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:
Water Hen Occurrence, Western Margin Duluth Complex, St. Louis Co., Minnesota, USA

Oldest recorded age at locality: 1100
Youngest recorded age at locality: 1100

mindat Locality ID: 167600
mindat URL: http://www.mindat.org/loc-167600.html

Tectonic Settings:

Total number of sublocalities beneath "Water Hen Occurrence, Western Margin Duluth Complex, St. Louis Co., Minnesota, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 47°26'5"N
Longitude: 92°6'31"W
Decimal Degree (lat, lon): 47.434722222222,-92.108611111111

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: Ag Al As Bi C Cu Fe Mg Ni O Pb S Si Te Zn 

Elements from minerals reported directly at this locality: Ag Al As Bi C Cu Fe Mg Ni O Pb S Si Te Zn 

Structural Groups for minerals in this locality: 
ArsenicBerylChalcopyriteCopperMarcasiteNickelineNonePentlanditePyriteRocksalt
SphaleriteTetradymite

13 IMA Minerals at location:
Bismuth  (*)Chalcopyrite  (*)Cordierite  (*)Galena  (*)Graphite  (*)
Marcasite  (*)Nickeline  (*)Pentlandite  (*)Pyrite  (*)Pyrrhotite  (*)
Silver  (*)Sphalerite  (*)Tetradymite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Bismuth  (*)ArsenicBi1100110001966
Chalcopyrite  (*)ChalcopyriteCuFeS211001100027198
Cordierite  (*)BerylMg2Al4Si5O181100110001008
Galena  (*)RocksaltPbS11001100024243
Graphite  (*)NoneC1100110002812
Marcasite  (*)MarcasiteFeS21100110005674
Nickeline  (*)NickelineNiAs110011000633
Pentlandite  (*)Pentlandite(Ni,Fe)9S81100110001512
Pyrite  (*)PyriteFeS211001100039462
Pyrrhotite  (*)NickelineFe7S81100110009056
Silver  (*)CopperAg1100110005186
Sphalerite  (*)SphaleriteZnS11001100021482
Tetradymite  (*)TetradymiteBi2Te2S110011000510



1 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
EG105_1057_010110011001100     Yes Ni, Cu, Pt, Pd, Rh, Ir, Os, Ru167667Western Margin Duluth Complex, St. Louis Co., Minnesota, USADuluthBegg et al. (2010)10.2113/econgeo.105.6.1057EG105_1057 


SampleSource LocalityReference URL


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