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Unnamed Occurrence (ARDF - HU002; Norutak Hills), Shungnak Mining District, Northwest Arctic Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - HU002; Norutak Hills) | Occurrence |
| Shungnak Mining District | Mining District |
| Northwest Arctic Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
66° 45' 8'' North , 154° 54' 20'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: This occurrence is at an elevation of about 2,525 feet, in a saddle in the Norutak Hills. It is in the SE1/4 of section 26, T. 16 N., R. 18 E. of the Kateel River Meridian. The location is accurate within 1 mile.
Geology: According to Grybeck (1977), this occurrence mainly consists of intensely oxidized, porphyritic granite and pyritized, soda rhyolite that are weakly anomalous in zinc. The oxidized rocks are marked by prominent gossan. Two semi-quantitative spectrographic analyses of altered andesite and soda rhyolite with disseminated pyrite each show 0.007% Cu and 0.001 ounce of gold per ton, but no detectable molybdenum or zinc (Patton and Miller, 1966). The rocks in the area are Jurassic or Cretaceous andesitic volcanic rocks, intruded by small hypabyssal bodies, chiefly latite and quartz-latite porphyry, with subordinate pyritiferous, soda rhyolite (Patton and Miller, 1966).
Workings: Only surface sampling.
Age: Intrusive bodies are Cretaceous or younger.
Alteration: Oxidation of pyrite forms prominent gossan.
Commodities (Major) - Cu, Mo, Zn; (Minor) - Au
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
1 valid mineral.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
Other Databases
| Link to USGS - Alaska: | HU002 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Koyukuk ArcsVolcanic Arc
- Koyukuk north DomainDomain
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