|Quadrangle map, 1:250,000-scale||MC|
|Quadrangle map, 1:63,360-scale||A-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is 1,500 feet southwest of the terminus of Ram Glacier. It is at an elevation of about 3,100 feet, near the center of the south boundary of section 12, T. 10 S., R. 22 E. of the Copper River Meridian. This is locality 1 of MacKevett (1976); the location is accurate to within about 500 feet.|
Geologic descriptionThis occurrence consists of networks of specular hematite veins in altered Pennsylvanian quartz monzonite (MacKevett, 1976). The quartz monzonite locally contains disseminated pyrite. It is part of a large and varied intrusive complex ranging from gabbro to granite that has K/Ar dates of 295 +/- 8 Ma and 209 +/- 9 Ma (MacKevett, 1978).
|Geologic map unit||(-141.430875608348, 61.006684696814)|
|Mineral deposit model||Network of hematite veins in quartz monzonite|
|Age of mineralization||Pennsylvanian or younger. The veins cut a pluton that has yielded K/Ar dates of 295 +/- 8 Ma and 209 +/- 9 Ma (MacKevett, 1978).|
|Workings or exploration||Limited surface examination.|
|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|