|Quadrangle map, 1:250,000-scale||MC|
|Quadrangle map, 1:63,360-scale||A-7|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is on west valley wall of the small hanging glacier above the head of Pocket Creek, a west tributary to Monahan Creek. It is at an elevation of about 6,300 feet, 2,000 feet north of peak 7020. The site is near the northwest corner of section 1, T. 10 S., R. 11 E. of the Copper River Meridian. This is locality 10 of MacKevett (1976); the location is probably accurate to within 1,000 feet. Cobb and MacKevett (1980) included this prospect under the name 'Nelson'.|
Geologic descriptionAt this prospect, five gold-bearing quartz veins to 16 inches thick cut Cretaceous Valdez Group metaflysch. The veins carry spotty gold values and are associated with three north-trending felsic dikes (Moffit, 1937). The deposits are on a steep slope but some trenches or prospecting pits are probably present. Gold-bearing quartz veins in the Valdez Group are generally Early Tertiary in age (Goldfarb and others, 1997).
|Geologic map unit||(-143.387737921903, 61.0355427378702)|
|Mineral deposit model||Low sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)|
|Mineral deposit model number||36a|
|Age of mineralization||Gold-bearing quartz veins in the Valdez Group are generally Early Tertiary in age (Goldfarb and others, 1997).|
|Alteration of deposit||Silicification.|
|Workings or exploration||The deposits are on a steep slope but some trenches or prospecting pits are probably present.|
|Indication of production||None|
Additional commentsThe locality is in the Wrangell-Saint Elias National Park and Preserve.
Cobb, E.H., and MacKevett, E.M., Jr., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the McCarthy quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-885, 156 p.
Goldfarb, R.J., Miller, L.D., Leach, D.L., and Snee, L.W, 1997, Gold deposits in metamorphic rocks in Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska: Economic Geology Monograph 9, p. 151-190.
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|