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:
Apex Mine (Rundberg Mine; Early Day Mine), Reese River District, Lander Co., Nevada, USA

Oldest recorded age at locality: 168
Youngest recorded age at locality: 2.58

mindat Locality ID: 29588
mindat URL: http://www.mindat.org/loc-29588.html

Tectonic Settings:

Total number of sublocalities beneath "Apex Mine (Rundberg Mine; Early Day Mine), Reese River District, Lander Co., Nevada, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 39°27'30"N
Longitude: 117°5'56"W
Decimal Degree (lat, lon): 39.458333333333,-117.09888888889
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 Cu Fe H K Mg Mn Na O P S Si U 

Elements from minerals reported directly at this locality: Al Ba C Ca Cu Fe H K Mg Mn Na O P S Si U 

Structural Groups for minerals in this locality: 
AluniteAmorphousAragoniteAutuniteBaryteCalciteChabaziteChalcopyriteDiasporeEpsomite
FluoriteGypsumMeta-autuniteNoneNot in a structural groupPyriteQuartzRutileStruviteSulphur
ZippeiteZircon

34 IMA Minerals at location:
Andersonite  (*)Apexite  (*)Aragonite  (*)Autunite  (*)Baryte  (*)
Bornite  (*)Calcite  (*)Čejkaite  (*)Chabazite-Ca  (*)Chalcopyrite  (*)
Coffinite  (*)Epsomite  (*)Gaylussite  (*)Goethite  (*)Graphite  (*)
Gypsum  (*)Hydroglauberite  (*)Jarosite  (*)Magnesiozippeite  (*)Meta-autunite  (*)
Metatorbernite  (*)Metauranocircite-I  (*)Natrozippeite  (*)Opal  (*)Pyrite  (*)
Pyrolusite  (*)Quartz  (*)Rutherfordine  (*)Sulphur  (*)Torbernite  (*)
Uraninite  (*)Uranocircite-II  (*)Uranopilite  (*)Zippeite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Andersonite  (*)Not in a structural groupNa2Ca(UO2)(CO3)3·5-6H2O662.58047
Apexite  (*)StruviteNaMg(PO4)·9H2O0001
Aragonite  (*)AragoniteCa(CO3)1682.5803250
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O662.5801272
Baryte  (*)BaryteBa(SO4)1682.58011547
Bornite  (*)NoneCu5FeS41682.5805516
Calcite  (*)CalciteCa(CO3)1682.58027770
Čejkaite  (*)NoneNa4(UO2)(CO3)3662.5809
Chabazite-Ca  (*)ChabaziteCa2[Al4Si8O24]·13H2O1682.580310
Chalcopyrite  (*)ChalcopyriteCuFeS21682.58027198
Coffinite  (*)ZirconU(SiO4)·nH2O662.580566
Epsomite  (*)EpsomiteMg(SO4)·7H2O1682.580484
Gaylussite  (*)NoneNa2Ca(CO3)2·5H2O1682.58057
Goethite  (*)DiasporeFeO(OH)1682.5807437
Graphite  (*)NoneC1682.5802812
Gypsum  (*)GypsumCa(SO4)·2H2O1682.5806890
Hydroglauberite  (*)NoneNa10Ca3(SO4)8·6H2O1682.58016
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)61682.5802228
Magnesiozippeite  (*)ZippeiteMg(UO2)2(SO4)O2·3.5H2O00014
Meta-autunite  (*)Meta-autuniteCa(UO2)2(PO4)2·6H2O662.580388
Metatorbernite  (*)NoneCu(UO2)2(PO4)2·8H2O662.580443
Metauranocircite-I  (*)NoneBa(UO2)2(PO4)2·6H2O662.58038
Natrozippeite  (*)ZippeiteNa5(UO2)8(SO4)4O5(OH)3·12H2O662.58041
Opal  (*)AmorphousSiO2·nH2O1682.5802994
Pyrite  (*)PyriteFeS21682.58039462
Pyrolusite  (*)RutileMnO21682.5803106
Quartz  (*)QuartzSiO21682.58061156
Rutherfordine  (*)None(UO2)(CO3)662.58058
Sulphur  (*)SulphurS1682.5802045
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O662.5801059
Uraninite  (*)FluoriteUO2662.5802718
Uranocircite-II  (*)NoneBa(UO2)2(PO4)2·10H2O662.58089
Uranopilite  (*)None(UO2)6(SO4)O2(OH)6·14H2O662.58094
Zippeite  (*)ZippeiteK2[(UO2)4(SO4)2O2(OH)2](H2O)4662.580175


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Giersdorf_00000743The Apex Mine is the largest Uranium mine in the state of Nevada and is host to several U minerals which are exclusive to it on the Western Hemisphere
Giersdorf_00000744The Apex Mine is the largest Uranium mine in the state of Nevada and is host to several U minerals which are exclusive to it on the Western Hemisphere


2 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_00000743662.58Tertiary      Andersonite, Autunite, Cejkaite, Meta-autunite, Metatorbernite, Rutherfordine, Torbernite, Uranopilite, ZippeiteU29588Apex Mine (Rundberg Mine; Early Day Mine), Reese River District, Lander Co., Nevada, USAApex MineJensen et al. (2012)10.1080/00357529.2012.676847RM87_270The uranium is interpreted to have been derived from the Tertiary volcanism associated with emplacement of the leucocratic dikes, which also provided heat flow and uranium-enriched fluids.
Giersdorf_00000744168145168-145        29588Apex Mine (Rundberg Mine; Early Day Mine), Reese River District, Lander Co., Nevada, USAApex MineJensen et al. (2012)10.1080/00357529.2012.676847RM87_270Age of porphyritic quartz monzonite intrusion

SampleSource LocalityReference URL
R060374Apex Mine (Rundberg Mine; Early Day Mine), Reese River District, Lander Co., Nevada, USAhttps://rruff.info/R060374

All locality data graciously provided by mindat.org

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