|Quadrangle map, 1:250,000-scale||VA|
|Quadrangle map, 1:63,360-scale||C-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||More than 10 miles of the Mahlo River between about 1,950 and 3,600 feet elevation are shown by Winkler and others (1981 [OFR 80-892-B], locality 114) as a placer prospect. The map coordinates are the approximate midpoint of the placer prospect in the SW1/4 section 34, T. 3 S., R. 3 W., of the Copper River Meridian.|
Geologic descriptionMore than 10 miles of the Mahlo River were shown by Winkler and others (1981 [OFR 80-892-B], locality 114) as a placer gold prospect. Gold was reported to be present on Mahlo River as early as 1900 (Schrader, 1900, p. 422; Moffit, 1935, p. 36), and placer claims have been staked in this area (U.S. Bureau of Mines, 1980). Bedrock in the Mahlo River drainage includes metavolcanic and metasedimentary rocks of the McHugh Complex and metasedimentary rocks of the Valdez Group (Winkler and others, 1981 [OFR 80-892-A]). The Valdez Group hosts many gold-bearing quartz veins in the southern Valdez quadrangle.
|Geologic map unit||(-145.761136844981, 61.6499997418844)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Holocene.|
|Indication of production||None|
Moffit, F.H., 1935, Geology of the Tonsina district, Alaska: U.S. Geological Survey Bulletin 866, 38 p.
Schrader, F.C., 1900, A reconnaissance of a part of Prince William Sound and the Copper River district, Alaska, in 1898 in Walcott, C.D., 1900, Twentieth annual report of the United States Geological Survey, 1898-1899: Part VII - explorations in Alaska in 1898: U.S. Geological Survey Annual Report 20-VII, p. 341-423.
U.S. Bureau of Mines, 1980, Valdez 1:250,000 quadrangle map overlay showing mineral deposit locations, principal minerals, and number and type of claims: U.S. Bureau of Mines Open-File Report, August 1980.
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|