Unnamed Occurrence (ARDF - ID153; on Mosquito Mountain), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - ID153; on Mosquito Mountain) | - 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° 5' 0'' North , 158° 53' 52'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is about 0.3 mile southeast of the summit of Mosquito Mountain at an elevation of about 2,100 feet. It is at about the center of the east boundary of section 13, T. 23 N., R. 53 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence is a zone of heavily iron-oxide-stained altered hornfels derived from the Upper Cretaceous Kuskokwim Group (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). The rocks on Mosquito Mountain are a tuff-rich, clastic unit altered to hornfels that is cut by numerous intermediate sills; this suggests the presence of a nearby or buried intrusion (Miller and Bundtzen, 1994). The altered zone is of uncertain size and orientation. Grab samples of altered gossan contained up to 700 parts per billion (ppb) silver, 50 parts per million (ppm) arsenic, 38 ppm antimony, and 1,400 ppb mercury (McGimsey and others, 1988).
Workings: Samples were collected by the U.S. Geological Survey and Alaska Division of Geological and Geophysical Surveys in the 1980s (McGimsey and others, 1988).
Alteration: Iron oxide gossan.
Commodities (Major) - Ag; (Minor) - As, Hg, 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
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: | ID153 |
|---|
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