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:
Middle Pass District, Dragoon Mts, Cochise Co., Arizona, USA

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

mindat Locality ID: 31225
mindat URL: http://www.mindat.org/loc-31225.html

Tectonic Settings:

Total number of sublocalities beneath "Middle Pass District, Dragoon Mts, Cochise Co., Arizona, USA": 62
Total number of bottom-level sublocalities: 50

Number of Child Localities: 44
Child Localities:
Arizona Group
Black Diamond Mine (Englander Mine; Black Diamond Claim)
Black Diamond Peak
Burrito De Fierro Mine (Ligier Mine; Perevill & Danvers Mine)
Christmas Mine (Dragoon Mine; Christmas Prospect)
Cobre Loma Mine (Cobre Loma Prospect; Cobre Loma Pit)
Cochise Stronghold
Cochise Stronghold Area
Dragoon Pass
Ella Prospect
Emma Adit (Coronado NF Dragoon Unit)
Escapule Mine Group (Escapule Mine; Joe Escapule Mine; Moonlight Group; Northside Group; Garnet Group; Arizona Group)
Gordon Camp
Gordon Spring Prospects
Grant Group
Lloyd And Laverns Prospect
Loma Linda Mine (Loma Linda Pit)
Lulty Prospect
McDaniel's Cut Prospect
Middlemarch Canyon
Middlemarch Mine (Missouri Mine; Missouri Shaft; Morning Glory Shaft)
Middlemarch Pass
Middlemarch Pass Area
Muheim Mine (Zinc Basin Mine; White Metal Mine; White Tail Mine; Grant Group)
Naoe Claims (Fourr Claims; Good Hope Mine; Barnes Mine)
Pittsburgh And Manhattan Patents
Rainbow Mine
Sorin Camp Mine
St. Francis Mine (Granite Bluff Claims; Coronado Marble Co. Property)
The Pit Prospect
Unnamed Adit
Unnamed Ag Prospect
Unnamed Cu-Ag Prospect
Unnamed Cu-Zn-Au-As Prospect
Unnamed Cu-Zn-Pb-Ag Prospect
Unnamed Zn Prospect (1)
Unnamed Zn Prospect (2)
Unnamed Zn Prospect (3)
Unnamed Zn Prospect (4)
Unnamed Zn Prospect/adit
Unnamed Zn-Au-Ag Prospect
Unnamed Zn-Cu Prospect (3)
Unnamed Zn-Cu Prospect [1]
Unnamed Zn-Cu-Ag Prospect

Latitude: 31°53'20"N
Longitude: 109°58'5"W
Decimal Degree (lat, lon): 31.888888888889,-109.96805555556

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 Be Bi C Ca Cd Cl Cu F Fe H K Mg Mn Mo Na O Pb S Se Si Ti V W Zn Zr 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AcanthiteAllophaneAluniteAmorphousAmphiboleApatiteAragoniteBaryteBerylBrochantite
CalciteCaledoniteCancrinite-sodaliteChalcanthiteChalcopyriteChloriteClayClinozoisiteCopperCorundum
CovelliteDevillineDiasporeEpidoteFeldsparFluoriteGarnetGypsumIlvaiteKobellite
MalachiteMicaMolybdeniteNickelineNoneNot in a structural groupPhenakitePrehnitePyritePyroxene
QuartzRocksaltRutileScapoliteScheeliteSerpentineSodaliteSphaleriteSpinelTitanite
VesuvianiteWollastoniteWurtziteZircon

76 IMA Minerals at location:
Acanthite  (*)Actinolite  (*)Allophane  (*)Andradite  (*)Anglesite  (*)
Augite  (*)Aurichalcite  (*)Azurite  (*)Baryte  (*)Beryl  (*)
Bornite  (*)Brochantite  (*)Calcite  (*)Caledonite  (*)Cerussite  (*)
Chalcanthite  (*)Chalcocite  (*)Chalcomenite  (*)Chalcopyrite  (*)Chamosite  (*)
Chlorargyrite  (*)Chrysocolla  (*)Chrysotile  (*)Clinochlore  (*)Clinozoisite  (*)
Covellite  (*)Diopside  (*)Dolomite  (*)Eclarite  (*)Epidote  (*)
Ferrimolybdite  (*)Fluorite  (*)Galena  (*)Goethite  (*)Greenockite  (*)
Grossular  (*)Gypsum  (*)Hedenbergite  (*)Helvine  (*)Hematite  (*)
Hemimorphite  (*)Hydrozincite  (*)Ilvaite  (*)Jarosite  (*)Leadhillite  (*)
Magnetite  (*)Malachite  (*)Marialite  (*)Microcline  (*)Molybdenite  (*)
Muscovite  (*)Opal  (*)Orthoclase  (*)Phlogopite  (*)Powellite  (*)
Prehnite  (*)Pyrite  (*)Pyrrhotite  (*)Quartz  (*)Rosasite  (*)
Rutile  (*)Scheelite  (*)Serpierite  (*)Silver  (*)Smithsonite  (*)
Sphalerite  (*)Titanite  (*)Tremolite  (*)Vanadinite  (*)Vesuvianite  (*)
Willemite  (*)Wittite  (*)Wollastonite  (*)Wulfenite  (*)Zircon  (*)
Zoisite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Acanthite  (*)AcanthiteAg2S003136807,136809,1368302793
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)20011368113419
Allophane  (*)AllophaneAl2O3(SiO2)1.3-2.0·2.5-3.0H2O001136809470
Andradite  (*)GarnetCa3Fe3+2(SiO4)3003136811,136831,1368421534
Anglesite  (*)BarytePb(SO4)005136809,136810,136830,136832,1368472734
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O60011368422060
Aurichalcite  (*)None(Zn,Cu)5(CO3)2(OH)6003136809,136810,136830919
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)2006136809,136810,136811,136843,136853,1368665509
Baryte  (*)BaryteBa(SO4)003136809,136810,13684411547
Beryl  (*)BerylBe3Al2Si6O18003136815,136819,1368324286
Bornite  (*)NoneCu5FeS4004136807,136812,136813,1368375516
Brochantite  (*)BrochantiteCu4(SO4)(OH)60011368111633
Calcite  (*)CalciteCa(CO3)0010136809,136810,136811,136813,136815,136822,136830,136832,136843,13685627770
Caledonite  (*)CaledoniteCu2Pb5(SO4)3(CO3)(OH)6002136809,136811359
Cerussite  (*)AragonitePb(CO3)006136809,136811,136812,136830,136832,1368424979
Chalcanthite  (*)ChalcanthiteCu(SO4)·5H2O001136842925
Chalcocite  (*)NoneCu2S0011368425707
Chalcomenite  (*)NoneCu(Se4+O3)·2H2O002136840,13684340
Chalcopyrite  (*)ChalcopyriteCuFeS20014136807,136809,136810,136811,136812,136813,136815,136828,136830,136832,136837,136842,136843,13685327198
Chamosite  (*)Chlorite Clay(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8002136809,136842577
Chlorargyrite  (*)RocksaltAgCl0011368301382
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O002136811,1368663531
Chrysotile  (*)Serpentine ClayMg3Si2O5(OH)4001136815951
Clinochlore  (*)Chlorite ClayMg5Al(AlSi3O10)(OH)80011368531756
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)004136810,136818,136820,1368421025
Covellite  (*)CovelliteCuS003136809,136842,1368434165
Diopside  (*)PyroxeneCaMgSi2O6006136811,136813,136815,136818,136820,1368534135
Dolomite  (*)NoneCaMg(CO3)20011368099895
Eclarite  (*)Kobellite(Cu,Fe)Pb9Bi12S28002136815,13683118
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)009136811,136813,136815,136832,136841,136842,136843,136853,1368568173
Ferrimolybdite  (*)NoneFe3+2(Mo6+O4)3·7H2O001136815345
Fluorite  (*)FluoriteCaF2004136810,136816,136832,1368449617
Galena  (*)RocksaltPbS0011136807,136809,136810,136812,136815,136828,136830,136832,136835,136842,13685324243
Goethite  (*)DiasporeFeO(OH)005136809,136811,136822,136830,1368427437
Greenockite  (*)WurtziteCdS001136832717
Grossular  (*)GarnetCa3Al2(SiO4)3005136810,136813,136842,136846,1368561544
Gypsum  (*)GypsumCa(SO4)·2H2O004136809,136832,136842,1368536890
Hedenbergite  (*)PyroxeneCaFe2+Si2O6003136831,136832,136844741
Helvine  (*)Sodalite Cancrinite-sodaliteBe3Mn2+4(SiO4)3S003136815,136832,136856237
Hematite  (*)CorundumFe2O30011136807,136809,136811,136815,136830,136831,136832,136835,136842,136853,13686614640
Hemimorphite  (*)Not in a structural groupZn4(Si2O7)(OH)2·H2O003136830,136832,1368471689
Hydrozincite  (*)NoneZn5(CO3)2(OH)6004136809,136810,136832,1368421066
Ilvaite  (*)IlvaiteCaFe3+Fe2+2O(Si2O7)(OH)002136807,136844197
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)60011368422228
Leadhillite  (*)NonePb4(SO4)(CO3)2(OH)2001136830265
Magnetite  (*)SpinelFe2+Fe3+2O4005136807,136811,136813,136816,13683114899
Malachite  (*)MalachiteCu2(CO3)(OH)2009136809,136811,136812,136830,136842,136843,136853,136856,13686612537
Marialite  (*)ScapoliteNa4Al3Si9O24Cl001136820139
Microcline  (*)FeldsparK(AlSi3O8)0011368164924
Molybdenite  (*)MolybdeniteMoS2002136811,1368155800
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2003136809,136811,13684117380
Opal  (*)AmorphousSiO2·nH2O003136809,136832,1368562994
Orthoclase  (*)FeldsparK(AlSi3O8)002136811,1368412349
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)20011368422273
Powellite  (*)ScheeliteCa(MoO4)002136810,136832494
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)20011368421898
Pyrite  (*)PyriteFeS20011136807,136809,136810,136811,136813,136830,136832,136842,136843,136853,13685639462
Pyrrhotite  (*)NickelineFe7S8002136809,1368429056
Quartz  (*)QuartzSiO2009136809,136810,136811,136822,136830,136832,136843,136853,13686661156
Rosasite  (*)MalachiteCuZn(CO3)(OH)2003136809,136830,136842454
Rutile  (*)RutileTiO20011368165614
Scheelite  (*)ScheeliteCa(WO4)003136810,136811,1368424894
Serpierite  (*)DevillineCa(Cu,Zn)4(SO4)2(OH)6·3H2O002136832,136842292
Silver  (*)CopperAg0011368305186
Smithsonite  (*)CalciteZn(CO3)006136809,136810,136832,136842,136853,1368662473
Sphalerite  (*)SphaleriteZnS0013136809,136810,136813,136815,136828,136830,136832,136835,136837,136842,136843,136844,13685321482
Titanite  (*)TitaniteCaTi(SiO4)O0011368164899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2002136811,1368132562
Vanadinite  (*)ApatitePb5(VO4)3Cl001136828605
Vesuvianite  (*)Vesuvianite(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10002136818,1368201395
Willemite  (*)PhenakiteZn2SiO4001136830303
Wittite  (*)NonePb8Bi10(S,Se)23002136840,13684615
Wollastonite  (*)WollastoniteCaSiO3005136810,136813,136815,136830,1368421247
Wulfenite  (*)ScheelitePbMoO4002136828,1368321655
Zircon  (*)ZirconZr(SiO4)0011368165251
Zoisite  (*)EpidoteCa2Al3[Si2O7][SiO4]O(OH)0011368411025



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


All locality data graciously provided by mindat.org

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