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Unnamed Occurrence (ARDF - SE002; south of Inland Lake), Selawik Mining District, Northwest Arctic Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - SE002; south of Inland Lake) | - not defined - |
| Selawik Mining District | Mining District |
| Northwest Arctic Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
66° 19' 40'' North , 159° 44' 20'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Selawik | 859 (2017) | 32.9km |
The occurrence is located within the Selawik National Wildlife Refuge.
Location: This occurrence is at an elevation of about 100 feet about 5 miles south of Inland Lake. This site is in the SW1/4 section 21, T. 11 N., R. 5 W., of the Kateel River Meridian. Barker (1985), figure 7, anomalous area 4.
Geology: The country rocks in the area of this occurrence consist of the Cretaceous Inland Lake alkaline intrusive complex. The occurrence consists of locally abundant purple fluorite as matrix and breccia filling in syenite rubble. The fluorite is similar to that associated with the radioactive zones near VAMB Saturday at the Uranium 2 and 3 occurrences (ARDF number SE005 and SE006) (Barker, 1985). A sample of fluorite-bearing pulaskite, possibly a dike, from the Inland Lake alkaline complex contained 31 ppm U and 178 ppm Th, but no radioactive minerals or alteration zones were identified.
Workings: The site was visited briefly and sampled by U.S. Bureau of Mines in 1984.
Age: Cretaceous.
Commodities (Major) - Th, U
Development Status: None
Deposit Model: Radioactive minerals in fluorite-bearing pulaskite.
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.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 3 - Halides | |||
|---|---|---|---|
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
Other Databases
| Link to USGS - Alaska: | SE002 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Koyukuk-Selawik DomainDomain
- Koyukuk ArcsVolcanic Arc
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