Dead Creek; Steptoes Prospect, Shungnak Mining District, Northwest Arctic Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Dead Creek; Steptoes Prospect | Prospect |
| Shungnak Mining District | Mining District |
| Northwest Arctic Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
67° 12' North , 156° 30' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Kobuk | 158 (2017) | 36.5km |
New location based on information provided by J.M. Proffett, 1997. Information from Nana Development Corporation (1997) based on 1984 unpublished Bear Creek Exploration report.
Location: Located on ridge north of VABM Riley, east of the Shungnak River in sec. 18, T. 21 N., R. 11 E., Kateel River Meridian. This prospect is shown as locality 41 in Mayfield and Grybeck (1978), but is not correctly located.
Geology: This deposit consists of coarse disseminated grains and semi-massive lenses of sulfide minerals hosted by south dipping coarse grained quartz-muscovite schist. The schist is interlayered with greenstone(metabasalt) and locally interbedded with thin quartzite beds.The two ore horizons are complexly deformed to pinch and swell structure and are cut off to the east along strike by a discordant body of greenstone. Some concordant greenstone may be tuffaceous or argillaceous dolomite. This schist belt type volcanogenic Cu-Zn deposit is similar to the Arctic deposit (AR025) (unpublished Bear Creek Exploration Report, 1984).
Workings: Explored by several diamond drill holes and surface geologic mapping (Nana Development Corporation, written comm., 1997)
Age: Devonian-Mississippian
Commodities (Major) - Cu, Pb, Zn; (Minor) - Ag
Development Status: No
Deposit Model: Kuroko
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
4 valid minerals.
Detailed Mineral List:
| ⓘ Bornite Formula: Cu5FeS4 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS - Alaska: | AR026 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Brooks Range DomainVolcanic Arc
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