; BEDROCK MUCH JOINTED. ; REG.COM: LODE SOURCE OF GOLD E AND SE OF CREEK. PAY STREAK ENRICHED BY ACCRETION OF GOLD FROM SMALL EASTERN TRIBUTARIES.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1910

Mining district

District name Ruby

Land status

Ownership category State

Ownership information

  • Type Operator
    Owner Albert Kongas
    Home office P.O. Box 1, Ruby, Ak. 99768
    First year 1975
  • Type Owner
    Owner Ruby Mining Co.

Comments on the workings information

  • SEVERAL SHAFTS SUNK TO BEDROCK FOR DRIFT MINING. SOME OF DEEPER GROUND NOT FROZEN, SO WATER IS A PROBLEM IN MINING.

Comments on development

  • GOLD DISCOVERED, 1910; ALMOST CONTINUOUS MINING (INCLUDING REWORKING OF OLD TAILINGS) THROUGH 1977. EARLY WORK ALL DRIFT MINING. ALL WORK SINCE 1940 OPEN-CUT MINING. MINED IN 1975 BY DRAGLINE AND BULLDOZER.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit STREAM GRADIENT UNDER 50 FT. PER MILE. CREEK NEARLY WORKED OUT; SOME PERIPHERAL PLACERS MAY REMAIN. ENTIRE CREEK PROBABLY HAS NOT BEEN THOROUGHLY PROSPECTED. ; 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.
Deposit GOLD FOUND IN BASE OF GRAVEL, ON BEDROCK, AND IN POCKETS OR CREVICES IN THE TOP 2-3 FT. OF DECOMPOSED BEDROCK. GOLD ALSO FOUND ON CLAY FALSE BEDROCK 2-3 FT. ABOVE THE TRUE BEDROCK; WHERE GOLD WAS FOUND ON SUCH CLAY BEDS LITTLE OR NO GOLD WAS FOUND ON THE TRUE BEDROCK BELOW. ALL GOLD IN BENCH PLACERS EAST OF CREEK ABOVE LONG AND SE OF CREEK BELOW LONG; NO RELATIONSHIP BETWEEN PAY STREAK AND PRESENT COURSE OF CREEK. PAY STREAK DISCONTINUOUS; PAY STREAK AT LEAST 6.5 MILES LONG AND 100 FT. WIDE; ALLUVIUM 20-80 FEET THICK. DEPTH TO BEDROCK NEAR MOUTH OF BEAR GULCH IS 40-50 FT.; PAY STREAK THOUGHT TO BE CONTINUOUS BELOW MOUTH AND DISCONTINUOUS ABOVE.

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.