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:
Courtland, Turquoise District (Courtland-Gleeson District), Dragoon Mts, Cochise Co., Arizona, USA

Oldest recorded age at locality: 202
Youngest recorded age at locality: 0

mindat Locality ID: 46992
mindat URL: http://www.mindat.org/loc-46992.html

Tectonic Settings:

Total number of sublocalities beneath "Courtland, Turquoise District (Courtland-Gleeson District), Dragoon Mts, Cochise Co., Arizona, USA": 14
Total number of bottom-level sublocalities: 11

Number of Child Localities: 7
Child Localities:
Casey Hill
Costello Mine Group (Costello Claims)
Mexican Hat Mountain
Several Unnamed Prospects
Unnamed Prospect No. 1
Unnamed Prospect No. 2
Unnamed Prospect Pit

Latitude: 31°46'34"N
Longitude: 109°48'30"W
Decimal Degree (lat, lon): 31.776111111111,-109.80833333333
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 Ba C Ca Cl Cu F Fe H K Mg Mn Na O P Pb S Si Sr Zn 

Elements from minerals reported directly at this locality: C Cu H O 

Structural Groups for minerals in this locality: 
AcetateAdeliteAllophaneAluniteAmorphousAmphiboleAndalusiteAragoniteBaryteBrochantite
CalciteChalcoalumiteChalcopyriteClayCopiapiteCopperCorundumCovelliteCyanotrichiteDiaspore
FluoriteGypsumHydrotalciteLepidocrociteMalachiteMarcasiteMelanteriteNoneNot in a structural groupPharmacosiderite
PyritePyrophyllitePyroxeneQuartzRocksaltSerpentineSphaleriteTalcTurquoiseWoodwardite

55 IMA Minerals at location:
Actinolite  (*)Allophane  (*)Anglesite  (*)Aurichalcite  (*)Azurite  (*)
Baryte  (*)Birnessite  (*)Brochantite  (*)Calcite  (*)Cerussite  (*)
Chalcoalumite  (*)Chalcophanite  (*)Chalcopyrite  (*)Chlorargyrite  (*)Chrysocolla  (*)
Chrysotile  (*)Conichalcite  (*)Copiapite  (*)Copper  (*)Covellite  (*)
Cuprite  (*)Cyanotrichite  (*)Delafossite  (*)Diopside  (*)Dolomite  (*)
Fluorite  (*)Galena  (*)Glaucocerinite  (*)Goethite  (*)Gold  (*)
Gypsum  (*)Hematite  (*)Hemimorphite  (*)Hoganite  (*)Jarosite  (*)
Lepidocrocite  (*)Libethenite  (*)Malachite  (*)Marcasite  (*)Melanterite  (*)
Opal  (*)Pharmacosiderite  (*)Pyrite  (*)Pyrophyllite  (*)Quartz  (*)
Ranciéite  (*)Rosasite  (*)Siderite  (*)Smithsonite  (*)Sphalerite  (*)
Talc  (*)Tenorite  (*)Todorokite  (*)Turquoise  (*)Woodwardite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2202011368783419
Allophane  (*)AllophaneAl2O3(SiO2)1.3-2.0·2.5-3.0H2O20204136878,136884,136888,136889470
Anglesite  (*)BarytePb(SO4)202011368812734
Aurichalcite  (*)None(Zn,Cu)5(CO3)2(OH)620201136878919
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)220203136878,136888,1368895509
Baryte  (*)BaryteBa(SO4)2020113687811547
Birnessite  (*)None(Na,Ca,K)0.6(Mn4+,Mn3+)2O4·1.5H2O20202136887,136890178
Brochantite  (*)BrochantiteCu4(SO4)(OH)6202011368781633
Calcite  (*)CalciteCa(CO3)20203136878,136884,13688527770
Cerussite  (*)AragonitePb(CO3)202011368814979
Chalcoalumite  (*)ChalcoalumiteCuAl4(SO4)(OH)12·3H2O2020113687891
Chalcophanite  (*)NoneZnMn4+3O7·3H2O20201136878197
Chalcopyrite  (*)ChalcopyriteCuFeS22020113687827198
Chlorargyrite  (*)RocksaltAgCl202011368781382
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O20207136878,136880,136882,136884,136885,136888,1368893531
Chrysotile  (*)Serpentine ClayMg3Si2O5(OH)420201136878951
Conichalcite  (*)AdeliteCaCu(AsO4)(OH)20201136884363
Copiapite  (*)CopiapiteFe2+Fe3+4(SO4)6(OH)2·20H2O20201136878382
Copper  (*)CopperCu202011368783846
Covellite  (*)CovelliteCuS20202136878,1368894165
Cuprite  (*)Not in a structural groupCu2O20202136878,1368802970
Cyanotrichite  (*)CyanotrichiteCu4Al2(SO4)(OH)12(H2O)220201136878179
Delafossite  (*)NoneCu1+Fe3+O220201136878144
Diopside  (*)PyroxeneCaMgSi2O6202011368784135
Dolomite  (*)NoneCaMg(CO3)2202011368789895
Fluorite  (*)FluoriteCaF2202011368789617
Galena  (*)RocksaltPbS20202136878,13688124243
Glaucocerinite  (*)Woodwardite Hydrotalcite(Zn1-xAlx)(SO4)x/2(OH)2·nH2O (x < 0.5, n > 3x/2)2020113687820
Goethite  (*)DiasporeFeO(OH)202011368787437
Gold  (*)CopperAu2020113688430554
Gypsum  (*)GypsumCa(SO4)·2H2O202011368786890
Hematite  (*)CorundumFe2O320205136878,136884,136885,136888,13688914640
Hemimorphite  (*)Not in a structural groupZn4(Si2O7)(OH)2·H2O202011368781689
Hoganite  (*)AcetateCu(CH3COO)2·H2O0004
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)6202011368782228
Lepidocrocite  (*)LepidocrociteFe3+O(OH)20201136878581
Libethenite  (*)AndalusiteCu2(PO4)(OH)20201136878234
Malachite  (*)MalachiteCu2(CO3)(OH)220206136878,136880,136884,136885,136888,13688912537
Marcasite  (*)MarcasiteFeS2202011368785674
Melanterite  (*)MelanteriteFe(SO4)·7H2O20201136878915
Opal  (*)AmorphousSiO2·nH2O202011368782994
Pharmacosiderite  (*)PharmacosideriteKFe3+4(AsO4)3(OH)4·6-7H2O20201136878428
Pyrite  (*)PyriteFeS220204136878,136881,136888,13688939462
Pyrophyllite  (*)Clay PyrophylliteAl2Si4O10(OH)220201136878771
Quartz  (*)QuartzSiO220205136878,136884,136885,136888,13688961156
Ranciéite  (*)None(Ca,Mn2+)0.2(Mn4+,Mn3+)O2·0.6H2O20201136878177
Rosasite  (*)MalachiteCuZn(CO3)(OH)220201136878454
Siderite  (*)CalciteFe(CO3)202011368786417
Smithsonite  (*)CalciteZn(CO3)202011368782473
Sphalerite  (*)SphaleriteZnS20202136878,13688121482
Talc  (*)Clay TalcMg3Si4O10(OH)2202011368783337
Tenorite  (*)NoneCuO202011368821101
Todorokite  (*)None(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12·3-4H2O20202136887,136890433
Turquoise  (*)TurquoiseCuAl6(PO4)4(OH)8·4H2O20201136878484
Woodwardite  (*)Woodwardite Hydrotalcite(Cu1-xAlx)(SO4)x/2(OH)2·nH2O (x < 0.5, n < 3x/2)2020113687857


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.


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
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."
UBCMDRUSP2_1_Copper_Belle01202200.6201.3±0.7     Yes  3316Turquoise District (Courtland-Gleeson District), Dragoon Mts, Cochise Co., Arizona, USACourland Gleeson areaLang (2001) UBCMDRUSP2_1 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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