Unnamed (in headwaters of Tukuto Creek) (ARDF #HW036) Pb, Zn

Unnamed (in headwaters of Tukuto Creek)

Occurrence, Probably inactive

Commodities and mineralogy

Main commodities	Pb; Zn
Ore minerals	galena; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale	HW
Quadrangle map, 1:63,360-scale	B-2
Latitude	68.3651
Longitude	-157.1652
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	There are some inconsistencies in the location given in Kurtak and others (1995) but this occurrence probably is about 0.8 mile northeast of hill 809 (in meters) in the headwaters of Tukuto Creek. This location is accurate to within a half mile and the occurrence is probably in the northwest quarter of section 12, T. 34 N., R. 7 E.

Geologic setting

Geologic description Kurtak and others (1995) briefly examined this site and collected a sample of iron-stained lithic tuff that contained 1,838 parts per million (ppm) zinc and 1,686 ppm lead. No ore minerals were visible in the sample but the values are distinctly anomalous and suggest a continuation of the mineralization they discovered several miles to the west (HW032 and HW033). Most of the rocks in the area are Lower Mississippian Kayak Shale.
Geologic map unit	(-157.16813890084, 68.3645848192982)
Mineral deposit model	Zinc and lead mineralization in lithic tuff.
Age of mineralization	Insufficient data.
Alteration of deposit	None noted.

Production and reserves

Workings or exploration	Only sampling by the U.S. Bureau of Mines.
Indication of production	None
Reserve estimates	None.
Production notes	None.
Additional comments MAS number 0020200034.

References

References Kurtak, J.M., Meyer, M.P., Hicks, R.W., Werdon, M.B., and Mull, C.G., 1995, Mineral investigations in the Colville Mining District and southern National Petroleum Reserve in Alaska: U.S. Bureau of Mines Open-File Report 8-95, 217 p., 1 sheet, scale 1:250,000.
Reporters	D.J. Grybeck (Contractor, U.S. Geological Survey)
Last report date	4/18/2010