Lightning Creek

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale SO
Quadrangle map, 1:63,360-scale D-5
Latitude 64.871
Longitude -164.229
Nearby scientific data Find additional scientific data near this location
Location and accuracy Lightning Creek is a small south tributary to the Casadepaga River. Its mouth is about 2.5 miles upstream from the mouth of Big Four Creek. This is locality 62 of Cobb (1972, MF 445; 1978, OF 78-181).

Geologic setting

Geologic description

Smith (1910) noted that considerable prospecting had occurred by 1907 along the active drainage of lower Lightning Creek where it crosses terraces of the Casadepaga River. The terrace gravels here are 5 to 10 feet above the active stream. Bedrock in the area is primarily part of a lower Paleozoic metasedimentary assemblage (Till and others, 1986).
Geologic map unit (-164.231618363494, 64.8702608674578)
Mineral deposit model Placer Au-PGE (Cox and Singer, 1986; model 39a).
Mineral deposit model number 39a
Age of mineralization Quaternary; the numerous incised terraces along the Casadepaga River indicate that more than one cycle of erosion and deposition has developed placer deposits in the area. The low elevations between 170 and 270 feet along the first 11 miles of the river, suggest that Quaternary sea level fluctuations could have influenced placer development.

Production and reserves

Workings or exploration Surface prospecting pits were dug along the active stream in about 1907.
Indication of production Undetermined

References