|Quadrangle map, 1:250,000-scale||BM|
|Quadrangle map, 1:63,360-scale||D-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||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.|
Geologic descriptionAt 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).
|Geologic map unit||(-161.77292452202, 67.8893666086573)|
|Mineral deposit model||Basaltic copper (Cox and Singer, 1986; model 23).|
|Mineral deposit model number||23|
|Age of mineralization||Jurassic?|
|Alteration of deposit||Iron-oxide staining.|
|Workings or exploration||Area was visited and sampled by the U.S. Geological Survey (Schmidt and Allegro, 1988).|
|Indication of production||None|
Additional commentsLocated in the Noatak Wilderness.
|Reporters||Anita Williams (Anchorage, AK)|
|Last report date||12/29/1999|