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Eagles Nest Prospect (Eagle's Den), Kantishna Mining District, Denali Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Eagles Nest Prospect (Eagle's Den) | Prospect |
| Kantishna Mining District | Mining District |
| Denali Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 30' 32'' North , 151° 0' 14'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
The prospect is in Denali National Park and Preserve.
Location: The Eagles Nest prospect (Cobb, 1980 [OFR 80-363]) is at an elevation of about 2400 feet, on the northwest flank of Busia Mountain south of Eldorado Creek. It is in the SE1/4 SE1/4 section 22, T. 16 S., R. 18 W., Fairbanks Meridian. The location is accurate. The prospect is location 6 of Bundtzen, Smith, and Tosdal (1976), C of Hawley and Associates (1978), 19 of MacKevett and Holloway (1977), and 11 (Eagle's Den) of Thornsberry, McKee, and Salisbury (1984).
Geology: The Eagles Nest quartz-stibnite vein strikes about N60W and dips 55 NE. It is partly covered, but two outcrops and intervening float suggest that the vein is at least 400 feet long; locally it is at least 20 feet thick. The country rock is quartz-feldspar-mica schist of the Birch Creek Schist (Bundtzen, 1981). At an elevation of about 2500 feet, the vein is at least 20 feet thick. It contains stibnite masses as much as a foot thick in a 3-foot-wide footwall zone of massive to brecciated quartz. The vein also crops out about 400 feet to the northeast, at an elevation of about 2300 feet. Selected, high-grade samples assayed as much as 44 percent antimony, up to 2.76 ounces of silver per ton, and 0.1-0.2 ppm of mercury (Hawley and Associates, 1978). The vein is similar to those at the Stampede (MM144) and Slate Creek mines (MM153).
Workings: The vein was discovered by Jim Fuksa sometime before 1976; it has been explored by shallow, hand-dug and blasted open cuts.
Age: The deposit is assumed to be Eocene (see record MM091).
Commodities (Major) - Sb; (Minor) - Ag
Development Status: None
Deposit Model: Simple stibnite deposit (Cox and Singer, 1986; model 27d).
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
2 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Stibnite | 2.DB.05 | Sb2S3 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Stibnite | Sb2S3 |
| Sb | Antimony | |
| Sb | ⓘ Stibnite | Sb2S3 |
Other Databases
| Link to USGS - Alaska: | MM026 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- North America PlatformPassive Margin
- Yukon-Tanana lower DomainDomain
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