Timber Creek Prospect, Koyuk Mining District, Nome Census Area, Alaska, USAi

Regional Level Types
Timber Creek Prospect	Prospect
Koyuk Mining District	Mining District
Nome Census Area	Census Area
Alaska	State
USA	Country

Location: This occurrence is very approximately located (probably within 2 miles) in the headwaters of Timber Creek, a south tributary to Koyuk River. The confluence of Timber Creek and its west tributary Nutmoyuk Creek (as shown on the Bendeleben B-1 quadrangle) is about 3 miles downstream of this location (the 1:250,000 Bendeleben quadrangle shows Timber Creek to be a tributary of Nutmoyuk Creek). This is locality 18 of Cobb (1972; MF 417; 1975; OFR 75-429).
Geology: Copper-stained greenstone near a contact with limestone was apparently discovered and initially explored in 1906-1907 (Smith and Eakin, 1911). Shallow prospect pits were dug and some high-grade samples were taken that supposedly contained 17 to 70 ounces/ton Ag and about 0.05 ounces/ton Au. The location of this occurrence is uncertain but mafic metavolcanic rocks and Devonian marble are mapped in the headwaters of Timber Creek (Till and others, 1986).
Workings: Shallow prospect pits were apparently dug when the occurrence was first discovered.
Age: If epigenetic, probably Cretaceous or younger.
Alteration: Oxidation is well-developed.

Commodities (Major) - Ag, Au, Cu
Development Status: No
Deposit Model: Copper-bearing greenstone

Other Databases

Link to USGS - Alaska:	BN084

Other Regions, Features and Areas containing this locality

References