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:
Weld Co., Colorado, USA


mindat Locality ID: 14216
mindat URL: http://www.mindat.org/loc-14216.html

Tectonic Settings:

Total number of sublocalities beneath "Weld Co., Colorado, USA": 56
Total number of bottom-level sublocalities: 53

Number of Child Localities: 49
Child Localities:
Berthoud Meteorite
Eastman Basin Occurrence
Furney Manganese Prospect
Grover/Keota Area
Indian Creek Occurrence
Johnstown
Kalous
Keota & Iliff Silica Deposits
King Solomon Occurrence
Lafayette
Lyons Sandstone
New Raymer
Raymer
Stoneham
Unknown Clay - Fire (Refractory) Occurrence (MRDS - 10017491)
Unknown Clay - Fire (Refractory) Occurrence (MRDS - 10017492)
Unknown Clay - Fire (Refractory) Occurrence (MRDS - 10017580)
Unknown Clay - Fire (Refractory) Occurrence (MRDS - 10017693)
Unknown Clay - Fire (Refractory) Occurrence (MRDS - 10091334)
Unknown Clay - Fire (Refractory) Occurrence (MRDS - 10091336)
Unknown Clay - Fire (Refractory) Occurrence (MRDS - 10091345)
Unnamed Coal Mine
Unnamed Pumice (MRDS - 10240154)
Unnamed Uranium Occurrence (MRDS - 10011649)
Unnamed Uranium Occurrence (MRDS - 10011651)
Unnamed Uranium Occurrence (MRDS - 10011652)
Unnamed Uranium Occurrence (MRDS - 10011653)
Unnamed Uranium Occurrence (MRDS - 10011654)
Unnamed Uranium Occurrence (MRDS - 10011655)
Unnamed Uranium Occurrence (MRDS - 10011656)
Unnamed Uranium Occurrence (MRDS - 10011657)
Unnamed Uranium Occurrence (MRDS - 10011658)
Unnamed Uranium Occurrence (MRDS - 10011659)
Unnamed Uranium Occurrence (MRDS - 10011948)
Unnamed Uranium Occurrence (MRDS - 10011950)
Unnamed Uranium Occurrence (MRDS - 10011951)
Unnamed Uranium Occurrence (MRDS - 10011952)
Unnamed Uranium Occurrence (MRDS - 10011953)
Unnamed Uranium Occurrence (MRDS - 10011954)
Unnamed Uranium Occurrence (MRDS - 10090830)
Unnamed Uranium Occurrence (MRDS - 10090831)
Unnamed Uranium Occurrence (MRDS - 10090832)
Unnamed Uranium Occurrence (MRDS - 10090833)
Unnamed Uranium Occurrence (MRDS - 10090834)
Unnamed Uranium Occurrence (MRDS - 10090835)
Unnamed Uranium Occurrence (MRDS - 10090836)
Unnamed Uranium Occurrence (MRDS - 10090837)
Unnamed Uranium Occurrence (MRDS - 10090866)
Wild Horse Occurrence

Latitude: 40°37'58"N
Longitude: 104°34'14"W
Decimal Degree (lat, lon): 40.632777777778,-104.57055555556

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 Ba C Ca Cl Cr Cu Fe H Mg N Na Ni O S Si Ti 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AluniteAmorphousBaryteBlöditeCalciteChalcopyriteCorundumEpsomiteFeldsparGypsum
HexahydriteIronNoneNot in a structural groupPicromeritePyroxeneQuartzRocksaltSpinelTridymite

31 IMA Minerals at location:
Anhydrite  (*)Anorthite  (*)Augite  (*)Baryte  (*)Blödite  (*)
Calcite  (*)Chalcopyrite  (*)Chromite  (*)Diopside  (*)Epsomite  (*)
Eugsterite  (*)Gypsum  (*)Halite  (*)Hexahydrite  (*)Ilmenite  (*)
Iron  (*)Konyaite  (*)Löweite  (*)Mackinawite  (*)Mirabilite  (*)
Natrojarosite  (*)Nitratine  (*)Oldhamite  (*)Opal  (*)Pigeonite  (*)
Quartz  (*)Taenite  (*)Thénardite  (*)Tridymite  (*)Troilite  (*)
Wattevilleite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Anhydrite  (*)Not in a structural groupCa(SO4)11986421588
Anorthite  (*)FeldsparCa(Al2Si2O8)11986371036
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O611986372060
Baryte  (*)BaryteBa(SO4)3198644,198645,19864611547
Blödite  (*)BlöditeNa2Mg(SO4)2·4H2O1198654130
Calcite  (*)CalciteCa(CO3)3198642,198645,19864627770
Chalcopyrite  (*)ChalcopyriteCuFeS2119863727198
Chromite  (*)SpinelFe2+Cr2O42198626,1986373902
Diopside  (*)PyroxeneCaMgSi2O611986374135
Epsomite  (*)EpsomiteMg(SO4)·7H2O2198641,198654484
Eugsterite  (*)NoneNa4Ca(SO4)3·2H2O119865432
Gypsum  (*)GypsumCa(SO4)·2H2O3198641,198642,1986546890
Halite  (*)RocksaltNaCl2198641,1986541398
Hexahydrite  (*)HexahydriteMg(SO4)·6H2O1198654251
Ilmenite  (*)CorundumFe2+Ti4+O32198626,1986375433
Iron  (*)IronFe11986371089
Konyaite  (*)PicromeriteNa2Mg(SO4)2·5H2O2198641,19865420
Löweite  (*)NoneNa12Mg7(SO4)13·15H2O119865428
Mackinawite  (*)None(Fe,Ni)1+xS (x = 0-0.07)1198637451
Mirabilite  (*)NoneNa2(SO4)·10H2O1198654223
Natrojarosite  (*)AluniteNaFe3+3(SO4)2(OH)61198654254
Nitratine  (*)CalciteNa(NO3)119865491
Oldhamite  (*)RocksaltCaS119863758
Opal  (*)AmorphousSiO2·nH2O11986462994
Pigeonite  (*)Pyroxene(Mg,Fe,Ca)2Si2O61198637303
Quartz  (*)QuartzSiO22198638,19864361156
Taenite  (*)None(Ni,Fe)1198637703
Thénardite  (*)NoneNa2(SO4)2198641,198654299
Tridymite  (*)TridymiteSiO21198637458
Troilite  (*)NoneFeS11986371044
Wattevilleite  (*)NoneNa2Ca(SO4)2·4H2O (?)119865410



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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