Unnamed Occurrence (ARDF - SP015; north of Arrigetch Peaks), Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
Regional Level Types | |
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Unnamed Occurrence (ARDF - SP015; north of Arrigetch Peaks) | - not defined - |
Koyukuk Mining District | Mining District |
Yukon-Koyukuk Census Area | Census Area |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
67° 27' 0'' North , 154° 9' 36'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
201687
Long-form identifier:
mindat:1:2:201687:3
GUID (UUID V4):
ea975d9f-4350-4651-9769-2d9b83070dd4
Located within Gates of the Arctic National Park.
Location: This site is an elevation of about 3700 feet near the head of an unnamed creek 3 miles north of the Arrigetch Peaks. It is in the NE1/4 of sec. 27, T. 24 N., R. 21 E., of the Kateel River Meridian. Location accurate to within 2000 ft. The site corresponds to locality 32 of Grybeck and Nelson (1981).
Geology: This occurrence consists of selected float samples of iron-stained Paleozoic schist and skarn. The source of the float probably is a contact-metamorphic zone adjacent to Devonian granite that crops out to the south. Selected samples contained up to 5000 ppm As, 20 ppm Bi, and 1000 ppm Sn (Grybeck and Nelson, 1981). This occurrence probably is similar in origin to other Devonian contact-metamorphic deposits in nearby areas of the Brooks Range (Newberry and others, 1986).
Workings: Sampled during regional geologic mapping by the USGS in the late 1970s.
Age: Probably related to Devonian granite.
Alteration: Contact metamorphism and skarn.
Commodities (Major) - As, Sn; (Minor) - Bi
Development Status: None
Deposit Model: Skarn (Cox and Singer, 1986; model 14b)
Commodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.List of minerals for each chemical element
Other Databases
Link to USGS - Alaska: | SP015 |
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Other Regions, Features and Areas containing this locality
North America
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Brooks Range DomainDomain
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