|Quadrangle map, 1:250,000-scale||NB|
|Quadrangle map, 1:63,360-scale||C-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This placer prospect is in the valley of an unnamed, east headwater tributary to Trail Creek. It is at an elevation of about 4,800 feet, 6,000 feet northwest of peak 7080, and 5,000 feet southwest of elevation 6285. The prospect is about 0.4 mile west of the center of section 30, T. 10 N., R. 12 E. of the Copper River Meridian. This is locality 3 of Richter and Schmoll (1973), locality 61 of Richter and others (1975), and National Park Service locality WRST-7 (unpublished data). This prospect was included by Cobb and Richter (1980) under the name 'Trail Cr.'. It is located to within a few hundred feet.|
Geologic descriptionPlacer gold claims were staked at this locality in 1931 and subsequently prospected without encouraging results (Moffit, 1943). Some surface placer workings are present (Richter and others, 1975). Bedrock in this tributary to Trail Creek includes abundant Upper Jurassic argillite in its headwaters and Triassic limestone and greenstone downstream. Fine-grained dioritic dikes and irregular intrusions are widespread in the bedrock of this drainage (Richter and Schmoll, 1973 ).
|Geologic map unit||(-143.243551443966, 62.6170350819019)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Some surface placer workings are present (Richter and others, 1975).|
|Indication of production||Undetermined|
Additional commentsThe prospect 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.
Moffit, F.H., and Wayland, R.G., 1943, Geology of the Nutzotin Mountains, Alaska, with a section on The igneous rocks: U.S. Geological Survey Bulletin 933-B, p. 103-199.
Richter, D.H., and Schmoll, H.R., 1973, Geologic map of the Nabesna C-5 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-1062, 1 sheet, scale 1:63,360.
|Reporters||Travis L. Hudson (Applied Geology)|
|Last report date||11/24/2002|