Unnamed (head of valley of Amy Creek) (ARDF #MC036) Ag, Au, Cu

Unnamed (head of valley of Amy Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities	Ag; Au; Cu

Geographic location

Quadrangle map, 1:250,000-scale	MC
Quadrangle map, 1:63,360-scale	C-8
Latitude	61.6896
Longitude	-143.8725
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This occurrence is on the ridge crest at the head of the valley of Amy Creek. It is at an elevation of about 6,950 feet, 1,800 feet south-southeast of the center of section 13, T. 2 S., R. 8 E. of the Copper River Meridian. This is locality 166 of MacKevett (1976) and locality 14 of MacKevett and others (1978). The location is accurate to within about 100 feet.

Geologic setting

Geologic description This occurrence consists of a 3-meter-wide altered fault zone that cuts Triassic Nikolai Greenstone (MacKevett, 1976). A sample of the altered material contained 0.2 part per million (ppm) gold, 1.5 ppm silver, and 7,000 ppm copper.
Geologic map unit	(-143.874590976964, 61.689138112168)
Mineral deposit model	Vein?
Age of mineralization	Triassic or younger based on the age of the host rock.
Alteration of deposit	Oxidation?

Production and reserves

Workings or exploration	Only limited surface sampling.
Indication of production	None
Additional comments The locality is in the Wrangell-Saint Elias National Park and Preserve.

References

References MacKevett, E.M., Jr., 1976, Mineral deposits and occurrences in the McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-773-B, 2 sheets, scale 1:250,000. MacKevett, E.M., Jr., Smith, J.G., Jones, D.L., and Winkler, G.R., 1978, Geologic map of the McCarthy C-8 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-1418, 1 sheet, scale 1:63,360.
Reporters	Travis L. Hudson (Applied Geology, Inc.)
Last report date	1/12/2003