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Matanuska Valley, Matanuska-Susitna Borough, Alaska, USAi
Regional Level Types
Matanuska ValleyValley
Matanuska-Susitna BoroughBorough
AlaskaState
USACountry

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Latitude & Longitude (WGS84):
61° 36' 27'' North , 149° 4' 44'' West
Latitude & Longitude (decimal):
61.60750,-149.07889
GeoHash:
G#: bdvyrxk1d
GRN:
N42W52
Type:
Valley
Köppen climate type:
Dfc : Subarctic climate
Mindat Locality ID:
224614
Long-form identifier:
mindat:1:2:224614:0
GUID (UUID V4):
0


A valley.

Mineralization is hosted in the Chickaloon Formation - nonmarine strata that are Paleocene to Oligocene in age. Abundant fossil wood.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


5 valid minerals.

Detailed Mineral List:

ⓘ 'Amber'
Habit: tear drop shaped masses.
Colour: pale yellow but varies to dark orange-red
Description: fossiliferous arthropod inclusions, including aphid nymphs and an ant (Formicidae)
ⓘ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
ⓘ Calcite
Formula: CaCO3
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Quartz
Formula: SiO2
ⓘ Siderite
Formula: FeCO3

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘSiderite5.AB.05FeCO3
ⓘAnkerite5.AB.10Ca(Fe2+,Mg)(CO3)2
ⓘDolomite5.AB.10CaMg(CO3)2
Unclassified
ⓘ'Amber'-

List of minerals for each chemical element

CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
Cⓘ SideriteFeCO3
OOxygen
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Oⓘ CalciteCaCO3
Oⓘ DolomiteCaMg(CO3)2
Oⓘ QuartzSiO2
Oⓘ SideriteFeCO3
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Mgⓘ DolomiteCaMg(CO3)2
SiSilicon
Siⓘ QuartzSiO2
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Caⓘ CalciteCaCO3
Caⓘ DolomiteCaMg(CO3)2
FeIron
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ SideriteFeCO3

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

KYLE TROSTLE (2009) GEOCHEMISTRY, MINERALOGY, AND MORPHOLOGY OF FOSSIL WOOD FROM THE LATE PALEOCENE-EARLY EOCENE CHICKALOON FORMATION: 22nd Keck Geology Undergraduate Research Symposium p.95-100
Dempsky, M. R. (2010, March). Amber Inclusions in the Paleocene/Eocene Chickaloon Formation, Matanuska Valley, Alaska. In Geological Society of America Abstracts with Programs, (Vol. 42, No. 1, p. 186).
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