Sourdough Creek

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale NM
Quadrangle map, 1:63,360-scale D-4
Latitude 64.9843
Longitude -166.6175
Nearby scientific data Find additional scientific data near this location
Location and accuracy Sourdough Creek flows across the coastal plain about 2 to 3 miles east of Cape Douglas and enters a coastal lagoon about 6 miles southeast of Cape Douglas. Collier and others (1908, plate X) show the creek as auriferous over a 4- to 5-mile length in the Teller A-4 and Nome D-4 quadrangles. The location given is the approximate mid-point of the auriferous section in the Nome D-4 quadrangle. The creek has very little relief, and it is difficult to identify the exact location from the generalized map of Collier and others (1908).

Geologic setting

Geologic description

Collier and others (1908, plate X) describe Sourdough Creek as possibly auriferous over a 4- to 5-mile length on the Teller A-4 and Nome D-4 quadrangles. Collier panned one gold color on Sourdough Creek in 1901 (Collier and others, 1908, p. 220). In part on the basis of its location near the coastal plain and the stream's low relief, it is inferred that placer gold deposits would be of river-bar type with local enrichment in point bars and in inner curves of meanders, probably in association with black or ruby sand. Sourdough Creek probably reworks coastal plain deposits over its lower course, but its headwaters are in uplands underlain by a pelitic schist assemblage (Sainsbury, Hummel and Hudson, 1972).
Geologic map unit (-166.620154972927, 64.9835183208874)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a).
Mineral deposit model number 39a
Age of mineralization Holocene.

Production and reserves

Workings or exploration Probably some exploration by pan or rocker before WWI.
Indication of production None