|Quadrangle map, 1:250,000-scale||PE|
|Quadrangle map, 1:63,360-scale||C-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||These occurrences are on the South Fork of Andrew Creek at an elevation of about 1000 feet. They are about 12.6 miles east-northeast of Wrangell near the center of section 23, T. 61 S., R. 85 E.|
Geologic descriptionDuring a reconnaissance examination of Andrew Creek, Still and others (2002) found a piece of quartz float with visible gold in the South Fork of Andrew Creek at an elevation of about 1,000 feet. They could not locate the lode source but several other samples of quartz float in the creek contained 137 to 1,992 parts per billion (ppb) gold. They also collected 21 stream-sediment sample and a panned concentrate. The stream sediment samples contained up to 493 ppb gold and the panned concentrate sample contained 1,058 ppb gold. Andrew Creek largely flows on Mesozoic and Paleozoic schist and gneiss that is intruded by Cretaceous tonalite plutons (Brew, 1997; Karl and others, 1999) . These make up the western border zone of the Coast Plutonic Complex. East of Andrew Creek the complex consists largely of Tertiary tonalite and migmatite. (Brew, 1997; Karl and others, 1999).
|Geologic map unit||(-132.106082720876, 56.5682655578741)|
|Mineral deposit model||Visible gold in quartz float.|
|Age of mineralization||Uncertain because the mineralization was not found in place.|
|Workings or exploration||Only sampling by government engineers and geologists.|
|Indication of production||None|
Additional commentsThe area is now within the Stikine-LeConte Wilderness which is closed to mineral exploration and mining.
Brew, D.A., 1997, Reconnaissance geologic map of the Petersburg C-1 quadrangle, southeastern Alaska: U.S. Geological Survey Open-File Report 97-156-H, 23 p., 1 sheet, scale 1:63,360.
Karl, S.W., Haeussler, P.J., and McCafferty, A.E., 1999, Reconnaissance geologic map of the Duncan Canal-Zarembo Island area, southeastern Alaska: U.S. Geological Survey Open-File Report 99-0168, 30 p., 1 sheet, scale 1:150,000.
Still, J.C., Bittenbender, P.E., Bean, K.W., and Gensler, E.G., 2002, Mineral assessment of the Stikine area, central Southeast Alaska: U.S. Bureau of Land Management Technical Report 51, 560 p.
|Reporters||D.J. Grybeck (Port Ludlow, WA)|
|Last report date||4/8/2007|