Unnamed (east of Kivliktort Mountain)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; Pb; Zn
Other commodities Cd; Cu
Ore minerals galena; malachite; sphalerite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale HW
Quadrangle map, 1:63,360-scale B-1
Latitude 68.2576
Longitude -156.4527
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.

Geologic setting

Geologic description

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.

Production and reserves

Workings or exploration Only sampling and mapping by the U.S. Bureau of Mines.
Indication of production None
Reserve estimates None.
Production notes None.

Additional comments

MAS number 0020200014.

References