Farewell Mineral Licks Occurrence, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Farewell Mineral Licks Occurrence | Occurrence |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
62° 29' 41'' North , 153° 36' 21'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
See White Mountain Mercury Mine (MG025) and the Peggy Barbara (MG026) and Mary Margaret (MG027) prospects.
Location: The Farewell Mineral Licks are located just east of a low saddle about 6 kilometers due south of Farewell Lake Lodge at an elevation of 960 feet (293 m) in the NE1/4 sec. 30, T. 28 N., R. 23 W., of the Seward Meridian. The reporter investigated the site in 1980 and 1981.
Geology: The Farewell Mineral Licks are a series of three subcircular areas of dark yellow-brown soils frequently utilized as mineral licks and roll areas by buffalo (Bison bison), moose (Alces alces), and other ungulates. Each 'lick' is approximately 40 meters in diameter, and composed of distinctive yellow-brown residual soils in Quaternary drift directly overlying the active strand of the Denali-Farewell fault, a major transcurrent fault that forms an arc across central Alaska and Yukon (Bundtzen, Harris, and Gilbert, 1997). A distinct silicrete rind covers soil at the site. Dolomite fragments were recognized in one soil sample. One soil sample taken at the Farewell Mineral licks was anomalous in copper (250 ppm), manganese (8,500 ppm), potassium (6.50 percent), and sodium (12.00 percent). The manganese may be the result of decomposed dolomite. The remaining elements may be the result of a hydrothermal plumbing system within the Denali fault system.
Workings: One soil sample taken at the Farewell Mineral Licks was anomalous in copper (250 ppm), manganese (8,500 ppm), potassium (6.50 percent) and sodium (12.00 percent).
Age: Quaternary, based on C14 age data summarized by Kline and Bundtzen (1986).
Alteration: Silicrete and ferricrete.
Reserves: None.
Commodities (Major) - Cu, Fe, Mn; (Minor) - K, Na
Development Status: No
Deposit Model: Unknown; possibly hot springs related.
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:
| ⓘ Dolomite Formula: CaMg(CO3)2 |
| ⓘ 'Limonite' |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 5 - Nitrates and Carbonates | |||
|---|---|---|---|
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Dolomite | CaMg(CO3)2 |
| O | Oxygen | |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| Mg | Magnesium | |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Ca | Calcium | |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
Other Databases
| Link to USGS - Alaska: | MG039 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Farewell-McGrath DomainDomain
- Farewell TerranePassive Margin
USA
- Alaska
- Yukon-Koyukuk Census Area
- McGrath Mining DistrictMining District
- Yukon-Koyukuk Census Area
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