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:
Casa Grande District, Slate Mts, Tohono O'odham Indian Reservation, Pinal Co., Arizona, USA

Oldest recorded age at locality: 66
Youngest recorded age at locality: 66

mindat Locality ID: 31268
mindat URL: http://www.mindat.org/loc-31268.html

Tectonic Settings:

Total number of sublocalities beneath "Casa Grande District, Slate Mts, Tohono O'odham Indian Reservation, Pinal Co., Arizona, USA": 16
Total number of bottom-level sublocalities: 13

Number of Child Localities: 4
Child Localities:
North Komelik Area
Prieta Peak Area
Roadside Mine
Tat Momoli Area

Latitude: 32°33'0"N
Longitude: 111°53'34"W
Decimal Degree (lat, lon): 32.55,-111.89277777778
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 C Ca Cl Cr Cu F Fe H K Mg Mo O P Pb S Si Ti V Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneAmphiboleApatiteAragoniteAtacamiteBrochantiteCalciteChalcopyriteClayClinozoisite
CopperCorundumCovelliteDescloiziteDiasporeEpidoteFornaciteGypsumHumiteKaolinite
MalachiteMicaMolybdeniteNoneNot in a structural groupOlivinePhenakitePyritePyroxeneQuartz
RocksaltRutileScheeliteSphaleriteSpinel

44 IMA Minerals at location:
Anhydrite  (*)Atacamite  (*)Bornite  (*)Brochantite  (*)Calcite  (*)
Cerussite  (*)Chalcocite  (*)Chalcopyrite  (*)Chlorargyrite  (*)Chondrodite  (*)
Chrysocolla  (*)Copper  (*)Covellite  (*)Cuprite  (*)Descloizite  (*)
Diopside  (*)Dioptase  (*)Epidote  (*)Fornacite  (*)Forsterite  (*)
Galena  (*)Goethite  (*)Gold  (*)Gypsum  (*)Hematite  (*)
Hydrozincite  (*)Kaolinite  (*)Magnetite  (*)Malachite  (*)Molybdenite  (*)
Muscovite  (*)Phlogopite  (*)Pyrite  (*)Pyromorphite  (*)Quartz  (*)
Rutile  (*)Shattuckite  (*)Silver  (*)Sphalerite  (*)Tenorite  (*)
Tremolite  (*)Vanadinite  (*)Willemite  (*)Wulfenite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Anhydrite  (*)Not in a structural groupCa(SO4)666611462731588
Atacamite  (*)AtacamiteCu2Cl(OH)366661146273544
Bornite  (*)NoneCu5FeS466662146273,1462775516
Brochantite  (*)BrochantiteCu4(SO4)(OH)6666611462731633
Calcite  (*)CalciteCa(CO3)6666114627327770
Cerussite  (*)AragonitePb(CO3)11462784979
Chalcocite  (*)NoneCu2S66662146273,1462775707
Chalcopyrite  (*)ChalcopyriteCuFeS26666114627327198
Chlorargyrite  (*)RocksaltAgCl4146274,146280,146281,1462821382
Chondrodite  (*)HumiteMg5(SiO4)2F266661146273285
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O66662146273,1462743531
Copper  (*)CopperCu666611462733846
Covellite  (*)CovelliteCuS666611462734165
Cuprite  (*)Not in a structural groupCu2O666611462732970
Descloizite  (*)DescloizitePbZn(VO4)(OH)1146286378
Diopside  (*)PyroxeneCaMgSi2O6666611462734135
Dioptase  (*)NoneCuSiO3·H2O66661146273164
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)11462748173
Fornacite  (*)FornaciteCuPb2(CrO4)(AsO4)(OH)114627885
Forsterite  (*)OlivineMg2(SiO4)666611462731188
Galena  (*)RocksaltPbS66662146273,14628624243
Goethite  (*)DiasporeFeO(OH)666611462737437
Gold  (*)CopperAu2146274,14628630554
Gypsum  (*)GypsumCa(SO4)·2H2O666611462736890
Hematite  (*)CorundumFe2O36666114627314640
Hydrozincite  (*)NoneZn5(CO3)2(OH)611462811066
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)4666611462735591
Magnetite  (*)SpinelFe2+Fe3+2O46666114627314899
Malachite  (*)MalachiteCu2(CO3)(OH)2114627412537
Molybdenite  (*)MolybdeniteMoS2666611462735800
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)266662146273,14628117380
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)2666611462732273
Pyrite  (*)PyriteFeS266664146273,146274,146280,14628139462
Pyromorphite  (*)ApatitePb5(PO4)3Cl11462811725
Quartz  (*)QuartzSiO2114627461156
Rutile  (*)RutileTiO2666611462735614
Shattuckite  (*)NoneCu5(SiO3)4(OH)2114627871
Silver  (*)CopperAg2146280,1462815186
Sphalerite  (*)SphaleriteZnS66663146273,146280,14628121482
Tenorite  (*)NoneCuO666611462731101
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2666611462732562
Vanadinite  (*)ApatitePb5(VO4)3Cl3146274,146281,146286605
Willemite  (*)PhenakiteZn2SiO42146281,146286303
Wulfenite  (*)ScheelitePbMoO42146274,1462751655


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
PorphCu-00111666666      Brochantite, Chalcocite, Chalcopyrite, Covellite, Cuprite, Diopside, Magnetite, Pyrite, Tenorite, TremoliteCu51058Lakeshore Mine (Casa Grande Mine; Trans Arizona Res. Inc. Mine; Treasure State Mine; Cyprus Casa Grande Mine; Tohono Mine; Cyprus Tohono Mine), North Komelik Area, Casa Grande District, Slate Mts, Tohono O'odham Indian Reservation, Pinal Co., Arizona, USALakeshoreSinger et al. (2008) USGSOFR2008_1155 

SampleSource LocalityReference URL

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