Beaver Creek Prospect

The Beaver Creek Prospect is a silver and lead mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Beaver Creek Prospect

Commodity

Primary: Silver
Primary: Lead
Tertiary: Gold
Tertiary: Copper
Tertiary: Zinc

Location

State: Alaska
District: Ruby

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1920
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Form: LENTICULAR

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Argentiferous Galena Much Altered To Cerussite; Fe Altered To Limonite.

Rocks

Not available

Analytical Data

Analytical Data: 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.

Materials

Ore: Malachite
Gangue: Limonite
Gangue: Goethite
Gangue: Rhodochrosite
Gangue: Pyrite
Gangue: Anglesite

Comments

Comment (Deposit): THIS SITE NAME WAS CREATED BY THE REPORTER OR OTHER USGS EMPLOYEE BASED ON PROXIMITY TO SOME MAJOR GEOGRAPHIC FEATURE.

Comment (Geology): 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.

Comment (Deposit): THE CHANCE OF DEVELOPING ANY SIGNIFICANT TONAGE OF ORE SEEMS SLIGHT. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Location): 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).

Comment (Development): DISCOVERED AND EXPLORED IN 1920; NO PRODUCTION. EXPLORED IN 1960 BY THE U.S.B.M.

Comment (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.

Comment (Workings): 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.

References

Reference (Deposit): USGS MF-405 (C-5), LOC. 1

Reference (Deposit): USGS BULL. 783, P. 145-150.

Reference (Deposit): USBM OF 39, P. 1-28.

Reference (Deposit): USGS OF 77-168D, P. 84, LOC. 6.

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