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Ruby Creek Placer

Producer in Alaska, United States with commodities Gold, Silver, Bismuth
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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. Workings at the site
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10107548
MRDS ID A015225
Record type Site
Current site name Ruby Creek Placer
Related records 10209336

Geographic coordinates

Geographic coordinates: -150.15029, 65.40519 (WGS84)
Relative position ABOUT 8 MILES SOUTH OF RAMPART

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

Tanana SE(quadrangle 1:100,000 scale)

Tanana(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Baan-o-yeel kon Corporation(ANCSA Village)

ANCSA Village NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-371, LOC. 46. COORDINATES GIVEN FOR MINE MARKED ON TANANA (B-1), ABOUT 1/2 MILE UPSTREAM FROM CONFLUENCE WITH MINOOK 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
Silver Secondary
Bismuth Critical Tertiary

Materials information

Materials Type of material
Gold Ore
Garnet Gangue
Silver Unknown

Analytical data

Result GRADE: .67 GLM3 AU.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • 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 Metamorphic Rock > Gneiss
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Chert

Nearby scientific data

(1) -150.15029, 65.40519
ListMap

Economic information

Ore body information

  • Length 2413.95M
    Width 152.4M

Comments on the geologic information

  • BEDROCK STRIKES NORTH AND DIPS EAST. PYRITE DISSEMINATED IN CARBONACEOUS SLATE. BEDROCK HIGHLY METAMORPHOSED ; MAJOR.UNITS: BEDROCK IS PALEOZOIC SCHISTS (SOME GARNETIFEROUS), SLATE, CHERT, GRIT, AND INTRUSIVE GREENSTONE. ; REG.COM: PLACER GOLD DERIVED FROM LOCAL BEDROCK.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1901

Workings at the site

  • Type of workings Surface
    Area 29HA

Comments on development

  • SMALL SCALE INTERMITTENT MINING FROM 1901 TO AT LEAST 1975. HYDRAULIC PLANT OPERATED, 1906. MINED ALSO BY DRIFTING AND OPEN-CUT. MINED IN 1975 BY BULLDOZER.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit GOLD FOUND ON BEDROCK ACCROSS ENTIRE WIDTH OF GRAVEL. ALL PAY WITHIN 1.5 MILES OF MOUTH. 5-10 FT. OF GRAVEL OVERLAIN BY 1-4 FT. OF MUCK. PLACER SILVER NUGGETS FOUND.
Deposit STREAM GRADIENT ABOUT 125 FT. PER MILE. ; 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.