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:
Lookout Pass Thallium Prospect, Little Valley, Sheeprock Mts, Tooele Co., Utah, USA


mindat Locality ID: 4185
mindat URL: http://www.mindat.org/loc-4185.html

Tectonic Settings:

Total number of sublocalities beneath "Lookout Pass Thallium Prospect, Little Valley, Sheeprock Mts, Tooele Co., Utah, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 40°4'58"N
Longitude: 112°35'48"W
Decimal Degree (lat, lon): 40.082777777778,-112.59666666667

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: As Ba C Ca Fe H Hg Mg O S Sb Si Ti Tl 

Elements from minerals reported directly at this locality: As Ba C Ca Fe H Hg Mg O S Sb Si Ti Tl 

Structural Groups for minerals in this locality: 
ArseniosideriteArsenoliteBaryteBixbyiteCalciteCorundumDiasporeMarcasiteNonePyrite
PyrochloreQuartzRutileSartoriteStibniteSulphurWeissbergite

26 IMA Minerals at location:
Arseniosiderite  (*)Avicennite  (*)Baryte  (*)Calcite  (*)Cervantite  (*)
Cinnabar  (*)Dolomite  (*)Goethite  (*)Graphite  (*)Hematite  (*)
Hydroxycalcioroméite  (*)Kermesite  (*)Marcasite  (*)Parapierrotite  (*)Pierrotite  (*)
Pyrite  (*)Quartz  (*)Rutile  (*)Senarmontite  (*)Stibiconite  (*)
Stibnite  (*)Sulphur  (*)Tripuhyite  (*)Valentinite  (*)Vrbaite  (*)
Weissbergite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Arseniosiderite  (*)ArseniosideriteCa2Fe3+3O2(AsO4)3·3H2O0194
Avicennite  (*)BixbyiteTl2O307
Baryte  (*)BaryteBa(SO4)011547
Calcite  (*)CalciteCa(CO3)027770
Cervantite  (*)NoneSb3+Sb5+O40352
Cinnabar  (*)NoneHgS02600
Dolomite  (*)NoneCaMg(CO3)209895
Goethite  (*)DiasporeFeO(OH)07437
Graphite  (*)NoneC02812
Hematite  (*)CorundumFe2O3014640
Hydroxycalcioroméite  (*)Pyrochlore(Ca,Sb3+)2(Sb5+,Ti)2O6(OH)011
Kermesite  (*)NoneSb2OS20230
Marcasite  (*)MarcasiteFeS205674
Parapierrotite  (*)NoneTlSb5S8010
Pierrotite  (*)SartoriteTl2(Sb,As)10S1603
Pyrite  (*)PyriteFeS2039462
Quartz  (*)QuartzSiO2061156
Rutile  (*)RutileTiO205614
Senarmontite  (*)ArsenoliteSb2O30179
Stibiconite  (*)PyrochloreSb3+Sb5+2O6(OH)0446
Stibnite  (*)StibniteSb2S303418
Sulphur  (*)SulphurS02045
Tripuhyite  (*)RutileFe3+Sb5+O4066
Valentinite  (*)NoneSb2O30369
Vrbaite  (*)NoneHg3Tl4As8Sb2S2005
Weissbergite  (*)WeissbergiteTlSbS204



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL
R070262Lookout Pass Thallium Prospect, Little Valley, Sheeprock Mts, Tooele Co., Utah, USAhttps://rruff.info/R070262
R060397Lookout Pass Thallium Prospect, Little Valley, Sheeprock Mts, Tooele Co., Utah, USAhttps://rruff.info/R060397


All locality data graciously provided by mindat.org

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