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Unnamed Occurrence (ARDF - ID152; head of American Creek), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - ID152; head of American 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° 3' 28'' North , 158° 59' 49'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Chuathbaluk | 125 (2017) | 55.5km |
Location: This occurrence is at an elevation of about 1,300 feet on a sharp, northeast-trending ridge. It is about 3.6 miles southwest of the top of Mosquito Mountain and about 0.3 mile southwest of the northeast corner of section 28, T. 23 N., R. 53 W., of the Seward meridian. The location is accurate.
Geology: This occurrence is a iron oxide gossan formed by the oxidization of undetermined sulfide minerals; the gossan is in hornfels developed in siltstone and siliceous sandstone of the Upper Cretaceous, Kuskokwim Group (Cady and others, 1955; Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). Several pods of iron-oxide-rich gossan were sampled. The samples contained up to 700 parts per billion (ppb) silver, 640 parts per million (ppm) zinc, 500 ppm copper, 110 ppm antimony, 6.0 ppm bismuth, 40 ppm arsenic, and 20.00 percent iron (McGimsey and others, 1988).
Workings: Samples were collected by the U.S. Geological Survey and Alaska Division of Geological and Geophysical Surveys in 1985 (McGimsey and others, 1988).
Alteration: Gossan developed.
Commodities (Major) - Ag, Cu, Zn; (Minor) - As, Bi, Fe, Sb
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 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Goethite | Fe3+O(OH) |
| O | Oxygen | |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Fe | Iron | |
| Fe | ⓘ Goethite | Fe3+O(OH) |
Other Databases
| Link to USGS - Alaska: | ID152 |
|---|
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