Unnamed Occurrence (ARDF - ID085; southeast of VABM Willow), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - ID085; southeast of VABM Willow) | - 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' 17'' North , 157° 8' 2'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is at an elevation of about 2,200 feet about 0.8 mile southeast of triangulation station Willow and 0.3 mile west-southwest of hill 2175. It is about 0.5 mile north of the center of section 3, T. 29 N., R. 42 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence is a north-south trending, 4-inch-thick, iron-stained, quartz-sulfide vein in augite-rich basalt of the Upper Cretaceous and early Tertiary, Iditarod volcanics (Bundtzen, Laird, and Lockwood, 1988; Miller and Bundtzen, 1988). About 2.0 percent pyrite is found on the hanging wall of the quartz vein. The site was prospected by several old pits in previous years and the vein reportedly contained gold (Don Harris, oral communication, 1983). One grab sample contained 3.0 parts per million (ppm) tungsten, 474 ppm chromium, 111 ppm nickel, and 1,130 ppm manganese, but no gold (Bundtzen, Laird, and Lockwood, 1988). The high chrome and nickel values probably reflect background values in the mafic volcanic rocks.
Workings: The site was prospected by several old pits in previous years and the vein reportedly contained gold (Don Harris, oral communication, 1983). Surface samples were collected by Alaska Division of Geological and Geophysical Surveys in 1982 (Bundtzen Laird, and Lockwood, 1988).
Alteration: None noted.
Commodities (Major) - Au; (Minor) - W
Development Status: None
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
2 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
Other Databases
| Link to USGS - Alaska: | ID085 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell buried DomainDomain
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