Sevenmile Beach

Mine, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale KR
Quadrangle map, 1:63,360-scale C-1
Latitude 57.65
Longitude -154.12
Nearby scientific data Find additional scientific data near this location
Location and accuracy This site is a beach located between VABM Rocky Point on the west and Uyak Bay on the east, a distance of approximately 4 1/2 miles (Cobb, 1972, MF 459, locality 4; Cobb, 1973, Bulletin 1374, figure 11, locality 3; MacKevett and Holloway, 1977, locality 4).

Geologic setting

Geologic description

Brooks (1912) first reported that a new beach placer had been found near Uyak in the summer of 1911. This is a broad sand and gravel beach, behind which are 60-foot bluffs of glacial gravel and till. Most of the gold was obtained over a distance of 3 3/4 miles, where the best pay occurred near the base of the bluffs on a clay layer which lay 1 to 6 feet below the surface. The pay streak was 12 to 16 inches thick and contained some nuggets valued up to $0.25 (gold price at $20.67). Sluice boxes and rockers were used in the mining and it was said that a person could recover up to $10 worth of gold per day. By 1912 the pay streak was apparently worked out. The immediate source of the gold is thought to be the glacial material eroded from the bluffs. Brooks (1918) reported that a sample collected here contained no detectable platinum.
Geologic map unit (-154.122312284831, 57.6492811710094)
Mineral deposit model Gold placer (Cox and Singer, 1986; model 39a).
Mineral deposit model number 39a
Age of mineralization Quaternary

Production and reserves

Workings or exploration The beach deposit was mined by portable sluice boxes and rockers with most of the production taking place in 1911 and 1912.
Indication of production Yes; small


MRDS Number A012462


Reporters S.H. Pilcher (Anchorage)
Last report date 9/8/1998