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

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Key
Latitude & Longitude (WGS84):
67° 3' 0'' North , 157° 15' 36'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Shungnak273 (2017)18.8km
Kobuk158 (2017)22.9km


Location: Located above Shungnak River on Bismark Mountain in T. 19 N., R. 7 E., Kateel River Meridian. Shown as locality 18 in Mayfield and Grybeck (1978) and accurate to within 1000 ft. (300 m).
Geology: Network of low grade cross-and slip-fiber chrysotile veinlets 0.5-2.0 in. (1-4 cm) wide in area of serpentine float 800 ft. (244 m) long, several hundred feet (60 m) wide and up to 8 ft. (2.5 m) deep. Nearby magnesite veinlets and asbestos as well as residual boulders of nephrite occurr over a wide area of serpentinized ultramafic rocks cutting schist (Heide and others, 1949, p.16-18).
Workings: 4 or 5 surface trenches dug by USBM circa WW II. Small test shipment made during World War ll but no production (Anderson, 1945, p. 19-20).

Commodities (Major) - Asbestos; (Minor) - Jade, magnesite
Development Status: No
Deposit Model: Serpentine-hosted asbestos

Select Mineral List Type

Standard Detailed Strunz Dana 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: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Brucite
Formula: Mg(OH)2
Reference: U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
Brucite var: Nemalite
Formula: Mg(OH)2
Reference: U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
Chrysotile
Formula: Mg3(Si2O5)(OH)4
Reference: U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
'Ferro-Actinolite-Tremolite Series'
Reference: U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
Magnesite
Formula: MgCO3
Reference: U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Brucite4.FE.05Mg(OH)2
var: Nemalite4.FE.05Mg(OH)2
Group 5 - Nitrates and Carbonates
Magnesite5.AB.05MgCO3
Group 9 - Silicates
Chrysotile9.ED.15Mg3(Si2O5)(OH)4
Unclassified Minerals, Rocks, etc.
'Ferro-Actinolite-Tremolite Series'-

List of minerals arranged by Dana 8th Edition classification

Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
X(OH)2
Brucite6.2.1.1Mg(OH)2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Magnesite14.1.1.2MgCO3
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Chrysotile71.1.5.1Mg3(Si2O5)(OH)4
Unclassified Minerals, Mixtures, etc.
Brucite
var: Nemalite
-Mg(OH)2
'Ferro-Actinolite-Tremolite Series'-

List of minerals for each chemical element

HHydrogen
H ChrysotileMg3(Si2O5)(OH)4
H Brucite (var: Nemalite)Mg(OH)2
H BruciteMg(OH)2
CCarbon
C MagnesiteMgCO3
OOxygen
O ChrysotileMg3(Si2O5)(OH)4
O MagnesiteMgCO3
O Brucite (var: Nemalite)Mg(OH)2
O BruciteMg(OH)2
MgMagnesium
Mg ChrysotileMg3(Si2O5)(OH)4
Mg MagnesiteMgCO3
Mg Brucite (var: Nemalite)Mg(OH)2
Mg BruciteMg(OH)2
SiSilicon
Si ChrysotileMg3(Si2O5)(OH)4

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Anderson, Eskil, 1945, Asbestos and jade occurrences in the Kobuk River region, Alaska: Alaska Territorial Department of Mines Pamphlet 3-R, 26 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.

Other Regions, Features and Areas containg this locality

North America
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.
 
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