Unnamed Occurrence (ARDF - ID089; head of Fourth of July Creek), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - ID089; head of Fourth of July Creek) | - 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° 41' 33'' North , 157° 4' 58'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is at an elevation of about 2,100 feet near a saddle that separates Fourth of July Creek on the south from Moose Creek on the north. The occurrence is about 0.3 mile southeast of hill 2350 and about 0.5 mile west-northwest of the center of section 13, T. 30 N., R. 42 W., of the Seward Meridian. The location is accurate.
Geology: The occurrence consists of a swarm of quartz veins in an altered zone of the Iditarod volcanics (Miller and Bundtzen, 1988; Bundtzen, Laird, and Lockwood, 1988; Miller, Bundtzen, and Gray, 2005). One grab sample of mineralization contained 1,400 parts per billion (ppb) gold, 200 ppb silver, and more than 10.0 parts per million (ppm) mercury (McGimsey and others, 1988).
Workings: Surface samples were collected by the the U.S. Geological Survey in the 1980s (McGimsey and others, 1988).
Alteration: Alteration of volcanic rocks to clay.
Commodities (Major) - Au; (Minor) - Ag, 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.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
Other Databases
| Link to USGS - Alaska: | ID089 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell buried DomainDomain
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