Avan River Occurrence, Noatak Mining District, North Slope Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Avan River Occurrence | Occurrence |
| Noatak Mining District | Mining District |
| North Slope Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
68° 14' 23'' North , 161° 55' 48'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: Location plotted is at center of area cited by Cobb and others (1981, p. A16), in headwaters area of Avan River about 1.5 mi (2.4 km) northeast of peak 3970; located to within 1 mi (1.6 km).
Geology: The geology at the Avan River occurrence is dominated by a Jurassic? ultramafic complex approximately 300 square miles in area, that structurally overlies a variety of Paleozoic and Mesozoic marine sedimentary rocks. The assemblages are characterized by extremely complex folding and faulting. The chromite occurs as small layers or bands and as disseminated grains in the north-central part of ultramafic complex. Pyrrhotite and pentlandite have been identified in polished sections of a few samples of chromite-bearing rocks.
Workings: None
Age: Jurassic?
Commodities (Major) - Cr; (Minor) - Ni
Development Status: No
Deposit Model: Lode; podiform chromite
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 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS - Alaska: | MU008 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Brooks-Northslope Mag DomainDomain
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