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:
Continental Chief Mine, Dyer Mountain, Horseshoe District, Mosquito Range, Lake Co., Colorado, USA

Oldest recorded age at locality: 45.1
Youngest recorded age at locality: 39.9

mindat Locality ID: 46640
mindat URL: http://www.mindat.org/loc-46640.html

Tectonic Settings:

Total number of sublocalities beneath "Continental Chief Mine, Dyer Mountain, Horseshoe District, Mosquito Range, Lake Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 39°13'57"N
Longitude: 106°10'31"W
Decimal Degree (lat, lon): 39.2325,-106.17527777778

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 Ba C Ca Cu Fe H Mg Na O Pb S Sb Si Zn 

Elements from minerals reported directly at this locality: Ag Al Ba C Ca Cu Fe H Mg Na O Pb S Sb Si Zn 

Structural Groups for minerals in this locality: 
AragoniteBaryteCalciteClayCopperMalachiteNoneNot in a structural groupPyriteRocksalt
Smectite-vermiculiteSphaleriteTetrahedrite

16 IMA Minerals at location:
Aurichalcite  (*)Azurite  (*)Baryte  (*)Cerussite  (*)Dolomite  (*)
Galena  (*)Hemimorphite  (*)Hydrozincite  (*)Malachite  (*)Pyrite  (*)
Rosasite  (*)Sauconite  (*)Silver  (*)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
Aurichalcite  (*)None(Zn,Cu)5(CO3)2(OH)645.139.90919
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)245.139.905509
Baryte  (*)BaryteBa(SO4)45.139.9011547
Cerussite  (*)AragonitePb(CO3)45.139.904979
Dolomite  (*)NoneCaMg(CO3)245.139.909895
Galena  (*)RocksaltPbS45.139.9024243
Hemimorphite  (*)Not in a structural groupZn4(Si2O7)(OH)2·H2O45.139.901689
Hydrozincite  (*)NoneZn5(CO3)2(OH)645.139.901066
Malachite  (*)MalachiteCu2(CO3)(OH)245.139.9012537
Pyrite  (*)PyriteFeS245.139.9039462
Rosasite  (*)MalachiteCuZn(CO3)(OH)245.139.90454
Sauconite  (*)Clay Smectite-vermiculiteNa0.3Zn3(Si,Al)4O10(OH)2·4H2O45.139.9056
Silver  (*)CopperAg45.139.905186
Smithsonite  (*)CalciteZn(CO3)45.139.902473
Sphalerite  (*)SphaleriteZnS45.139.9021482
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S1345.139.905317



1 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
sedznpb-0048945.139.942.5±2.6     Yes  5991Sherman Mine (Sherman Tunnel; Leadville Corporation Mine; Day Mines; Hilltop Mine), Upper Iowa Gulch, Leadville District, Lake Co., Colorado, USAShermanSinger et al. (2009) USGSOFR2009-1252 


SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

All age data...

Other copyright data...