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:
Silver Bell Mts, Pima Co., Arizona, USA

Oldest recorded age at locality: 69
Youngest recorded age at locality: 62.9

mindat Locality ID: 31322
mindat URL: http://www.mindat.org/loc-31322.html

Tectonic Settings:

Total number of sublocalities beneath "Silver Bell Mts, Pima Co., Arizona, USA": 101
Total number of bottom-level sublocalities: 96

Number of Child Localities: 1
Child Localities:
Silver Bell District

Latitude: 32°25'7"N
Longitude: 111°32'49"W
Decimal Degree (lat, lon): 32.418611111111,-111.54694444444
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 As Au B Ba C Ca Cl Cu F Fe H K Mg Mo Na O P Pb S Si Ti U V Zn Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AcanthiteAllophaneAluniteAmorphousAmphiboleAndalusiteApatiteAragoniteBaryteBrochantite
CalciteCaledoniteChalcanthiteChalcopyriteClayClinozoisiteCopperCorundumCovelliteDescloizite
DiasporeEpidoteEpsomiteFeldsparFluoriteGarnetGypsumKaoliniteMalachiteMelanterite
MicaMolybdeniteNoneNot in a structural groupPhenakitePyritePyroxeneQuartzRocksaltRutile
ScheeliteSerpentineSmectite-vermiculiteSphaleriteSpinelTitaniteTurquoiseWollastoniteZircon

71 IMA Minerals at location:
Acanthite  (*)Actinolite  (*)Allophane  (*)Alunite  (*)Andradite  (*)
Anglesite  (*)Aragonite  (*)Azurite  (*)Baryte  (*)Bayldonite  (*)
Bornite  (*)Brochantite  (*)Cacoxenite  (*)Calcite  (*)Caledonite  (*)
Cerussite  (*)Chalcanthite  (*)Chalcocite  (*)Chalcopyrite  (*)Chlorargyrite  (*)
Chrysocolla  (*)Copper  (*)Covellite  (*)Cuprite  (*)Descloizite  (*)
Diopside  (*)Dioptase  (*)Epidote  (*)Epsomite  (*)Fluorite  (*)
Galena  (*)Goethite  (*)Gold  (*)Goslarite  (*)Grossular  (*)
Gypsum  (*)Hedenbergite  (*)Hematite  (*)Halloysite-10Å  (*)Jarosite  (*)
Kaolinite  (*)Leucosphenite  (*)Libethenite  (*)Lizardite  (*)Magnetite  (*)
Malachite  (*)Melanterite  (*)Metatorbernite  (*)Mimetite  (*)Molybdenite  (*)
Montmorillonite  (*)Muscovite  (*)Opal  (*)Orthoclase  (*)Pseudomalachite  (*)
Pyrite  (*)Quartz  (*)Rutile  (*)Siderite  (*)Smithsonite  (*)
Sphalerite  (*)Tenorite  (*)Titanite  (*)Torbernite  (*)Tremolite  (*)
Turquoise  (*)Vanadinite  (*)Willemite  (*)Wollastonite  (*)Wulfenite  (*)
Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Acanthite  (*)AcanthiteAg2S696611447322793
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)263.562.911447423419
Allophane  (*)AllophaneAl2O3(SiO2)1.3-2.0·2.5-3.0H2O63.562.91144742470
Alunite  (*)NoneKAl3(SO4)2(OH)66962.93144742,144744,144746966
Andradite  (*)GarnetCa3Fe3+2(SiO4)3696611447191534
Anglesite  (*)BarytePb(SO4)696611447502734
Aragonite  (*)AragoniteCa(CO3)63.562.911447423250
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)26962.95144732,144740,144742,144750,1447825509
Baryte  (*)BaryteBa(SO4)6962.911144716,144719,144733,144740,144742,144746,144750,144752,144757,144760,14476111547
Bayldonite  (*)NoneCu3PbO(AsO3OH)2(OH)269661144750172
Bornite  (*)NoneCu5FeS469664144716,144719,144740,1447575516
Brochantite  (*)BrochantiteCu4(SO4)(OH)669662144716,1447431633
Cacoxenite  (*)NoneFe3+24AlO6(PO4)17(OH)12·75H2O6962.92144743,144744280
Calcite  (*)CalciteCa(CO3)6962.98144719,144742,144750,144757,144761,144766,144810,14481127770
Caledonite  (*)CaledoniteCu2Pb5(SO4)3(CO3)(OH)663.562.91144742359
Cerussite  (*)AragonitePb(CO3)6962.94144716,144732,144743,1447504979
Chalcanthite  (*)ChalcanthiteCu(SO4)·5H2O6962.93144716,144719,144742925
Chalcocite  (*)NoneCu2S696624144716,144739,144742,144743,144744,144746,144763,144767,144769,144772,144773,144776,144777,144778,144785,144786,144787,144788,144789,144791,144793,144803,144806,1448145707
Chalcopyrite  (*)ChalcopyriteCuFeS2696626144719,144727,144732,144739,144740,144742,144743,144744,144746,144757,144759,144763,144769,144770,144780,144786,144795,144796,144799,144800,144805,144806,144807,144808,144809,14481427198
Chlorargyrite  (*)RocksaltAgCl6962.911447431382
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O696624144716,144739,144743,144750,144754,144758,144759,144763,144764,144765,144767,144769,144771,144774,144775,144776,144777,144778,144781,144782,144794,144795,144798,1448123531
Copper  (*)CopperCu69662144742,1447433846
Covellite  (*)CovelliteCuS696611447674165
Cuprite  (*)Not in a structural groupCu2O69665144740,144742,144743,144744,1447502970
Descloizite  (*)DescloizitePbZn(VO4)(OH)69661144750378
Diopside  (*)PyroxeneCaMgSi2O663.562.911447424135
Dioptase  (*)NoneCuSiO3·H2O69661144750164
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)6962.93144719,144742,1447978173
Epsomite  (*)EpsomiteMg(SO4)·7H2O6962.91144743484
Fluorite  (*)FluoriteCaF26962.99144716,144740,144742,144746,144747,144750,144758,144761,1448129617
Galena  (*)RocksaltPbS6962.914144716,144719,144727,144732,144740,144742,144750,144758,144761,144808,144809,144812,144813,14481524243
Goethite  (*)DiasporeFeO(OH)63.562.911447427437
Gold  (*)CopperAu69662144719,14475730554
Goslarite  (*)EpsomiteZn(SO4)·7H2O6962.91144716188
Grossular  (*)GarnetCa3Al2(SiO4)3696611447191544
Gypsum  (*)GypsumCa(SO4)·2H2O63.562.911447426890
Hedenbergite  (*)PyroxeneCaFe2+Si2O669661144719741
Hematite  (*)CorundumFe2O36962.94144739,144742,144746,14475014640
Halloysite-10Å  (*)Clay KaoliniteAl2Si2O5(OH)4·2H2O63.562.9114474262
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)669663144742,144744,1447942228
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)46962.92144743,1448085591
Leucosphenite  (*)NoneNa4BaTi2B2Si10O3063.562.9114474219
Libethenite  (*)AndalusiteCu2(PO4)(OH)63.562.91144742234
Lizardite  (*)Serpentine ClayMg3Si2O5(OH)46962.91144743359
Magnetite  (*)SpinelFe2+Fe3+2O46966114471914899
Malachite  (*)MalachiteCu2(CO3)(OH)26962.923144739,144740,144742,144750,144757,144759,144762,144763,144764,144765,144767,144771,144772,144774,144784,144792,144793,144800,144801,144802,144805,144812,14481512537
Melanterite  (*)MelanteriteFe(SO4)·7H2O6962.91144743915
Metatorbernite  (*)NoneCu(UO2)2(PO4)2·8H2O63.562.91144742443
Mimetite  (*)ApatitePb5(AsO4)3Cl696611447501107
Molybdenite  (*)MolybdeniteMoS26962.97144736,144742,144743,144746,144805,144806,1448075800
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O696611447511508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)26962.919144742,144751,144757,144758,144770,144772,144777,144788,144791,144796,144798,144799,144800,144806,144807,144808,144809,144814,14481517380
Opal  (*)AmorphousSiO2·nH2O63.562.911447422994
Orthoclase  (*)FeldsparK(AlSi3O8)696611447512349
Pseudomalachite  (*)NoneCu5(PO4)2(OH)469661144744369
Pyrite  (*)PyriteFeS2696636144716,144719,144727,144739,144743,144744,144746,144754,144757,144758,144759,144760,144761,144764,144766,144770,144772,144773,144777,144778,144788,144789,144791,144794,144795,144796,144799,144800,144804,144806,144807,144808,144809,144813,144814,14481539462
Quartz  (*)QuartzSiO26962.94144743,144750,144755,14481061156
Rutile  (*)RutileTiO2696611447515614
Siderite  (*)CalciteFe(CO3)6962.911447166417
Smithsonite  (*)CalciteZn(CO3)6962.92144716,1447432473
Sphalerite  (*)SphaleriteZnS6962.910144716,144719,144727,144740,144742,144809,144812,144813,144814,14481521482
Tenorite  (*)NoneCuO6962.92144742,1447951101
Titanite  (*)TitaniteCaTi(SiO4)O696611447514899
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O69662144743,1447441059
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)263.562.911447422562
Turquoise  (*)TurquoiseCuAl6(PO4)4(OH)8·4H2O69665144743,144744,144787,144788,144791484
Vanadinite  (*)ApatitePb5(VO4)3Cl69661144813605
Willemite  (*)PhenakiteZn2SiO469661144750303
Wollastonite  (*)WollastoniteCaSiO36962.93144716,144719,1447421247
Wulfenite  (*)ScheelitePbMoO46962.96144716,144739,144742,144750,144758,1448131655
Zircon  (*)ZirconZr(SiO4)696611447515251


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
PorphCu-00087696669-66      Actinolite, Chalcanthite, Chalcocite, Chalcopyrite, Chrysocolla, Copper, Cuprite, Diopside, Epidote, Jarosite, Malachite, Molybdenite, Pyrite, Tenorite, WollastoniteCu31299Silver Bell District, Silver Bell Mts, Pima Co., Arizona, USASilver BellSinger et al. (2008) USGSOFR2008_1155 
Mo-0005363.562.963.2±0.3Re-Os molybdeniteSB-1  MolybdeniteMolybdeniteMo3374Silver Bell Mine, Mineral Mountain, Silver Bell District, Silver Bell Mts, Pima Co., Arizona, USASilverbellBarra et al. (2005)10.2113/gsecongeo.100.8.1605EG100_1605 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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