Unnamed Occurrence (ARDF - ID090; between George River and Moose Creek), Iditarod Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
62° 32' 3'' North , 157° 4' 48'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
200866
Long-form identifier:
mindat:1:2:200866:3
GUID (UUID V4):
4f2380d9-9fad-4b8d-9158-412498de48fa
Location: This occurrence is on an isolated knob, hill 1560, between the George River and Moore Creek. The occurrence is near the center of the NW 1/4, section 9, T. 2 8N., R. 42 W., of Seward Meridian. The location is accurate.
Geology: This occurrence is in a intensely altered zone with secondary biotite in a small hypabyssal intrusion of intermediate composition and with a pilotaxitic texture. The plug intrudes shale and sandstone strata of the Upper Cretaceous, Kuskokwim Group (Bundtzen and others, 1988; Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). One sample of altered rock with biotite contained 1,000 parts per billion silver (McGimsey and others, 1988).
Workings: Samples were collected by the U.S. Geological Survey in 1983 (McGimsey and others, 1988).
Alteration: Strong zone of secondary biotite in intrusion.
Commodities (Major) - Ag
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
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Unclassified | |||
---|---|---|---|
ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
O | Oxygen | |
O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
F | Fluorine | |
F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Mg | Magnesium | |
Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Al | Aluminium | |
Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Si | Silicon | |
Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
K | Potassium | |
K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Ti | Titanium | |
Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Fe | Iron | |
Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Other Databases
Link to USGS - Alaska: | ID090 |
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Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Farewell buried DomainDomain
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