Kivivik Occurrence, Noatak Mining District, Northwest Arctic Borough, Alaska, USAi

Regional Level Types
Kivivik Occurrence	Occurrence
Noatak Mining District	Mining District
Northwest Arctic Borough	Borough
Alaska	State
USA	Country

Located in the Noatak Wilderness.
Location: This occurrences is at an elevation of about 600 feet, adjacent to Kivivik Creek about 5 miles above its confluence with the Noatak River. It is in section 24, T. 29 N., R. 14 W., of the Kateel River Meridian. Schmidt and Allegro (1988), location 4; field stations 84JS026A-D and 84PF070R.
Geology: At the occurrence, basalts of probable Jurassic age contain both disseminated chalcopyrite and pyrite, and pyrite and epidote in vesicles. A 30- by 40-meter area of red-orange-stained, pillow basalt contains pyrite, minor chalcopyrite and ochre. Magnetite occurs in the sediment of the stream draining this occurrence. A sample of pyrite contained 120 ppm Zn, 1 ppm Ag, 50 ppm Co, 300 ppm Cu, and 1000 ppm Mn. A sample from a heavily stained area contained 150 ppm Cu and 1000 ppm Mn. An ochre sample contained 110 ppm Zn and 200 ppm Cu. A sample of pyrite and epidote in vesicles contained 20 ppm As, 0.5 ppm Ag, and 1500 ppm Mn. A sample of chalcopyrite and pyrite in basalt contained 2 ppm Ag, 50 ppm Co and 500 ppm Cu (Schmidt and Allegro, 1988).
Workings: Area was visited and sampled by the U.S. Geological Survey (Schmidt and Allegro, 1988).
Age: Jurassic?
Alteration: Iron-oxide staining.

Commodities (Major) - Cu; (Minor) - Ag, Co, Mn, Zn
Development Status: None
Deposit Model: Basaltic copper (Cox and Singer, 1986; model 23).

Other Databases

Link to USGS - Alaska:	BM020

Other Regions, Features and Areas containing this locality

References