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Silverbow Basin Placers

Past Producer in Alaska, United States with commodity Gold
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Geologic information

Identification information

Deposit ID 10001303
MRDS ID A012041
Record type Site
Current site name Silverbow Basin Placers
Alternate or previous names Nowell Placer
Related records 10185837

Geographic coordinates

Geographic coordinates: -134.34423, 58.30947 (WGS84)
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • SITE OF OLD NOWELL LARGE-SCALE HYDRAULIC OPERATION; AT HEAD OF BEDROCK DRAINAGE TUNNEL 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

Materials information

Materials Type of material
Gold Ore

Analytical data

Result FINENESS: 772-827 3/4
Result AVERAGE 802-1/2
Result USGS OFR 60, P. 139-140

Nearby scientific data

(1) -134.34423, 58.30947
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Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1880
Year of first production 1881
Year of last production 1940

Mining district

District name Juneau/Gold Creek

Land status

Ownership category National Forest

Comments on the workings information

  • MINED BY WASHING GRAVELS FROM HYDRAULIC CUT DOWN A 3400 FT TUNNEL DRAINING THE BASIN; AU RECOVERED BY SLUICES IN THE TUNNEL

Comments on development

  • LARGE SCALE HYDRAULIC OPERATION 1881-1901; INTERMITTENT ACTIVITY THROUGH 1940

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012041

Bibliographic references

  • Deposit

    USGS 18TH ANNUAL REPORT, PART 3, P. 71-72

  • Deposit

    USGS BULL 287, P. 57-60

  • Deposit

    USGS OFR 60, P. 99, 139-140

  • Deposit

    USGS OFR 85-717, P. 177

  • Other Database

    BAG-OFR-85-717-164

General comments

Subject category Comment text
Deposit AURIFEROUS GRAVELS OVER 200 ACRES OF POST-GLACIAL LAKE BASIN; SOME RESIDUAL PLACERS
Deposit THE ONLY LARGE SCALE PROFITABLE PLACER OPERATION IN JUNEAU AREA ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1985 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey