Unnamed Occurrence (ARDF - ID052; west of VABM Idono), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - ID052; west of VABM Idono) | - not defined - |
| Iditarod Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
62° 38' 21'' North , 158° 15' 14'' West
Latitude & Longitude (decimal):
Köppen climate type:
Locality equivalent to #70 of Miller, Bundtzen, and Gray (2005), Table 1.
Location: This occurrence is about 4,000 feet west-northwest of VABM Idono at an elevation of about 650 feet. It is in the northern part of section 3, T. 29 N., R. 48 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence is a potassically altered outcrop of rhyolite of the Upper Cretaceous to early Tertiary, Yetna River volcanic field (Miller and Bundtzen, 1994). A grab sample of the rhyolite contained 130 parts per million (ppm) arsenic, 50 parts per billion (ppb) gold, 1,400 ppb mercury, and 20 ppm tin (McGimsey and others, 1988; Miller, Bundtzen, and Gray, 2005).
Workings: The U.S. Geological Survey sampled the occurrence in 1984 (McGimsey and others, 1988).
Age: Unknown; the Yetna River volcanic field is Late Cretaceous to Tertiary (58-68 Ma) in age (Miller and Bundtzen (1994).
Alteration: Potassic alteration.
Commodities (Major) - Au; (Minor) - As, Hg, Sn
Development Status: None
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: | ID052 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Farewell-Innoko-Idono DomainDomain
- Koyukuk ArcsVolcanic Arc
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