|Quadrangle map, 1:250,000-scale||NB|
|Quadrangle map, 1:63,360-scale||B-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on lower Boyden Creek. It is at an elevation of about 3,600 feet. 6,500 feet northwest of peak 5650. The occurrence is about 0.2 mile south of the center of section 7, T. 8 N., R. 13 E. of the Copper River Meridian. This is locality M1 of Lowe and others (1982), locality 9 of Richter and others (1975), and National Park Service locality WRST-9 (unpublished data). Cobb and Richter (1980) included this locality as an 'Unnamed occurrence'. It is located to within a few hundred feet.|
Geologic descriptionA quartz vein that contains pyrite and chalcopyrite is localized in a shear zone that cuts volcaniclastic rocks (Lowe and others, 1982). The shear zone is associated with a northwest-trending fault that cuts volcanic rocks of the upper Paleozoic Tetelna Volcanics. The fault cuts Tertiary basalt about 700 feet to the southeast of this occurrence (Lowe and others, 1982).
|Geologic map unit||(-143.074740474512, 62.4843296854304)|
|Mineral deposit model||Polymetallic vein (Cox and Singer, 1986; model 22c)|
|Mineral deposit model number||22c|
|Age of mineralization||Tertiary? The fault at this locality cuts Tertiary basalt about 700 feet to the southeast (Lowe and others, 1982).|
|Indication of production||None|
Additional commentsThe occurrence is in the Wrangell-St. Elias National Preserve.
Cobb, E.H., and Richter, D.H., 1980, Summaries of data on and list of references to metallic and selected nonmetallic mineral deposits in the Nabesna quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-927, 117 p.
|Reporters||Travis L. Hudson (Applied Geology)|
|Last report date||11/24/2002|