|Quadrangle map, 1:250,000-scale||VA|
|Quadrangle map, 1:63,360-scale||B-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Winkler and others (1981, locality 72 [OFR 80-892-B]) indicated placer prospecting for about 1.8 miles of lower Ernestine Creek between the elevations of 1,750 and 2,000 feet. The map site is the approximate midpoint of this placer prospect. It is in the SE1/4 section 20, T. 5 S., R. 2 E., of the Copper River Meridian.|
Geologic descriptionPlacer gold occurs in shallow gravels of Ernestine Creek (Rohn, 1900; Winkler and others, 1981 [OFR 80-892-B]). The deposits are probably on bedrock and similar to those on Fall Creek (VA073). Bedrock in vicinity of Ernestine Creek is greenschist-facies metaflysch of the Late Cretaceous Valdez Group (Winkler and others, 1981 [OFR 80-892-B]). Gold-bearing quartz veins are widespread through the Valdez Group in the southern Valdez quadrangle (Cobb and Matson, 1972).
|Geologic map unit||(-145.086685142831, 61.4160132831542)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Holocene.|
|Workings or exploration||Surface prospecting occurred along Fall Creek in about 1900 (Rohn, 1900).|
|Indication of production||None|
|Production notes||Possilby some minor production.|
Rohn, Oscar, 1900, A reconnaissance of the Chitina River and the Skolai Mountains, Alaska: U.S. Geological Survey 21st Annual Report, Part 2, p. 393-440.
Winkler, G.R., Miller, R.J., MacKevett, E.M., Jr., and Holloway, C.D., 1981, Map and summary table describing mineral deposits in the Valdez quadrangle, southern Alaska: U.S. Geological Survey Open-File Report 80-892-B, 2 sheets, scale l:250,000.
|Reporters||Travis L. Hudson|
|Last report date||12/14/2001|