Unnamed Occurrence (ARDF - MG023; overlooking tributary of Cheeneetnuk River), Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - MG023; overlooking tributary of Cheeneetnuk River) | - not defined - |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
62° 10' 22'' North , 154° 55' 40'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This unnamed occurrence is located on a south-facing spur overlooking an unnamed tributary of Cheeneetnuk River. It is about 2.5 kilometers southwest of VABM Big (White Mountain), at an elevation of 1,900 feet (579 m) in the NE1/4 sec. 15, T. 24 N., R. 31 W., of the Seward Meridian. The location corresponds to map number 25-26 of Gilbert (1981); his station no. 79WG192.
Geology: This unnamed occurrence is a ferricrete gossan hosted in an unnamed Ordovician mudstone unit of the Nixon Fork subterrane (Gilbert, 1981; Wilson and others, 1998). The gossan is parallel to bedding in the unit; no surface measurements are available. Two grab samples taken in the gossan zone contained up to 3.0 grams/tonne silver, 81 ppm copper, 320 ppm lead, and 6,800 ppm zinc (Gilbert, 1981).
Workings: W.G. Gilbert found the occurrence during geological mapping for the Alaska Division of Geological and Geophysical Surveys in 1979 (Gilbert, 1981). Two grab samples taken across the gossan zone contained up to 3.0 grams/tonne silver, 81 ppm copper, 320 ppm lead, and 6,800 ppm zinc (Gilbert, 1981).
Reserves: None.
Commodities (Major) - Pb, Zn; (Minor) - Ag, Cu
Development Status: No
Deposit Model: Polymetallic replacement (?) (Cox and Singer, 1986; model 19a)
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
Detailed Mineral List:
| ⓘ 'Limonite' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Unclassified | |||
|---|---|---|---|
| ⓘ | 'Limonite' | - | |
List of minerals for each chemical element
Other Databases
| Link to USGS - Alaska: | MG023 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Farewell-McGrath DomainDomain
- Farewell TerranePassive Margin
- Minchumina BasinBasin
USA
- Alaska
- Yukon-Koyukuk Census Area
- McGrath Mining DistrictMining District
- Yukon-Koyukuk Census Area
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