Unnamed Occurrence (ARDF - ID001; south tributary of Dishna River), Innoko Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - ID001; south tributary of Dishna River) | - not defined - |
| Innoko Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
62° 51' 29'' North , 157° 33' 53'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This placer occurrence is at an elevation of about 600 feet in an unnamed, northeast-flowing tributary of the Dishna River. The occurrence is about 0.5 mile south-southeast of the center of section 17, T. 32 N., R. 44 W., of the Seward Meridian. The location is accurate.
Geology: The rocks in the vicinity of this placer occurrence are shale and sandstone of the Upper Cretaceous, Kuskokwim Group near a fault contact with Jurassic ophiolite (Miller and Bundtzen, 1994; Miller, Bundtzen and Gray, 2005). A panned concentrate of alluvial sediments collected at the site contained several grains of gold and 20 to 50 percent cinnabar (Bennett and others, 1988). The lode source of the gold and cinnabar is unknown.
Workings: Surface sampling by the U.S. Geological Survey in 1985 (Bennett and others, 1988).
Age: Probably Quaternary.
Commodities (Major) - Au; (Minor) - Hg
Development Status: None
Deposit Model: Placer Au-cinnabar deposit (Cox and Singer, 1986; model 39a).
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.
Detailed Mineral List:
| ⓘ Cinnabar Formula: HgS |
| ⓘ Native Gold Formula: Au |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Cinnabar | 2.CD.15a | HgS |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Cinnabar | HgS |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Hg | Mercury | |
| Hg | ⓘ Cinnabar | HgS |
Other Databases
| Link to USGS - Alaska: | ID001 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell-Innoko-Idono DomainDomain
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