Unnamed (near pass on upper Nutmoyuk Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Other commodities Ag; Au
Ore minerals malachite
Gangue minerals limonite; quartz

Geographic location

Quadrangle map, 1:250,000-scale BN
Quadrangle map, 1:63,360-scale B-1
Latitude 65.26
Longitude -162.38
Nearby scientific data Find additional scientific data near this location
Location and accuracy Nutmoyuk Creek is a west tributary to Timber Creek (BN084) and Timber Creek is a south tributary to Koyuk River. This approximate location is on the south side of the pass between upper Nutmoyuk Creek and a northeast headwater tributary to Tubutulik River. It is locality 43 of Gamble (1988).

Geologic setting

Geologic description

Locally dolomitic and silicified marble, is cut by quartz veinlets and some oxidized sulfide veinlets (Hudson and others, locality 179, p. 16). There is some minor malachite staining. Mining claims were located in this area in 1975.
Geologic map unit (-162.382632976934, 65.2593020512117)
Mineral deposit model Sulfide-bearing veinlets in marble
Age of mineralization Cretaceous ?; Epigenetic mineralization in metamorphic rocks of Seward Peninsula is primarily of Cretaceous age.
Alteration of deposit Silicification, quartz veining, and oxidation of sulfides is present.

Production and reserves

Workings or exploration The nature of any exploration work that may have taken place at this locality is not known.
Indication of production None

References