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:
Fortaleza De Minas, Minas Gerais, Brazil

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

mindat Locality ID: 225026
mindat URL: http://www.mindat.org/loc-225026.html

Tectonic Settings:

Total number of sublocalities beneath "Fortaleza De Minas, Minas Gerais, Brazil": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
O'Toole Deposit

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: O Pd Si Te 

Structural Groups for minerals in this locality: 
AmphiboleArsenicArsenopyriteChalcopyriteClayCobaltiteCopperCorundumLöllingiteMarcasite
MeloniteNickelineNonePentlanditePyriteQuartzSphaleriteSpinelTalcTitanite
Valleriite

35 IMA Minerals at location:
Actinolite  (*)Arsenopyrite  (*)Bismuth  (*)Chalcopyrite  (*)Cobaltite  (*)
Gold  (*)Graphite  (*)Hematite  (*)Ilmenite  (*)Irarsite  (*)
Kotulskite  (*)Mackinawite  (*)Magnetite  (*)Marcasite  (*)Maucherite  (*)
Melonite  (*)Merenskyite  (*)Nickeline  (*)Omeiite  (*)Osarsite  (*)
Gersdorffite-Pa3  (*)Pentlandite  (*)Platinum  (*)Pyrite  (*)Pyrrhotite  (*)
Quartz  (*)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)2270027001277233419
Arsenopyrite  (*)ArsenopyriteFeAsS270027001277239052
Bismuth  (*)ArsenicBi270027001277231966
Chalcopyrite  (*)ChalcopyriteCuFeS22700270012772327198
Cobaltite  (*)CobaltiteCoAsS27002700127723966
Gold  (*)CopperAu2700270012772330554
Graphite  (*)NoneC270027001277232812
Hematite  (*)CorundumFe2O32700270012772314640
Ilmenite  (*)CorundumFe2+Ti4+O3270027001277235433
Irarsite  (*)PyriteIrAsS27002700127723154
Kotulskite  (*)NickelinePd(Te,Bi)2-x (x ≈ 0.4)27002700127723116
Mackinawite  (*)None(Fe,Ni)1+xS (x = 0-0.07)27002700127723451
Magnetite  (*)SpinelFe2+Fe3+2O42700270012772314899
Marcasite  (*)MarcasiteFeS2270027001277235674
Maucherite  (*)NoneNi11As827002700127723161
Melonite  (*)MeloniteNiTe227002700127723207
Merenskyite  (*)MelonitePdTe2270027000155
Nickeline  (*)NickelineNiAs27002700127723633
Omeiite  (*)LöllingiteOsAs2270027001277237
Osarsite  (*)ArsenopyriteOsAsS2700270012772316
Gersdorffite-Pa3  (*)PyriteNiAsS27002700127723767
Pentlandite  (*)Pentlandite(Ni,Fe)9S8270027001277231512
Platinum  (*)CopperPt27002700127723485
Pyrite  (*)PyriteFeS22700270012772339462
Pyrrhotite  (*)NickelineFe7S8270027001277239056
Quartz  (*)QuartzSiO227002700061156
Rheniite  (*)NoneReS2270027001277238
Silver  (*)CopperAg270027001277235186
Sperrylite  (*)PyritePtAs227002700127723337
Sphalerite  (*)SphaleriteZnS2700270012772321482
Talc  (*)Clay TalcMg3Si4O10(OH)2270027001277233337
Titanite  (*)TitaniteCaTi(SiO4)O270027001277234899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2270027001277232562
Valleriite  (*)Valleriite2[(Fe,Cu)S]·1.53[(Mg,Al)(OH)2]27002700127723237
Violarite  (*)SpinelFeNi2S427002700127723380


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).

All locality data graciously provided by mindat.org

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