Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Mystic Creek Coal Basin, Denali Borough, Alaska, USAi
Regional Level Types
Mystic Creek Coal BasinBasin
Denali BoroughBorough
AlaskaState
USACountry

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Latitude & Longitude (WGS84):
64° 0' North , 147° 49' West
Latitude & Longitude (decimal):
64.00000,-147.81667
GRN:
N43W50
Type:
Basin
Köppen climate type:
Dfc : Subarctic climate
Mindat Locality ID:
425366
Long-form identifier:
mindat:1:2:425366:5
GUID (UUID V4):
0


Coal field with burnt coal seams with paralava.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

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


Mineral List


7 valid minerals.

Rock Types Recorded

Note: 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:

ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Fayalite
Formula: Fe2+2SiO4
ⓘ 'Feldspar Group'
ⓘ 'Glass'
ⓘ Hematite
Formula: Fe2O3
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Magnetite var. Titanium-bearing Magnetite
Formula: Fe2+(Fe3+,Ti)2O4
ⓘ Mullite
Formula: Al4+2xSi2-2xO10-x
ⓘ 'Olivine Group'
Formula: M2SiO4
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Quartz
Formula: SiO2
ⓘ Sekaninaite
Formula: (Fe,Mg)2Al3(AlSi5O18)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘvar. Titanium-bearing Magnetite4.BB.05Fe2+(Fe3+,Ti)2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘFayalite9.AC.05Fe2+2SiO4
ⓘMullite9.AF.20Al4+2xSi2-2xO10-x
ⓘSekaninaite9.CJ.10(Fe,Mg)2Al3(AlSi5O18)
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Unclassified
ⓘ'Feldspar Group'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Glass'-
ⓘ'Olivine Group'-M2SiO4

List of minerals for each chemical element

OOxygen
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ FayaliteFe22+SiO4
Oⓘ HematiteFe2O3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MulliteAl4+2xSi2-2xO10-x
Oⓘ QuartzSiO2
Oⓘ Sekaninaite(Fe,Mg)2Al3(AlSi5O18)
Oⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Olivine GroupM2SiO4
NaSodium
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ Sekaninaite(Fe,Mg)2Al3(AlSi5O18)
AlAluminium
Alⓘ MulliteAl4+2xSi2-2xO10-x
Alⓘ Sekaninaite(Fe,Mg)2Al3(AlSi5O18)
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ FayaliteFe22+SiO4
Siⓘ MulliteAl4+2xSi2-2xO10-x
Siⓘ QuartzSiO2
Siⓘ Sekaninaite(Fe,Mg)2Al3(AlSi5O18)
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Olivine GroupM2SiO4
CaCalcium
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Tiⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
FeIron
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ FayaliteFe22+SiO4
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Sekaninaite(Fe,Mg)2Al3(AlSi5O18)
Feⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4

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

Reidel, S.P. & Ross, M.E. (2023): A rare sekaninaite occurrence in the Nenana Coal Basin, Alaska Range, Alaska. American Mineralogist, 108, 1794–1804.
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