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:
Simpson Mts, Tooele Co., Utah, USA


mindat Locality ID: 158330
mindat URL: http://www.mindat.org/loc-158330.html

Tectonic Settings:

Total number of sublocalities beneath "Simpson Mts, Tooele Co., Utah, USA": 31
Total number of bottom-level sublocalities: 30

Number of Child Localities: 1
Child Localities:
Erickson District (Black Crook District)

Latitude: 39°56'45"N
Longitude: 112°40'39"W
Decimal Degree (lat, lon): 39.945833333333,-112.6775

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 C Ca Cl Cu F Fe H K Mg Mn O Pb S Sb Si Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneAluniteAragoniteBrauniteCalciteChalcopyriteClayCorundumFluoriteMalachite
MicaNoneNot in a structural groupPyriteQuartzRhodoniteRocksaltRutileSphaleriteTetrahedrite

23 IMA Minerals at location:
Braunite  (*)Calcite  (*)Cerussite  (*)Chalcopyrite  (*)Chlorargyrite  (*)
Chrysocolla  (*)Dolomite  (*)Fluorite  (*)Galena  (*)Hematite  (*)
Hemimorphite  (*)Jarosite  (*)Malachite  (*)Manganite  (*)Muscovite  (*)
Pyrite  (*)Pyrolusite  (*)Quartz  (*)Rhodochrosite  (*)Rhodonite  (*)
Smithsonite  (*)Sphalerite  (*)Tetrahedrite-(Zn)  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Braunite  (*)BrauniteMn2+Mn3+6O8(SiO4)1277696483
Calcite  (*)CalciteCa(CO3)3277696,277697,27772127770
Cerussite  (*)AragonitePb(CO3)9277695,277696,277697,277700,277702,277703,277709,277710,2777134979
Chalcopyrite  (*)ChalcopyriteCuFeS26277696,277704,277706,277709,277712,27771927198
Chlorargyrite  (*)RocksaltAgCl2277714,2777191382
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O2277704,2777093531
Dolomite  (*)NoneCaMg(CO3)212777079895
Fluorite  (*)FluoriteCaF27277695,277696,277697,277700,277702,277709,2777139617
Galena  (*)RocksaltPbS14277693,277695,277696,277697,277700,277702,277704,277706,277707,277709,277710,277712,277713,27772124243
Hematite  (*)CorundumFe2O35277698,277701,277710,277718,27772214640
Hemimorphite  (*)Not in a structural groupZn4(Si2O7)(OH)2·H2O12776931689
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)62277718,2777222228
Malachite  (*)MalachiteCu2(CO3)(OH)22277704,27770912537
Manganite  (*)RutileMn3+O(OH)2277696,277705770
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2127769717380
Pyrite  (*)PyriteFeS213277693,277695,277696,277697,277698,277700,277701,277709,277713,277718,277719,277721,27772239462
Pyrolusite  (*)RutileMnO28277695,277696,277697,277700,277705,277709,277713,2777153106
Quartz  (*)QuartzSiO29277693,277696,277697,277698,277701,277712,277714,277721,27772261156
Rhodochrosite  (*)CalciteMn(CO3)12777211711
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)1277721969
Smithsonite  (*)CalciteZn(CO3)2277693,2777122473
Sphalerite  (*)SphaleriteZnS9277693,277695,277696,277697,277700,277706,277709,277713,27772121482
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S133277707,277714,2777195317



No ages have been assigned to this locality yet.

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All locality data graciously provided by mindat.org

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