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Beaver Creek Prospect

Occurrence in Alaska, United States with commodities Silver, Lead, Gold, Copper, Zinc
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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. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10003010
MRDS ID A015523
Record type Site
Current site name Beaver Creek Prospect
Related records 10160092

Geographic coordinates

Geographic coordinates: -154.39197, 64.58841 (WGS84)
Location accuracy 250(meters)
Relative position 14 MILES SOUTH OF RUBY

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 C-3(quadrangle 1:63,360 scale)

Ruby N(quadrangle 1:100,000 scale)

Ruby C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Alaska(hydrologic region)

Federal lands

Nowitna National Wildlife Refuge(National Wildlife Refuge)

National Wildlife Refuge FWS(Type of land area)

FWS(Federal land areas administered by FWS)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • USGS MF-405, LOC. 1. DEPOSITS AT THE BASE OF THE NORTH VALLEY WALL OF BEAVER CR. ABOUT 1.5 MI. EAST OF THE RUBY-POORMAN ROAD AND MIDWAY BETWEEN THIRTEEN MILE CR. AND LITTLE JOE CR. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Silver Primary
Lead Primary
Gold Tertiary
Copper Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Malachite Ore
Anglesite Gangue
Goethite Gangue
Limonite Gangue
Pyrite Gangue
Rhodochrosite Gangue

Alteration

  • (Local) Argentiferous Galena Much Altered To Cerussite; Fe Altered To Limonite.

Analytical data

Result ASSAYS OR ANALYSES OF 1.47 TO 82 OZ. AG PER TON, 8.7%-15.3% PB, .08%-.89% ZN, .02% CU, AND TRACES OF GOLD REPORTED. EU LOW (MAXIMUM OF .003%). 41 CHANNEL SAMPLES WERE CUT FROM THE GOSSAN.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -154.39197, 64.58841
ListMap

Economic information

Ore body information

  • General form LENTICULAR
    Strike N 35 E
    Dip STEEPLY NW

Comments on the geologic information

  • BOTH PREMINERALIZATION AND POSTMINERALIZATION FAULTS APPROXIMATELY PARALLEL TO BEDDING AND SCHISTOSITY OF COUNTRY ROCK (INTENSELY JOINTED AND FRACTURED SCHIST AND PHYLLITE CONTAINING SILICEOUS AND CALCAREOUS BANDS); DEPOSITS, SOME OF FAULTS, BEDDING AND SCHISTOSITY ALL STRIKE ABOUT N 35 E AND DIP STEEPLY NW. SOME OF LATER FAULTS ARE TRANSVERSE AND DISRUPT CONTINUITY OF EAST GOSSAN ZONE. EAST ZONE IS 500 FT. LONG AND .5 TO 6 FEET WIDE. WEST ZONE IS 300 FT. LONG AND 3-10 FT. WIDE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1920

Mining district

District name Ruby

Comments on the workings information

  • WORKINGS INCLUDED A 40 FT. SHAFT, 2 SHALLOW SHAFTS, AND AN ADIT AND DRIFT. ABOUT 3,100 LINEAR FT. OF TRENCHES WERE EXCAVATED FROM 11 TRENCHING SITES IN 1960.

Comments on development

  • DISCOVERED AND EXPLORED IN 1920; NO PRODUCTION. EXPLORED IN 1960 BY THE U.S.B.M.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit LENTICULAR VEINS OF ARGENTIFEROUS GALENA WITH VARIOUS AMOUNTS OF CERUSSITE, ANGLESITE, RHODOCHROSITE, MANGANESE OXIDES, GOLD, PYRITE, RUBY SILVER, MALACHITE, AND OZURITE; NO ZINC MINERAL IDENTIFIED, BUT ZN SHOWED UP IN ANALYSES. VEINS ATTAIN A MAXIMUM THICKNESS OF SEVERAL FEET AND FOLLOW THE CLEAVAGE OF MICA SCHIST COUNTRY ROCKS. IRON-RICH GOSSAN. GOSSAN DEPOSITS ARE IRREGULAR TABULAR BODIES IN 2 ZONES 800 FT. APART, A FEW HUNDRED FEET LONG, MAXIMUM WIDTHS OF 6 TO 10 FT; LIMITED TO SHALLOW DEPTHS. GOSSANS ARE COMPOSED MAINLY OF LIMONITE AND GOETHITE WITH INCLUSIONS OF GALENA, QUARTZ, ANGLESITE, CERUSITE, AND SCHIST COUNTRY ROCK.
Deposit THE CHANCE OF DEVELOPING ANY SIGNIFICANT TONAGE OF ORE SEEMS SLIGHT. ; 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
Editor 20-SEP-1994 Mosier, Dan U.S. Geological Survey PARSED OUT HOST ROCK AND ASSOCIATED ROCK TYPES, AGES, UNIT NAMES, AND UNIT AGES.

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.