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:
Critchell Area, Jefferson Co., Colorado, USA


mindat Locality ID: 26762
mindat URL: http://www.mindat.org/loc-26762.html

Tectonic Settings:

Total number of sublocalities beneath "Critchell Area, Jefferson Co., Colorado, USA": 6
Total number of bottom-level sublocalities: 6

Number of Child Localities: 6
Child Localities:
Billiken And Black Knight Lodes Occurrence
Cook Property
Critchell Mine
Kennedy Gulch Magnetite Deposit
Platt Canyon
Qualla And Young Sampson Lodes Occurrence

Latitude: 39°28'36"N
Longitude: 105°12'40"W
Decimal Degree (lat, lon): 39.476666666667,-105.21111111111
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: C Ca Cu F Fe H Mo O P Pb S Si Ti U Zn 

Elements from minerals reported directly at this locality: Ca F Mo O P S Si Ti 

Structural Groups for minerals in this locality: 
ApatiteAutuniteBrochantiteChalcopyriteCovelliteFluoriteMalachiteMolybdeniteNoneNot in a structural group
PyriteRocksaltSchoepiteSphaleriteSpinelTitanite

21 IMA Minerals at location:
Autunite  (*)Azurite  (*)Becquerelite  (*)Bornite  (*)Brochantite  (*)
Chalcopyrite  (*)Covellite  (*)Cuprite  (*)Fluorapatite  (*)Fourmarierite  (*)
Galena  (*)Magnetite  (*)Malachite  (*)Molybdenite  (*)Pyrite  (*)
Sphalerite  (*)Tenorite  (*)Titanite  (*)Torbernite  (*)Uraninite  (*)
Uranophane-α  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O11905961272
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)211905975509
Becquerelite  (*)NoneCa(UO2)6O4(OH)6·8H2O119059692
Bornite  (*)NoneCu5FeS411905965516
Brochantite  (*)BrochantiteCu4(SO4)(OH)611905971633
Chalcopyrite  (*)ChalcopyriteCuFeS23190596,190597,19060127198
Covellite  (*)CovelliteCuS11905974165
Cuprite  (*)Not in a structural groupCu2O11905962970
Fluorapatite  (*)ApatiteCa5(PO4)3F02740
Fourmarierite  (*)SchoepitePb1-xO3-2x(UO2)4(OH)4+2x·4H2O119059661
Galena  (*)RocksaltPbS2190597,19060124243
Magnetite  (*)SpinelFe2+Fe3+2O42190596,19059914899
Malachite  (*)MalachiteCu2(CO3)(OH)22190597,19060112537
Molybdenite  (*)MolybdeniteMoS205800
Pyrite  (*)PyriteFeS2119059639462
Sphalerite  (*)SphaleriteZnS2190597,19060121482
Tenorite  (*)NoneCuO11905961101
Titanite  (*)TitaniteCaTi(SiO4)O04899
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O11905961059
Uraninite  (*)FluoriteUO211905962718
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O1190596890


No ages have been assigned to this locality yet.
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