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Cosmos Creek Prospect, Shungnak Mining District, Northwest Arctic Borough, Alaska, USAi
Regional Level Types
Cosmos Creek ProspectProspect
Shungnak Mining DistrictMining District
Northwest Arctic BoroughBorough
AlaskaState
USACountry

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Latitude & Longitude (WGS84):
67° 0' 36'' North , 157° 8' 24'' West
Latitude & Longitude (decimal):
67.01000,-157.14000
GeoHash:
G#: bebm0ny1s
GRN:
N45W48
Type:
Prospect
Köppen climate type:
ET : Tundra
Nearest Settlements:
PlacePopulationDistance
Shungnak273 (2017)13.6km
Kobuk158 (2017)16.0km
Mindat Locality ID:
197063
Long-form identifier:
mindat:1:2:197063:3
GUID (UUID V4):
0


Location: Located near Shungnak Mountain above and along Cosmos Creek in T. 19 N., R. 8 E., Kateel River Meridian. Shown as locality 20 in Mayfield and Grybeck and accurate to within 1000 ft. (300 m).
Geology: Low grade chrysotile and tremolite asbestos veinlets less than 1.5 in. (3 cm) wide, along strike length of over 1 mi. (1.6 km). Small amounts of Au and minor nephrite reported in nearby creek gravels (Anderson, 1947, p. 15).
Workings: Four trenches dug by USBM (Heide and others, 1949, p. 21-22) to obtain samples for testing.

Commodities (Major) - Asbestos; (Minor) - Au, jade
Development Status: No
Deposit Model: Serpentine-hosted asbestos/placer Au

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


3 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 9 - Silicates
ⓘChrysotile9.00.Mg3(Si2O5)(OH)4
ⓘTremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
Unclassified
ⓘ'Ferro-actinolite-Tremolite Series'-

List of minerals for each chemical element

HHydrogen
Hⓘ ChrysotileMg3(Si2O5)(OH)4
Hⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Hⓘ Ferro-actinolite-Tremolite Series
OOxygen
Oⓘ ChrysotileMg3(Si2O5)(OH)4
Oⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Oⓘ Ferro-actinolite-Tremolite Series
MgMagnesium
Mgⓘ ChrysotileMg3(Si2O5)(OH)4
Mgⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Mgⓘ Ferro-actinolite-Tremolite Series
SiSilicon
Siⓘ ChrysotileMg3(Si2O5)(OH)4
Siⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Siⓘ Ferro-actinolite-Tremolite Series
CaCalcium
Caⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Caⓘ Ferro-actinolite-Tremolite Series
FeIron
Feⓘ Ferro-actinolite-Tremolite Series
AuGold
Auⓘ Native GoldAu

Other Databases

Link to USGS - Alaska:AR011

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Anderson, Eskil, 1945, Asbestos and jade occurrences in the Kobuk River region, Alaska: Alaska Territorial Department of Mines Pamphlet 3-R, 26 p. Anderson, Eskil, 1947, Mineral occurrences other than gold deposits in northwestern Alaska: Alaska Territorial Division of Mines Pamphlet 5-R, 48 p. Heide, H.E., Wright, W.S., and Rutledge, F.A., 1949, Investigations of the Kobuk River asbestos deposits, Kobuk district, northwest Alaska: U.S. Bureau of Mines Report of Investigations 4414, 21 p. Mayfield, C.F., and Grybeck, D., 1978, Mineral occurrences and resource map of the Ambler River quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-120-I, 1 sheet, scale 1:250,000. Reed, I.M., 1931, Report on the placer deposits of the upper Kobuk goldfields: Alaska Territorial Department of Mines Miscellaneous Report 37-1, 57 p
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