|Quadrangle map, 1:250,000-scale||GU|
|Quadrangle map, 1:63,360-scale||D-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The location of the prospects is a very general one. The coordinates are arbitrarily located at the confluence of the two upper forks of Sinona Creek about 1.5 miles south-southwest of Sinona Lake. The only guide to the location is the statement of Mendenhall and Schrader (1903, p. 49) that 'some further locations have been made in the region between the Gakona and the Chistochina on Excelsior Creek and in the headwaters of the Shnu.' The Shnu is now named Sinona Creek.|
Geologic descriptionThere was some prospecting and possibly minor production of placer gold in the area prior to 1903 (Mendenhall and Schrader, 1903). Sinona Creek has a very low gradient and flows mostly through unconsolidated material. Its headwater tributaries originate the Chistochina gold district of the Mt. Hayes quadrangle and small amounts of flour gold could have washed into Sinona Creek and been concentrated in river bar deposits along the river.
|Geologic map unit||(-144.91221141474, 62.9395877447036)|
|Mineral deposit model||Placer Au, riverine subtype (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Holocene placer.|
|Workings or exploration||Probably shallow placer workings prior to 1903 that have long since destroyed by erosion.|
|Indication of production||Undetermined|
Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Gulkana quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1247, 36 p.
|Reporters||W.T. Ellis (Alaska Earth Sciences), C.C. Hawley (Hawley Resource Group), and W.J. Nokleberg (U.S. Geological Survey)|
|Last report date||12/7/2000|