|Quadrangle map, 1:250,000-scale||HW|
|Quadrangle map, 1:63,360-scale||B-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is about 2.4 miles east-southeast of the summit of Kivliktort Mountain in the headwaters of a small unnamed stream; it is about 0.1 mile southwest of the center of section 13, T. 33 N., R. 10 E.|
The rocks in the area are Upper Devonian to Lower Mississippian, Noatak Sandstone overlain by Kanayut Conglomerate. The rocks are thrust faulted and some of the mineralization is along a thrust surface.Float of mineralized, brecciated, quartz-cemented sandstone occurs along a small creek (Kurtak and others, 1995). A sample contained 19.6 percent zinc, 1,062 parts per million (ppm) cadmium, and 394 ppm copper. At an elevation of about 800 meters along the creek, quartz-cemented sandstone rubble over an area about 5 meters by 15 meters contained up to 4.3 percent lead and 82.6 ounces of silver per ton. A rubble sample of iron-stained conglomerate at the head of the creek contained 0.4 percent zinc.
|Geologic map unit||(-156.455604779892, 68.257094951224)|
|Mineral deposit model||Sandstone lead-zinc deposit?|
|Age of mineralization||Late Devonian or younger based on the age of the host rock; possibly Mississippian by analogy with other lead-zinc deposits in the western Brooks Range.|
|Alteration of deposit||Probably some silicification in addition to quartz veining.|
|Workings or exploration||Only sampling and mapping by the U.S. Bureau of Mines.|
|Indication of production||None|
Additional commentsMAS number 0020200014.
Jansons, Uldis, 1982, Zinc-lead occurrences in and near the National Petroleum Reserve in Alaska: U.S. Bureau of Mines Mineral Land Assessment 121-82, 55 p.
Jansons, Uldis, and Parke, M.A., 1981, 1978 mineral investigations in the Misheguk Mountain and Howard Pass quadrangles: U.S. Bureau of Mines Open-File Report 26-81, 195 p., 1 sheet.
|Reporters||J.H. Dover (U.S. Geological Survey); D.J. Grybeck (Contractor, U.S. Geological Survey)|
|Last report date||4/18/2010|