Unnamed Occurrence (ARDF - NT004; near Rabbit Creek), Noatak Mining District, Northwest Arctic Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - NT004; near Rabbit Creek) | - not defined - |
| Noatak Mining District | Mining District |
| Northwest Arctic Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
67° 37' 45'' North , 163° 23' 56'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Noatak | 514 (2011) | 19.5km |
Mindat Locality ID:
201480
Long-form identifier:
mindat:1:2:201480:0
GUID (UUID V4):
23a2d6b1-eace-4cf9-8a69-a065c8c6e3c5
This occurrence is now within the Cape Krusenstern National Monument which is closed to mining and mineral exploration.
Location: This occurrence consists of float boulders collected in Rabbit Creek at an elevation of about 600 feet. The occurrence is about 6.2 miles southeast of Igiglogruk Mountain near the northeast corner of Section 28, T. 26 N., R. 21 W., of the Kateel River Meridian. The location is accurate.
Geology: Rounded boulders and cobbles of layered, possibly cumulate, gabbroic to troctolitic mafic rocks, variably altered, contain sulfide minerals and anomalous values of platinum group metals (Mowatt and Jansons, 1985). The sulfides include chalcopyrite, bornite, covellite, pyrite, and pyrrhotite. Five sulfide-bearing samples of altered mafic rocks contained 412 to 1,406 parts per billion (ppb), 343 to 892 ppb palladium, and up to 309 ppb Au and 3,000 parts per million Cu. The bedrock source for these boulders is unknown but presumably is one of the mafic-ultramafic complexes of the western Brooks Range.
Workings: Limited sampling by government geologists in the early 1980's.
Alteration: Noted but not identified.
Reserves: None.
Commodities (Major) - Au, Cu, Pd, Pt
Development Status: None
Deposit Model: Cu-Ni-PGE in mafic rocks from a mafic-ultramafic complex.
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
5 valid minerals.
Detailed Mineral List:
| β Bornite Formula: Cu5FeS4 |
| β Chalcopyrite Formula: CuFeS2 |
| β Covellite Formula: CuS |
| β Pyrite Formula: FeS2 |
| β Pyrrhotite Formula: Fe1-xS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Bornite | 2.BA.15 | Cu5FeS4 |
| β | Covellite | 2.CA.05a | CuS |
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| β | Pyrrhotite | 2.CC.10 | Fe1-xS |
| β | Pyrite | 2.EB.05a | FeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | β Bornite | Cu5FeS4 |
| S | β Chalcopyrite | CuFeS2 |
| S | β Covellite | CuS |
| S | β Pyrite | FeS2 |
| S | β Pyrrhotite | Fe1-xS |
| Fe | Iron | |
| Fe | β Bornite | Cu5FeS4 |
| Fe | β Chalcopyrite | CuFeS2 |
| Fe | β Pyrite | FeS2 |
| Fe | β Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | β Bornite | Cu5FeS4 |
| Cu | β Chalcopyrite | CuFeS2 |
| Cu | β Covellite | CuS |
Other Databases
| Link to USGS - Alaska: | NT004 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Brooks Range DomainDomain
- Colville Basin and FoldbeltBasin
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References
