Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org



The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Emmet Co., Iowa, USA


mindat Locality ID: 227814
mindat URL: http://www.mindat.org/loc-227814.html

Tectonic Settings:

Total number of sublocalities beneath "Emmet Co., Iowa, USA": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Estherville Meteorite

Latitude: 43°24'59"N
Longitude: 94°49'59"W
Decimal Degree (lat, lon): 43.416388888889,-94.833055555556

AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
This mineral's age has not yet been recorded.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al Ca Cr Fe H Mg Ni O P S Si Ti Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
CeriteCorundumFeldsparIronNonePyroxeneRutileSpinelTridymiteZircon

16 IMA Minerals at location:
Anorthite  (*)Augite  (*)Chromite  (*)Enstatite  (*)Ilmenite  (*)
Iron  (*)Pigeonite  (*)Rutile  (*)Schreibersite  (*)Stanfieldite  (*)
Taenite  (*)Tetrataenite  (*)Tridymite  (*)Troilite  (*)Whitlockite  (*)
Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Anorthite  (*)FeldsparCa(Al2Si2O8)12147941036
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O612147942060
Chromite  (*)SpinelFe2+Cr2O412147943902
Enstatite  (*)PyroxeneMg2Si2O61214794944
Ilmenite  (*)CorundumFe2+Ti4+O312147945433
Iron  (*)IronFe12147941089
Pigeonite  (*)Pyroxene(Mg,Fe,Ca)2Si2O61214794303
Rutile  (*)RutileTiO212147945614
Schreibersite  (*)None(Fe,Ni)3P1214794374
Stanfieldite  (*)NoneCa4Mg5(PO4)6121479414
Taenite  (*)None(Ni,Fe)1214794703
Tetrataenite  (*)NoneFeNi1214794116
Tridymite  (*)TridymiteSiO21214794458
Troilite  (*)NoneFeS12147941044
Whitlockite  (*)CeriteCa9Mg(PO3OH)(PO4)61214794104
Zircon  (*)ZirconZr(SiO4)12147945251



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

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