|Quadrangle map, 1:250,000-scale||MC|
|Quadrangle map, 1:63,360-scale||C-8|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is is on the lower east side of the terminus of the glacier at the head of Amy Creek. It is at an elevation of about 3,800 feet, 700 feet south-southeast of the center of section 7, T. 2 S., R. 9 T. of the Copper River Meridian. This is locality 163 of MacKevett (1976) and locality 10 of MacKevett and others (1978). The location is accurate to within about 100 feet. Cobb and MacKevett (1980) included this prospect under the name 'Amy Cr.'.|
Geologic descriptionThe deposit at this prospect consists of pyrite-bearing veins and altered zones that contain some secondary copper minerals cut Permian sedimentary rocks and Triassic gabbro (Moffit and Mertie, 1923; MacKevett, 1976). Samples of the mineralization contained up to 1.5 parts per million (ppm) silver and 2,000 ppm copper.
|Geologic map unit||(-143.845491784568, 61.7054399638233)|
|Mineral deposit model||Vein|
|Age of mineralization||Post-Triassic; some of the host rocks of the veins are Triassic in age.|
|Alteration of deposit||Oxidation.|
|Workings or exploration||Only limited surface sampling.|
|Indication of production||None|
Additional commentsThe locality is in the Wrangell-Saint Elias National Park and Preserve.
Cobb, E.H., and MacKevett, E.M., Jr., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the McCarthy quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-885, 156 p.
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|