|Quadrangle map, 1:250,000-scale||MC|
|Quadrangle map, 1:63,360-scale||D-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is 1.2 miles south of Bow Pass. It is at an elevation of about 6,700 feet, about 5,000 feet northeast of elevation 8430 in the SW1/4 of section 20, T. 2 N., R. 18 E. of the Copper River Meridian. This is locality 189 of MacKevett (1976). The location is probably accurate to within 1,000 feet.|
Geologic descriptionThis occurrence consists of thin chalcocite- and bornite-bearing quartz veins that are localized along the contact of Tertiary felsite (MacKevett, 1976). A sample of the vein material contained 15 parts per million (ppm) silver and more than 20,000 ppm copper.
|Geologic map unit||(-142.163822582237, 61.9373151390321)|
|Mineral deposit model||Quartz veins with chalcocite and bornite|
|Age of mineralization||Tertiary based on the age of the felsite host rock.|
|Alteration of deposit||Silicification.|
|Workings or exploration||Only minor surface sampling.|
|Indication of production||None|
Additional commentsThe locality is in the Wrangell-Saint Elias National Park and Preserve.
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.
|Reporters||Travis L. Hudson (Applied Geology, Inc.)|
|Last report date||1/12/2003|