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:
Florence, Florence District (Blackwater District; Black Rock District), Pinal Co., Arizona, USA

Oldest recorded age at locality: 62
Youngest recorded age at locality: 7.48

mindat Locality ID: 47819
mindat URL: http://www.mindat.org/loc-47819.html

Tectonic Settings:

Total number of sublocalities beneath "Florence, Florence District (Blackwater District; Black Rock District), Pinal Co., Arizona, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Florence Project
Oro Negro Mining Company Properties
Poston Butte Deposit (Continental Oil Co. Property; Aztec Exploration And Development Co. Property; Florence Conoco; Florence Copper Co. Property)

Latitude: 33°2'16"N
Longitude: 111°25'53"W
Decimal Degree (lat, lon): 33.037777777778,-111.43138888889

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: Al C Ca Cu Fe H K Mg Mo Na O Pb S Si Ti Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneBrochantiteCalciteChalcopyriteClayClinozoisiteCopperCovelliteEpidoteKaolinite
MicaMolybdeniteNoneNot in a structural groupPyriteRocksaltRutileSmectite-vermiculiteSphaleriteSpinel

22 IMA Minerals at location:
Allophane  (*)Azurite  (*)Bornite  (*)Brochantite  (*)Chalcocite  (*)
Chalcopyrite  (*)Chrysocolla  (*)Copper  (*)Covellite  (*)Cuprite  (*)
Epidote  (*)Galena  (*)Kaolinite  (*)Magnetite  (*)Molybdenite  (*)
Montmorillonite  (*)Muscovite  (*)Pyrite  (*)Rutile  (*)Shattuckite  (*)
Siderite  (*)Sphalerite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Allophane  (*)AllophaneAl2O3(SiO2)1.3-2.0·2.5-3.0H2O62621145513470
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)2626211455135509
Bornite  (*)NoneCu5FeS4626211455135516
Brochantite  (*)BrochantiteCu4(SO4)(OH)662622145511,1455131633
Chalcocite  (*)NoneCu2S62622145511,1455135707
Chalcopyrite  (*)ChalcopyriteCuFeS26262114551327198
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O62622145511,1455133531
Copper  (*)CopperCu62622145511,1455133846
Covellite  (*)CovelliteCuS626211455134165
Cuprite  (*)Not in a structural groupCu2O62622145511,1455132970
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)626211455138173
Galena  (*)RocksaltPbS6262114551324243
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)4627.482145511,1455135591
Magnetite  (*)SpinelFe2+Fe3+2O46262114551314899
Molybdenite  (*)MolybdeniteMoS262622145511,1455135800
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O626211455131508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2627.482145511,14551317380
Pyrite  (*)PyriteFeS26262114551339462
Rutile  (*)RutileTiO2626211455135614
Shattuckite  (*)NoneCu5(SiO3)4(OH)262622145511,14551371
Siderite  (*)CalciteFe(CO3)626211455136417
Sphalerite  (*)SphaleriteZnS6262114551321482



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
Giersdorf_000004708.767.488.12±0.64K-Ar  UAKA-72-20    52775Poston Butte Deposit (Continental Oil Co. Property; Aztec Exploration And Development Co. Property; Florence Conoco; Florence Copper Co. Property), Florence, Florence District (Blackwater District; Black Rock District), Pinal Co., Arizona, USAPoston ButteShafiqullah et al. (1980) AGSD12_201 
PorphCu-00112626262      Allophane, Azurite, Bornite, Brochantite, Chalcocite, Chalcopyrite, Chrysocolla, Copper, Covellite, Cuprite, Epidote, Galena, Magnetite, Molybdenite, Montmorillonite, Pyrite, Rutile, Shattuckite, Siderite, SphaleriteCu52775Poston Butte Deposit (Continental Oil Co. Property; Aztec Exploration And Development Co. Property; Florence Conoco; Florence Copper Co. Property), Florence, Florence District (Blackwater District; Black Rock District), Pinal Co., Arizona, USAPoston ButteSinger et al. (2008) USGSOFR2008_1155 


SampleSource LocalityReference URL


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