Unnamed Occurrence (ARDF - SP018; west of upper Millichetah Creek), Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
67° 27' 10'' North , 153° 27' 57'' West
Latitude & Longitude (decimal):
Köppen climate type:
Located within Gates of the Arctic National Park.
Location: This site is at an elevation of about 3800 feet on a ridge 1.5 miles SW of the head of Millichetah Creek. It is in the N1/2 of sec. 35, T. 24 N., R. 24 E., of the Kateel River Meridian. Location is accurate to within 1000 ft. The site corresponds to locality 40 of Grybeck and Nelson (1981).
Geology: This occurrence consists of a grab sample of copper-stained, orange-weathering marble (Nelson and Grybeck, 1981). Marble unit is part of the Devonian and Silurian Skajit Limestone (Nelson and Grybeck, 1980). Sample of marble contained 500 ppm As, 15,000 ppm Cu, 5000 ppm Pb, 7000 ppm Sb, and 7000 Zn. No other mineralization observed in the area.
Workings: Brief examination of the area by the USGS in the late 1970s indicated no other mineralization.
Commodities (Major) - Ag, Cu, Pb, Sb, Zn
Development Status: None
Deposit Model: Copper-stained limestone
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: | SP018 |
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Other Regions, Features and Areas containing this locality
North AmericaContinent
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Brooks Range DomainVolcanic Arc
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