Unnamed Occurrences (ARDF - SP010; north of Noatak River), Noatak Mining District, Northwest Arctic Borough, Alaska, USAi
Regional Level Types | |
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Unnamed Occurrences (ARDF - SP010; north of Noatak River) | - not defined - |
Noatak Mining District | Mining District |
Northwest Arctic Borough | Borough |
Alaska | State |
USA | Country |
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Latitude & Longitude (WGS84):
67° 33' 0'' North , 155° 0' 36'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
202061
Long-form identifier:
mindat:1:2:202061:0
GUID (UUID V4):
eb65fa6d-e0eb-46b7-b640-59ff0802c5b8
Located within Gates of the Arctic National Park.
Location: This site is a composite of three occurrences (localities 23-25 of Grybeck and Nelson, 1981) in an area of about 10 square miles north of the Noatak River and south of Mt. Papiok. The coordinates are for the center of an area, in sec. 22, T. 25 N., R. 17 E., of the Kateel River Meridian. Location of area accurate to within 2000 ft.
Geology: The occurrences at the site are contact-metamorphic deposits in Paleozoic phyllite and limestone over a dome of Devonian gneissic granite that is exposed on the north bank of the Noatak River. Three small mineral occurrences have been documented (Grybeck and Nelson, 1981). They include quartz vein rubble and skarn containing various combinations of ore minerals including galena, chalcopyrite, pyrrhotite, and sphalerite. Select samples contain up to 480 ppm Ag, 3.5 ppm Au, 5,000 ppm As, 150 ppm Be, 150 ppm Bi, and 100 ppm Sn. The occurrences are similar to those at SP009, and to other contact metamorphic deposits elsewhere in the Brooks Range (Newberry and others, 1986).
Workings: Samples were mostly collected during spot stops and short traverses during geologic mapping by the USGS in the late 1970s.
Age: Related to the intrusion of the Devonian pluton.
Alteration: Quartz and calc-silicate minerals.
Commodities (Major) - Cu, Pb, Sn; (Minor) - Ag, As, Au, Be, Bi, Sb, Zn
Development Status: None
Deposit Model: Skarn (Cox and Singer, 1986; model 14b)
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:
ⓘ Chalcopyrite Formula: CuFeS2 |
ⓘ Galena Formula: PbS |
ⓘ Pyrrhotite Formula: Fe1-xS |
ⓘ Quartz Formula: SiO2 |
ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 2 - Sulphides and Sulfosalts | |||
---|---|---|---|
ⓘ | Sphalerite | 2.CB.05a | ZnS |
ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
ⓘ | Galena | 2.CD.10 | PbS |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
O | Oxygen | |
---|---|---|
O | ⓘ Quartz | SiO2 |
Si | Silicon | |
Si | ⓘ Quartz | SiO2 |
S | Sulfur | |
S | ⓘ Chalcopyrite | CuFeS2 |
S | ⓘ Galena | PbS |
S | ⓘ Pyrrhotite | Fe1-xS |
S | ⓘ Sphalerite | ZnS |
Fe | Iron | |
Fe | ⓘ Chalcopyrite | CuFeS2 |
Fe | ⓘ Pyrrhotite | Fe1-xS |
Cu | Copper | |
Cu | ⓘ Chalcopyrite | CuFeS2 |
Zn | Zinc | |
Zn | ⓘ Sphalerite | ZnS |
Pb | Lead | |
Pb | ⓘ Galena | PbS |
Other Databases
Link to USGS - Alaska: | SP010 |
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Other Regions, Features and Areas containing this locality
North America
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Brooks Range DomainDomain
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