Unnamed Occurrence (ARDF - ID076; northwest of upper Deadwood Creek), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
62° 42' 32'' North , 157° 16' 33'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is near hill 1776 on a southeast-trending ridge about 0.7 mile northwest of the sharp bend at the head of Deadwood Creek . It is at an elevation of about 1,750 feet, about 0.4 mile northeast of the center of section 11, T. 30 N., R. 42 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence consists of a series of thin quartz veins in an iron-oxide-stained, sandstone of the Upper Cretaceous, Kuskokwim Group (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). The quartz veins are near a N50E-striking mafic dike that cuts the Kuskokwim Group. One grab sample of the quartz veins contained 200 parts per billion (ppb) gold, 1,500 ppb mercury, and 99 parts per million (ppm) arsenic (Bundtzen, Laird, and Lockwood, 1988).
Workings: The Alaska Division of Geological and Geophysical surveys sampled this occurrence in 1983 (Bundtzen, Laird, and Lockwood, 1988).
Alteration: Silicification.
Commodities (Major) - Au; (Minor) - As, Hg
Development Status: None
Deposit Model: Polymetallic vein (Cox and Singer, 1986; model 22c).
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
1 valid mineral.
Detailed Mineral List:
| ⓘ 'Limonite' |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
Other Databases
| Link to USGS - Alaska: | ID076 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell buried DomainDomain
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