|Quadrangle map, 1:250,000-scale||SO|
|Quadrangle map, 1:63,360-scale||D-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Aggie Creek is a south tributary to Fish River. Open-cut placer workings from hydraulic operations and some dredging, are present about 12 miles east of Council. These workings are between elevations of about 40 and 140 feet on the main channel and extend a distance of 1.7 miles starting 0.3 miles upstream from the mouth of Aggie Creek. This is locality 125 of Cobb (1972, MF 445; 1978, OF 78-181).|
Geologic descriptionOpen-cut placer workings, from hydraulic operations and some dredging, are present on the main channel over a distance of 1.7 miles starting 0.3 miles upstream of the mouth of Aggie Creek. These workings are between elevations of about 40 and 140 feet. Bedrock of the Aggie Creek drainage is schistose Ordovician chlorite marble (Till and others, 1986). Miller and Grybeck (1973) note that quartz latite porphyry intrusives, like those present to the east, could be present in the Aggie Creek drainage and may be gold-bearing as at ARDF locality SO147. Copper concentrations in stream sediment samples are slightly elevated throughout the Aggie Creek drainage (Miller and Grybeck, 1973). Quartz latite intrusive rocks of the region are assumed to be mid-Cretaceous in age, the age of the Kachauik pluton. A K/Ar age for the Kachauik pluton is 86.1 +/- 3 Ma (Miller and others, 1972).
|Geologic map unit||(-163.208607641819, 64.8822780221321)|
|Mineral deposit model||Placer Au-PGE (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary; the placer deposits are in the active channel of Aggie Creek. This area is at low enough elevations to have been influenced by Quaternary sea level changes.|
|Workings or exploration||Open-cut placer workings, from hydraulic operations and some dredging, are present on the main channel over a distance of 1.7 miles starting 0.3 miles upstream of the mouth of Aggie Creek. This mining took place between 1929 and 1941 (Cobb, 1978). Dredging was reported for the years 1939 to 1941; this was apparently on the lower part of the creek; where large boulders were encountered (Smith, 1939, B 917-A).|
|Indication of production||None|
|Production notes||Lu and others (1968) report that $101,604 worth of gold (about 3,000 ounces at $35.00 per ounce) were produced from Aggie Creek.|
Cobb, E.H., 1972, Metallic mineral resources map of the Solomon quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-445, 1 sheet, scale 1:250,000.
Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Solomon quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-181, 185 p.
Lu, F.C.J., Heiner, L.E., and Harris, D.P., 1968, Known and potential ore reserves, Seward Peninsula, Alaska: University of Alaska, Mineral Industry Research Laboratory Report 18, 107 p.
Miller, T.P., and Grybeck, D.J., 1973, Geochemical survey of the eastern Solomon and southeastern Bendeleben quadrangles, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 73-189, 115 p.
Miller, T.P., Grybeck, D.J., Elliott, R.L., and Hudson, T.L., 1972, Preliminary geologic map of the southeastern Bendeleben and eastern Solomon quadrangles, eastern Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 72-256, 11 p., 1 sheet, scale 1:250,000.
Smith, P.S., 1939, Mineral industry of Alaska in 1938: U.S. Geological Survey Bulletin 917-A, p. 1-113.
|Reporters||Travis L. Hudson (Applied Geology)|
|Last report date||8/19/1999|