|Quadrangle map, 1:250,000-scale||ID|
|Quadrangle map, 1:63,360-scale||C-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Willow Creek placer prospect is on a south-facing slope about 2.0 miles southeast of VABM Willow at an elevation of from about 1,200 to 1,500 feet. An approximate location is in the SW1/4 SW1/4, section 4, T. 29 N., R. 42 W., of the Seward Meridian.|
Geologic descriptionAlluvial and residual placers on the hillside north of Willow creek are known from an elevation of about 1,200 to 1,500 feet where they were explored in 1958 (Don Harris, oral communication, 1983). No size or grade information is available. The prospect area is underlain by monzonite and the placer is possibly a residual placer over a lode deposit in the monzonite (Miller, Bundtzen, and Gray, 2005). Panned concentrates collected at the site contain gold, chromite, magnetite, and cinnabar (Bundtzen, Cox, and Veach, 1987; Bundtzen, Laird, and Lockwood, 1988).
|Geologic map unit||(-157.168838785968, 62.6246019535095)|
|Mineral deposit model||Placer Au deposit (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Probably Quaternary.|
|Workings or exploration||Alluvial and residual placers on the hillside north of Willow creek are known from an elevation of about 1,200 to 1,500 feet where they were explored in 1958 (Don Harris, oral communication, 1983). No size or grade information is available. Panned concentrates were collected in the 1980s by the Alaska Division of Geological and Geophysical Surveys and the U.S. Geological Survey (Bundtzen, Cox, and Veach, 1987; Bundtzen, Laird, and Lockwood, 1988; McGimsey and others, 1988).|
|Indication of production||Undetermined|
Bundtzen, T.K., Cox, B.C., and Veach, N.C., 1987, Heavy mineral provenance studies in the Iditarod and Innoko districts, western Alaska: Process Mineralogy VII, The Metallurgical Society, p. 221-246.
Bundtzen, T.K., Laird, G.M., and Lockwood, M.S., 1988, Geologic map of the Iditarod C-3 quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Professional Report 96, 13 p., 1 sheet, scale 1:63,360.
McGimsey, R.G., Miller, M.L., and Arbogast, B.F., 1988, Paper version of analytical results, and sample locality map for rock samples from the Iditarod quadrangle, Alaska: U.S. Geological Survey Open-File Report 88-421-A, 110 p., 1 sheet, scale 1:250,000.
|Reporters||T.K. Bundtzen (Pacific Rim Geological Consulting, Inc.), M.L. Miller (U.S. Geological Survey); and C.C. Hawley (Hawley Resource Group)|
|Last report date||5/19/2003|