White River

Mine, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale BG
Quadrangle map, 1:63,360-scale A-4
Latitude 60.0721
Longitude -142.1798
Nearby scientific data Find additional scientific data near this location
Location and accuracy Placer gold mining occurred locally along a 2-mile segment of White River starting about 2 miles upstream of the mouth. The map site is at the approximate midpoint of this segment at an elevation of about 75 feet in the N1/2 section 28, T 21 S, R 19 E, of the Copper River Meridian. This is locality 4 of Cobb (1972 [MF 373]; 1979 [OF 79-1246]). The location is probably accurate to within 1 mile.

Geologic setting

Geologic description

Placer gold occurs in glaciofluvial bench deposits along this part of White River. The gold is mostly fine, light, and flaky, but some small nuggets that weighed as much as 0.15 ounce were also recovered (Maddren, 1914). The deposits are 15 to 40 feet above the river, 8 or more feet thick, and as much as 500 feet wide (Brooks, 1912; Maddren, 1914). Hydraulic mining took place as early as 1908 and continued in most years up to 1916 (Maddren, 1914; Cobb, 1979 [OF 79-1246]). A 9,000-foot-long flume was constructed in 1913 to enable larger scale hydraulic operations. The present river also contains placer gold, but it was not accessible to mining. The gold may be derived from reworking of marine-glacial deposits of the Cenozoic Yakataga Formation (Reimnitz and Plafker, 1976). The White River placers produced a small part of the 15,000 to 16,000 ounces of gold estimated to have been recovered in the Yakataga district (Cobb, 1979 [OF 79-1246]). Bedrock in the White River drainage is Tertiary sedimentary rocks (Miller, 1971).
Geologic map unit (-142.181610627478, 60.0716338702242)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration Hydraulic mining took place as early as 1908 and continued in most years up to 1916 (Maddren, 1914; Cobb, 1979 [OF 79-1246]). A 9,000-foot-long flume was constructed in 1913 to enable larger scale hydraulic operations.
Indication of production Yes; small
Production notes The White River placers produced a small part of the 15,000 to 16,000 ounces of gold estimated to have been recovered in the Yakataga district (Cobb, 1979 [OF 79-1246]).

References