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:
Commonwealth Mine (Pearce Mine; Silver Ware Mine; Brockman Mine; Smith Mine; Rinaud Mine; Ritter Mine; Eisenhart Vein), Pearce, Pearce District, Pearce Hills, Sulphur Springs Valley, Cochise Co., Arizona, USA

Oldest recorded age at locality: 0
Youngest recorded age at locality: 0

mindat Locality ID: 10260
mindat URL: http://www.mindat.org/loc-10260.html

Tectonic Settings:

Total number of sublocalities beneath "Commonwealth Mine (Pearce Mine; Silver Ware Mine; Brockman Mine; Smith Mine; Rinaud Mine; Ritter Mine; Eisenhart Vein), Pearce, Pearce District, Pearce Hills, Sulphur Springs Valley, Cochise Co., Arizona, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 31°54'4"N
Longitude: 109°48'56"W
Decimal Degree (lat, lon): 31.901111111111,-109.81555555556
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 Br C Ca Cl Cu F Fe H I K Mn Mo O Pb S Sb Si 

Elements from minerals reported directly at this locality: Ag Al As Au Br C Ca Cl Cu F Fe H I K Mn Mo O Pb S Sb Si Zn 

Structural Groups for minerals in this locality: 
AcanthiteAdeliteAllophaneAluniteApatiteCalciteChalcopyriteClayCopperCorundum
FluoriteGypsumKaoliniteMicaMolybdeniteNonePyriteQuartzRocksaltScheelite
TetrahedriteWurtzite

28 IMA Minerals at location:
Acanthite  (*)Alunite  (*)Bromargyrite  (*)Calcite  (*)Chalcocite  (*)
Chalcopyrite  (*)Chlorargyrite  (*)Chrysocolla  (*)Conichalcite  (*)Fluorite  (*)
Galena  (*)Gold  (*)Gypsum  (*)Hematite  (*)Iodargyrite  (*)
Jarosite  (*)Kaolinite  (*)Mimetite  (*)Molybdenite  (*)Muscovite  (*)
Proustite  (*)Pyrite  (*)Quartz  (*)Rhodochrosite  (*)Siderite  (*)
Silver  (*)Tetrahedrite-(Zn)  (*)Wulfenite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Acanthite  (*)AcanthiteAg2S0002793
Alunite  (*)NoneKAl3(SO4)2(OH)6000966
Bromargyrite  (*)RocksaltAgBr000227
Calcite  (*)CalciteCa(CO3)00027770
Chalcocite  (*)NoneCu2S0005707
Chalcopyrite  (*)ChalcopyriteCuFeS200027198
Chlorargyrite  (*)RocksaltAgCl0001382
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O0003531
Conichalcite  (*)AdeliteCaCu(AsO4)(OH)000363
Fluorite  (*)FluoriteCaF20009617
Galena  (*)RocksaltPbS00024243
Gold  (*)CopperAu00030554
Gypsum  (*)GypsumCa(SO4)·2H2O0006890
Hematite  (*)CorundumFe2O300014640
Iodargyrite  (*)WurtziteAgI000180
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)60002228
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)40005591
Mimetite  (*)ApatitePb5(AsO4)3Cl0001107
Molybdenite  (*)MolybdeniteMoS20005800
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)200017380
Proustite  (*)NoneAg3AsS3000733
Pyrite  (*)PyriteFeS200039462
Quartz  (*)QuartzSiO200061156
Rhodochrosite  (*)CalciteMn(CO3)0001711
Siderite  (*)CalciteFe(CO3)0006417
Silver  (*)CopperAg0005186
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S130005317
Wulfenite  (*)ScheelitePbMoO40001655


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Michelle_554Near-surface occurrence. Recently forming oxalate associated with cave deposits, in Cochise County, Arizona.


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
Michelle_55400Recent Age of whewellite mineralizationhigh   YesWhewellite 15570Cochise Co., Arizona, USACochise CountyHofmann and Bernasconi (1998)10.1016/S0009-2541(98)00043-6CG149_127Described as "recent cave deposits."

SampleSource LocalityReference URL

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