Nelson Creek Occurrence, Fairhaven Mining District, Northwest Arctic Borough, Alaska, USAi

Regional Level Types
Nelson Creek Occurrence	Occurrence
Fairhaven Mining District	Mining District
Northwest Arctic Borough	Borough
Alaska	State
USA	Country

Location: Nelson Creek is a small north tributary to Old Glory Creek; the mouth of Nelson Creek is 6,500 feet upstream of the confluence of Old Glory Creek and American Creek. Old Glory Creek is a southwest tributary to Pinnell River. This is part of locality 72 of Cobb (1972; MF 417; 1975; OFR 75-429).
Geology: An abandoned placer cut on a north bench just above the mouth of Nelson Creek exposes schist bedrock containing quartz segregations and boudins. A sample of boudined quartz and some enclosing schist assayed 0.02 ounces/ton Au, 0.10 ounces/ton Ag, 0.05 % Cu, 0.05 % Pb, and 0.05 % Zn (Herried, 1966, Table 1). Herried (1966) also reported this analytical result as $0.70 per ton gold (not 0.70 ounces/ton Au as restated by Cobb, 1975, and Hudson and others, 1977). The bedrock here is locally bleached and cut by a clay altered zone. Bedrock of the area is a metasedimentary schist and marble sequence of Lower Paleozoic age (Till and others, 1986).
Workings: An abandoned placer cut on a north bench just above the mouth of Nelson Creek exposes schist bedrock containing quartz segregations and boudins.
Age: Epigenetic mineralization in metamorphic rocks of Seward Peninsula is primarily of Cretaceous age. Some lode gold deposits on southern Seward Peninsula are mid-Cretaceous in age (see Midnight Mountain, BN047).
Alteration: Schist is bleached locally and crosscut by a zone of clay alteration.

Commodities (Major) - Au; (Minor) - Ag
Development Status: No
Deposit Model: Quartz veins and segregations in metasedimentary rocks.

Other Databases

Link to USGS - Alaska:	BN059

Other Regions, Features and Areas containing this locality

References