Cache Creek (Spruce Creek)

Mine, 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 C-5
Latitude 64.591
Longitude -164.149
Nearby scientific data Find additional scientific data near this location
Location and accuracy Cache Creek is labeled Spruce Creek on older maps. Its mouth is on Taylor Lagoon adjacent to Norton Sound, 8.3 miles east of Solomon. This is locality 105 (Spruce Creek) of Cobb (1972, MF 445; 1978, OF 78-181).

Geologic setting

Geologic description

About 8,000 feet of placer workings have been mapped along this drainage between elevations of about 45 and 130 feet. The workings start about 5,000 feet upstream from the mouth of the creek on Taylor Lagoon. Although prospected in the 1900s (Collier and others, 1908), principal mining was by dredging in the 1930s (Cobb, 1978). Some gravels were locally-derived schist and greenstone that was coarse and not well-rounded (Smith, 1910). The gravels were about 11 feet thick on bedrock and permafrost was locally encountered (Smith, 1933). Some beach gravel was encountered and mined but the location was not reported. The pay streak was reported to have been mined out (Smith, 1939). The elevation and location of this placer indicates that it was influenced by Quaternary sea level fluctuations. Bedrock in the area is part of a pelitic schist assemblage of possible Cambrian or Precambrian age (Till and others, 1986).
Geologic map unit (-164.151609777682, 64.5902588895608)
Mineral deposit model Placer Au-PGE (Cox and Singer, 1986; model 39a).
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration About 8,000 feet of placer workings have mapped along this drainage between elevations of about 45 and 130 feet. The workings start about 5,000 feet upstream from the mouth of the creek on Taylor Lagoon. Although prospected in the 1900s (Collier and others, 1908), principal mining was by dredging in the 1930s (Cobb, 1978).
Indication of production Yes; medium
Production notes The dredge operating on this creek was apparently the major producer in the area between 1932 and 1935; considering the extent of the workings the deposits may have been high grade. The paystreak was reported to have been mined out (Smith, 1939).

References