Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

We are grateful to NASA for the funding of this effort.




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:
Challis, Bay Horse District, Custer Co., Idaho, USA

Oldest recorded age at locality: 55
Youngest recorded age at locality: 40

mindat Locality ID: 16147
mindat URL: http://www.mindat.org/loc-16147.html

Tectonic Settings:

Total number of sublocalities beneath "Challis, Bay Horse District, Custer Co., Idaho, USA": 11
Total number of bottom-level sublocalities: 10

Number of Child Localities: 10
Child Localities:
2nd Street
Antelope Flats
Cachelot Mine (Chalspar Mine; Marantha Mine; Holterman; Kraken Hill Mine)
Deer Creek
K-7 Tunnel
Morgan Creek
Rat's Nest Claim (Rat's Nest Mine)
Spar Canyon
Thompson Creek Mine (Tungsten Jim Mine; Salmon River Scheelite Mine)
Unnamed Pit

Latitude: 44°27'4"N
Longitude: 114°12'58"W
Decimal Degree (lat, lon): 44.451111111111,-114.21611111111

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 B Ba C Ca Cu F Fe H K Li Mg Mo Na O Pb S Si W Zn 

Elements from minerals reported directly at this locality: Al Ca H Na O Si 

Structural Groups for minerals in this locality: 
AllophaneAluniteAmorphousAnalcimeAragoniteBaryteBrochantiteCalciteCaledoniteChalcopyrite
ClayFeldsparFluoriteGarnetGypsumHeulanditeLinariteMalachiteMicaMolybdenite
MordeniteNatroliteNickelineNoneNot in a structural groupPyritePyroxeneQuartzRocksaltScheelite
Smectite-vermiculiteStilbiteTourmaline

39 IMA Minerals at location:
Albite  (*)Analcime  (*)Andradite  (*)Anglesite  (*)Aragonite  (*)
Augite  (*)Baryte  (*)Brochantite  (*)Calcite  (*)Caledonite  (*)
Cerussite  (*)Chalcopyrite  (*)Chrysocolla  (*)Elbaite  (*)Fluorite  (*)
Galena  (*)Grossular  (*)Gypsum  (*)Heulandite-Ca  (*)Heulandite-Na  (*)
Jarosite  (*)Laumontite  (*)Linarite  (*)Malachite  (*)Mesolite  (*)
Microcline  (*)Molybdenite  (*)Montmorillonite  (*)Mordenite  (*)Muscovite  (*)
Opal  (*)Orthoclase  (*)Powellite  (*)Pyrite  (*)Pyrrhotite  (*)
Quartz  (*)Scheelite  (*)Smithsonite  (*)Stilbite-Ca  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)554012067598803
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O55403206752,206757,2067601627
Andradite  (*)GarnetCa3Fe3+2(SiO4)3554012067591534
Anglesite  (*)BarytePb(SO4)554012067552734
Aragonite  (*)AragoniteCa(CO3)554012067533250
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O6554012067572060
Baryte  (*)BaryteBa(SO4)5540120675811547
Brochantite  (*)BrochantiteCu4(SO4)(OH)6554012067551633
Calcite  (*)CalciteCa(CO3)55405206752,206757,206758,206759,20676027770
Caledonite  (*)CaledoniteCu2Pb5(SO4)3(CO3)(OH)655401206755359
Cerussite  (*)AragonitePb(CO3)554012067554979
Chalcopyrite  (*)ChalcopyriteCuFeS25540120675527198
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O554012067553531
Elbaite  (*)TourmalineNa(Al1.5Li1.5)Al6(Si6O18)(BO3)3(OH)3(OH)55401206759520
Fluorite  (*)FluoriteCaF2554012067539617
Galena  (*)RocksaltPbS5540120675524243
Grossular  (*)GarnetCa3Al2(SiO4)3554012067591544
Gypsum  (*)GypsumCa(SO4)·2H2O554012067596890
Heulandite-Ca  (*)Heulandite(Ca,Na,K)5(Si27Al9)O72·26H2O55401206757246
Heulandite-Na  (*)Heulandite(Na,Ca,K)6(Si,Al)36O72·22H2O55403206754,206756,20676018
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)6554012067592228
Laumontite  (*)Not in a structural groupCaAl2Si4O12·4H2O554012067571271
Linarite  (*)LinariteCuPb(SO4)(OH)255401206755987
Malachite  (*)MalachiteCu2(CO3)(OH)25540120675512537
Mesolite  (*)NatroliteNa2Ca2(Si9Al6)O30·8H2O55400425
Microcline  (*)FeldsparK(AlSi3O8)554012067594924
Molybdenite  (*)MolybdeniteMoS2554012067595800
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O554012067591508
Mordenite  (*)Mordenite(Na2,Ca,K2)4(Al8Si40)O96·28H2O55402206757,206760405
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)25540120675917380
Opal  (*)AmorphousSiO2·nH2O55402206757,2067582994
Orthoclase  (*)FeldsparK(AlSi3O8)554012067592349
Powellite  (*)ScheeliteCa(MoO4)55401206759494
Pyrite  (*)PyriteFeS25540120675939462
Pyrrhotite  (*)NickelineFe7S8554012067599056
Quartz  (*)QuartzSiO255407206752,206753,206755,206757,206758,206759,20676061156
Scheelite  (*)ScheeliteCa(WO4)554012067594894
Smithsonite  (*)CalciteZn(CO3)554012067552473
Stilbite-Ca  (*)StilbiteNaCa4(Si27Al9)O72·28H2O55401206757268



Locality Notes from all Ages at Locality:
Age IDLocality Notes
Giersdorf_00000283Subduction-related Volcanic zone in Central Idaho


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
Giersdorf_00000283554055-40K-Ar       16147Challis, Bay Horse District, Custer Co., Idaho, USAChallis VolcanicsMoye et al. (1988) GGCSI27_87Age of the Challis Volcanic field


SampleSource LocalityReference URL
R040140Challis, Bay Horse District, Custer Co., Idaho, USAhttps://rruff.info/R040140
R050097Rat's Nest Claim (Rat's Nest Mine), Challis, Bay Horse District, Custer Co., Idaho, USAhttps://rruff.info/R050097
R050647Rat's Nest Claim (Rat's Nest Mine), Challis, Bay Horse District, Custer Co., Idaho, USAhttps://rruff.info/R050647


All locality data graciously provided by mindat.org

All age data...

Other copyright data...