Unnamed Occurrence (ARDF - ID160; north of upper Smith Creek), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - ID160; north of upper Smith 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° 9' 7'' North , 158° 22' 22'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Crooked Creek | 105 (2016) | 34.2km |
Location: This occurrence is on the crest of a low northeast-trending ridge that is northwest of the head of Smith Creek. It is near hill 1170 and about 0.6 mile west-southwest of the center of section 24, T. 24 N., R. 50 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence consists of a zone of hydrothermally altered olivine-bearing, basaltic andesite of the Iditarod volcanics (Miller and Bundtzen, 1988; Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). The alteration which is marked by sericite and carbonate minerals occurs along N35E-striking cleavage planes that dip about 42NW. The size of the zone is uncertain. One grab sample of mineralization contained 240 parts per million (ppm) antimony, 100 ppm copper, and 7.0 ppm molybdenum (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: Alteration marked by sericite and carbonate minerals.
Commodities (Major) - Sb; (Minor) - Cu, Mo
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
1 valid mineral.
Detailed Mineral List:
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 9 - Silicates | |||
|---|---|---|---|
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| O | Oxygen | |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Other Databases
| Link to USGS - Alaska: | ID160 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell buried DomainDomain
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