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:
Horse Creek, Rico District (Pioneer District), Rico Mts, Dolores Co., Colorado, USA


mindat Locality ID: 276677
mindat URL: http://www.mindat.org/loc-276677.html

Tectonic Settings:

Total number of sublocalities beneath "Horse Creek, Rico District (Pioneer District), Rico Mts, Dolores Co., Colorado, USA": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Calico Peak Alunite Deposit

Latitude: 37°42'37"N
Longitude: 108°5'22"W
Decimal Degree (lat, lon): 37.710277777778,-108.08944444444
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 Cl F Fe H K Na O Pb S Si 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AluniteClayCorundumKaoliniteMicaNonePyriteQuartzSulphur

11 IMA Minerals at location:
Alunite  (*)Hematite  (*)Jarosite  (*)Kaolinite  (*)Muscovite  (*)
Natroalunite  (*)Plumbojarosite  (*)Pyrite  (*)Quartz  (*)Sulphur  (*)
Zunyite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Alunite  (*)NoneKAl3(SO4)2(OH)61187689966
Hematite  (*)CorundumFe2O3118768914640
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)611876892228
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)411876895591
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2118768917380
Natroalunite  (*)AluniteNaAl3(SO4)2(OH)61187689128
Plumbojarosite  (*)AlunitePb0.5Fe3+3(SO4)2(OH)61187689477
Pyrite  (*)PyriteFeS2118768939462
Quartz  (*)QuartzSiO2118768961156
Sulphur  (*)SulphurS11876892045
Zunyite  (*)NoneAl13Si5O20(OH,F)18Cl118768986


No ages have been assigned to this locality yet.
SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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