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:
O'Toole Deposit, Fortaleza De Minas, Minas Gerais, Brazil

Oldest recorded age at locality: 2700
Youngest recorded age at locality: 2700

mindat Locality ID: 159621
mindat URL: http://www.mindat.org/loc-159621.html

Tectonic Settings:

Total number of sublocalities beneath "O'Toole Deposit, Fortaleza De Minas, Minas Gerais, Brazil": 0
Total number of bottom-level sublocalities: 0

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0
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 Bi C Ca Co Cu Fe H Ir Mg Ni O Os Pd Pt Re S Si Te Ti Zn 

Elements from minerals reported directly at this locality: Ag Al As Au Bi C Ca Co Cu Fe H Ir Mg Ni O Os Pd Pt Re S Si Te Ti Zn 

Structural Groups for minerals in this locality: 
AmphiboleArsenicArsenopyriteChalcopyriteClayCobaltiteCopperCorundumLöllingiteMarcasite
MeloniteNickelineNonePentlanditePyriteSphaleriteSpinelTalcTitaniteValleriite

33 IMA Minerals at location:
Actinolite  (*)Arsenopyrite  (*)Bismuth  (*)Chalcopyrite  (*)Cobaltite  (*)
Gold  (*)Graphite  (*)Hematite  (*)Ilmenite  (*)Irarsite  (*)
Kotulskite  (*)Mackinawite  (*)Magnetite  (*)Marcasite  (*)Maucherite  (*)
Melonite  (*)Nickeline  (*)Omeiite  (*)Osarsite  (*)Gersdorffite-Pa3  (*)
Pentlandite  (*)Platinum  (*)Pyrite  (*)Pyrrhotite  (*)Rheniite  (*)
Silver  (*)Sperrylite  (*)Sphalerite  (*)Talc  (*)Titanite  (*)
Tremolite  (*)Valleriite  (*)Violarite  (*)
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)22700270003419
Arsenopyrite  (*)ArsenopyriteFeAsS2700270009052
Bismuth  (*)ArsenicBi2700270001966
Chalcopyrite  (*)ChalcopyriteCuFeS227002700027198
Cobaltite  (*)CobaltiteCoAsS270027000966
Gold  (*)CopperAu27002700030554
Graphite  (*)NoneC2700270002812
Hematite  (*)CorundumFe2O327002700014640
Ilmenite  (*)CorundumFe2+Ti4+O32700270005433
Irarsite  (*)PyriteIrAsS270027000154
Kotulskite  (*)NickelinePd(Te,Bi)2-x (x ≈ 0.4)270027000116
Mackinawite  (*)None(Fe,Ni)1+xS (x = 0-0.07)270027000451
Magnetite  (*)SpinelFe2+Fe3+2O427002700014899
Marcasite  (*)MarcasiteFeS22700270005674
Maucherite  (*)NoneNi11As8270027000161
Melonite  (*)MeloniteNiTe2270027000207
Nickeline  (*)NickelineNiAs270027000633
Omeiite  (*)LöllingiteOsAs22700270007
Osarsite  (*)ArsenopyriteOsAsS27002700016
Gersdorffite-Pa3  (*)PyriteNiAsS270027000767
Pentlandite  (*)Pentlandite(Ni,Fe)9S82700270001512
Platinum  (*)CopperPt270027000485
Pyrite  (*)PyriteFeS227002700039462
Pyrrhotite  (*)NickelineFe7S82700270009056
Rheniite  (*)NoneReS22700270008
Silver  (*)CopperAg2700270005186
Sperrylite  (*)PyritePtAs2270027000337
Sphalerite  (*)SphaleriteZnS27002700021482
Talc  (*)Clay TalcMg3Si4O10(OH)22700270003337
Titanite  (*)TitaniteCaTi(SiO4)O2700270004899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)22700270002562
Valleriite  (*)Valleriite2[(Fe,Cu)S]·1.53[(Mg,Al)(OH)2]270027000237
Violarite  (*)SpinelFeNi2S4270027000380


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Michelle_663Ni-Cu sulfides in komatiite


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_66327002700>2700 Age of deposit or general age of the metallogenic province     Ni, Cu159621O'Toole Deposit, Fortaleza De Minas, Minas Gerais, BrazilO'TooleHoatson et al. (2006)10.1016/j.oregeorev.2006.05.002OGR29_177See Table. 1 Global resources of nickel metal and ages of the major nickel sulfide deposits of the world. Age can refer to the age of a specific nickel sulfide deposit, or the general age of the metallogenic province containing nickel deposits that are similar to a dated deposit (e.g. 2705 Ma Komatiite-hosted deposits in the Eastern Goldfields Province).

SampleSource LocalityReference URL

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