Unnamed Occurrence (ARDF - ID002; west of Dishna River), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - ID002; west of Dishna River) | - 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° 49' 52'' North , 157° 31' 55'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is at an elevation of about 1,150 feet on an elongate, northeast-trending ridge. It is about 1.6 mile east-northeast of VABM Cabin and abut 0.3 mile southeast of the center of section 28, T. 32 N., R. 44 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence is an extensively altered, mafic or intermediate dike with conspicuous iron oxide staining. It is part of a large northeast-trending dike swarm that cuts the shale and sandstone of the Cretaceous Kuskokwim Group just east of VABM Cabin (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). One grab sample of altered dike rock contained 2.4 parts per million (ppm) mercury, 14 ppm antimony, and 10 ppm arsenic (McGimsey and others, 1988).
Workings: Surface sampling was conducted by the U.S. Geological Survey in 1986 (McGimsey and others, 1988).
Age: Unknown; possibly Late Cretaceous, based on ages of similar dikes in Iditarod quadrangle (Miller and Bundtzen, 1994).
Alteration: Silica-carbonate alteration of dike rock.
Commodities (Major) - Hg; (Minor) - As, Sb
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: | ID002 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell buried DomainDomain
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