Silverbow Basin Placers

The Silverbow Basin Placers is a gold 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

Satelite View

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: Silverbow Basin Placers
Secondary: Nowell Placer

Commodity

Primary: Gold

Location

State: Alaska
District: Juneau/Gold Creek

Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1881
Year Last Production: 1940
Discovery Year: 1880
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

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

Materials

Ore: Gold

Comments

Comment (Development): LARGE SCALE HYDRAULIC OPERATION 1881-1901; INTERMITTENT ACTIVITY THROUGH 1940

Comment (Location): 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).

Comment (Deposit): AURIFEROUS GRAVELS OVER 200 ACRES OF POST-GLACIAL LAKE BASIN; SOME RESIDUAL PLACERS

Comment (Workings): MINED BY WASHING GRAVELS FROM HYDRAULIC CUT DOWN A 3400 FT TUNNEL DRAINING THE BASIN; AU RECOVERED BY SLUICES IN THE TUNNEL

Comment (Deposit): THE ONLY LARGE SCALE PROFITABLE PLACER OPERATION IN JUNEAU AREA ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

References

Reference (Deposit): USGS 18TH ANNUAL REPORT, PART 3, P. 71-72

Reference (Deposit): USGS BULL 287, P. 57-60

Reference (Deposit): USGS OFR 60, P. 99, 139-140

Reference (Deposit): USGS OFR 85-717, P. 177

Reference (Other Database): BAG-OFR-85-717-164

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