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:
Bultfontein Mine, KEM JV Mine (Kimberley Ekapa Mining Joint Venture Mine; Kimberley Underground Mine), Kimberley, Francis Baard District, Northern Cape, South Africa

Oldest recorded age at locality: 190
Youngest recorded age at locality: 81

mindat Locality ID: 8982
mindat URL: http://www.mindat.org/loc-8982.html

Tectonic Settings:

Total number of sublocalities beneath "Bultfontein Mine, KEM JV Mine (Kimberley Ekapa Mining Joint Venture Mine; Kimberley Underground Mine), Kimberley, Francis Baard District, Northern Cape, South Africa": 0
Total number of bottom-level sublocalities: 0

Latitude: 28°46'5"S
Longitude: 24°47'31"E
Decimal Degree (lat, lon): -28.768055555556,24.791944444444

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 Ba C Ca Cl Cr F Fe H K Mg Na Ni O P S Si Sr Ti Zr 

Elements from minerals reported directly at this locality: Al Ba C Ca Cl Cr F Fe H K Mg Na Ni O P S Si Sr Ti Zr 

Structural Groups for minerals in this locality: 
AmphiboleAphthitaliteApophylliteAragoniteArcaniteBaryteBradleyiteCalciteClayCoronadite
CorundumCrichtoniteDiamondFairchilditeFluoriteMagnetoplumbiteMicaNatroliteNickelineNone
OlivinePentlanditePerovskitePseudobrookitePyroxeneRhodesiteRocksaltRutileSpinelSpurrite-Afwillite
Titanite

48 IMA Minerals at location:
Aphthitalite  (*)Arcanite  (*)Armalcolite  (*)Baryte  (*)Bradleyite  (*)
Bultfonteinite  (*)Calcite  (*)Celestine  (*)Chromite  (*)Diamond  (*)
Diopside  (*)Dolomite  (*)Eitelite  (*)Fairchildite  (*)Fluorapophyllite-(K)  (*)
Fluorite  (*)Freudenbergite  (*)Gregoryite  (*)Halite  (*)Hawthorneite  (*)
Ilmenite  (*)Kalsilite  (*)Kogarkoite  (*)Lindsleyite  (*)Magnesioferrite  (*)
Magnesite  (*)Magnetite  (*)Mathiasite  (*)Monticellite  (*)Mountainite  (*)
Nahcolite  (*)Natrite  (*)Natrolite  (*)Nyerereite  (*)Pentlandite  (*)
Perovskite  (*)Phlogopite  (*)Potassic-richterite  (*)Priderite  (*)Pyrrhotite  (*)
Rhodesite  (*)Rutile  (*)Shortite  (*)Spinel  (*)Sylvite  (*)
Titanite  (*)Witherite  (*)Zemkorite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aphthitalite  (*)AphthitaliteK3Na(SO4)219089.49077
Arcanite  (*)ArcaniteK2(SO4)19089.49030
Armalcolite  (*)Pseudobrookite(Mg,Fe2+)Ti2O519089.49039
Baryte  (*)BaryteBa(SO4)19089.49011547
Bradleyite  (*)BradleyiteNa3Mg(PO4)(CO3)19089.49014
Bultfonteinite  (*)Spurrite-AfwilliteCa2SiO3(OH)F·H2O19089.49020
Calcite  (*)CalciteCa(CO3)19089.49027770
Celestine  (*)BaryteSr(SO4)19089.4901252
Chromite  (*)SpinelFe2+Cr2O419089.4903902
Diamond  (*)DiamondC19089.490697
Diopside  (*)PyroxeneCaMgSi2O619089.4904135
Dolomite  (*)NoneCaMg(CO3)219089.4909895
Eitelite  (*)NoneNa2Mg(CO3)219089.49020
Fairchildite  (*)FairchilditeK2Ca(CO3)219089.49010
Fluorapophyllite-(K)  (*)ApophylliteKCa4Si8O20F·8H2O19089.490303
Fluorite  (*)FluoriteCaF219089.4909617
Freudenbergite  (*)NoneNa(Ti4+3Fe3+)O819089.4908
Gregoryite  (*)NoneNa2(CO3)19089.4903
Halite  (*)RocksaltNaCl19089.4901398
Hawthorneite  (*)MagnetoplumbiteBaMgTi3Cr4Fe2+2Fe3+2O1919089.4902
Ilmenite  (*)CorundumFe2+Ti4+O319089.4905433
Kalsilite  (*)NoneKAlSiO419089.49049
Kogarkoite  (*)NoneNa3(SO4)F19089.49014
Lindsleyite  (*)Crichtonite(Ba,Sr)(Zr,Ca)(Fe,Mg)2(Ti,Cr,Fe)18O38190177012
Magnesioferrite  (*)SpinelMgFe3+2O419089.49098
Magnesite  (*)CalciteMg(CO3)19089.4901487
Magnetite  (*)SpinelFe2+Fe3+2O419089.49014899
Mathiasite  (*)Crichtonite(K,Ba,Sr)(Zr,Fe)(Mg,Fe)2(Ti,Cr,Fe)18O3819017707
Monticellite  (*)OlivineCaMg(SiO4)19089.490153
Mountainite  (*)NoneKNa2Ca2[Si8O19(OH)]·6H2O19089.4905
Nahcolite  (*)NoneNaH(CO3)19089.49078
Natrite  (*)NoneNa2(CO3)19089.49019
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O19089.4901236
Nyerereite  (*)FairchilditeNa2Ca(CO3)219089.49018
Pentlandite  (*)Pentlandite(Ni,Fe)9S819089.4901512
Perovskite  (*)PerovskiteCaTiO319089.490495
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)219089.4902273
Potassic-richterite  (*)AmphiboleK(NaCa)Mg5Si8O22(OH)219089.49021
Priderite  (*)CoronaditeK(Ti7Fe3+)O1619089.49041
Pyrrhotite  (*)NickelineFe7S819089.4909056
Rhodesite  (*)RhodesiteKHCa2Si8O19·5H2O19089.49011
Rutile  (*)RutileTiO219089.4905614
Shortite  (*)NoneNa2Ca2(CO3)319089.49037
Spinel  (*)SpinelMgAl2O419089.4901934
Sylvite  (*)RocksaltKCl19089.490275
Titanite  (*)TitaniteCaTi(SiO4)O19017704899
Witherite  (*)AragoniteBa(CO3)19089.490251
Zemkorite  (*)NoneNa2Ca(CO3)290.6589.4905



Locality Notes from all Ages at Locality:
Age IDLocality Notes
Michelle_382Sample is a MARID xenolith collected from Bultfontein diamond mine dumps. Bultfontein kimberlite is part of the Kimberley Cluster in the Kaapval Craton.
Michelle_383Sample is a LIMA xenolith collected from Bultfontein diamond mine dumps. Bultfontein kimberlite is part of the Kimberley Cluster in the Kaapval Craton.
Michelle_384See Section 2. Age refers to the kimberlite emplacement in the Kimberley Kimberlite cluster.


3 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_384908181-90 Age of kimberlite emplacement for the Kimberley cluster   Yes  56310Kimberley, Francis Baard District, Northern Cape, South AfricaKimberley kimberlites clusterGiuliani et al (2014)10.1016/j.epsl.2014.05.044EPSL400_132Age of kimberlite emplacement for the Kimberley cluster. Author believes age to reflect previous geochronological work of various methods.
Michelle_38290.6589.4990.07±0.58U-PbAge of metasomatic mantle events prior to kimberlite emplacementzirconXM1/331  ZirconZemkorite 8982Bultfontein Mine, KEM JV Mine (Kimberley Ekapa Mining Joint Venture Mine; Kimberley Underground Mine), Kimberley, Francis Baard District, Northern Cape, South AfricaBultfontein KimberliteGiuliani et al. (2015) NC6_7837Supplementary Figure 8, Figure 2. Age of MARID xenolith from kimberlite. Age suggests that metasomatic mantle events occurred prior to orangeite magmatism beneath the Kimberley area.
Michelle_383190177177-190U-PbAge of metasomatic mantle eventstitaniteXM1/341, XM1/345, XM1/362  TitaniteLindsleyite, Mathiasite 8982Bultfontein Mine, KEM JV Mine (Kimberley Ekapa Mining Joint Venture Mine; Kimberley Underground Mine), Kimberley, Francis Baard District, Northern Cape, South AfricaBultfontein KimberliteGiuliani et al. (2015) NC6_7837Figure 2. Age of LIMA xenolith from kimberlite.


SampleSource LocalityReference URL


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