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:
Arusha Region, Tanzania

Oldest recorded age at locality: 610.6
Youngest recorded age at locality: 0

mindat Locality ID: 3246
mindat URL: http://www.mindat.org/loc-3246.html

Tectonic Settings:

Total number of sublocalities beneath "Arusha Region, Tanzania": 28
Total number of bottom-level sublocalities: 18

Number of Child Localities: 15
Child Localities:
Arusha
Deeti Volcanic Cone
Dumbawanga District
Engusero Sambu
Kerimasi Volcano
Ketito (Kiteto?)
Lake Manyara
Lake Natron
Longido
Minjingu Quarry
Mt Oldoinyo Lengai (Ol Doinyo Lengai)
Mundarara Mine (Mdarara)
Ngorongoro Conservation Area
Ngorongoro District
Sadiman Volcano

Latitude: 3°15'30"S
Longitude: 35°47'27"E
Decimal Degree (lat, lon): -3.2583333333333,35.790833333333

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 B Ba Be C Ca Ce Cl Cu F Fe H K Mg Mn Na Nb Ni O P Pb S Si Sr Ti Zn Zr 

Elements from minerals reported directly at this locality: Al B Ca H Mg O Si 

Structural Groups for minerals in this locality: 
AmorphousAmphiboleAnalcimeApatiteAphthitaliteAragoniteAxiniteBaddeleyiteBaryteBeryl
CalciteCancrinite-sodaliteChalcopyriteChevkiniteClayCorundumDiasporeDjerfisheriteEpidoteErionite
EudialyteFairchilditeFeldsparFluoriteGarnetGypsumHumiteJorgkelleriteLovozeriteMelilite
MicaNatroliteNickelineNoneNot in a structural groupOlivinePentlanditePerovskitePhenakitePyroxene
QuartzRocksaltRutileSapphirineSodaliteSphaleriteSpinelStauroliteSulphurTitanite
TourmalineTridymiteWollastoniteWöhlerite

107 IMA Minerals at location:
Aegirine  (*)Aegirine-augite  (*)Aenigmatite  (*)Alabandite  (*)Albite  (*)
Alumoåkermanite  (*)Analcime  (*)Andradite  (*)Anhydrite  (*)Anorthite  (*)
Aphthitalite  (*)Aragonite  (*)Augite  (*)Axinite-(Mg)  (*)Baddeleyite  (*)
Baryte  (*)Barytolamprophyllite  (*)Beryl  (*)Calcite  (*)Celestine  (*)
Cerianite-(Ce)  (*)Chalcopyrite  (*)Chevkinite-(Ce)  (*)Chondrodite  (*)Chrysoberyl  (*)
Combeite  (*)Corundum  (*)Cuspidine  (*)Dawsonite  (*)Diaspore  (*)
Diopside  (*)Djerfisherite  (*)Dolomite  (*)Dravite  (*)Erionite-Na  (*)
Eudialyte  (*)Fluorapatite  (*)Fluorite  (*)Forsterite  (*)Franklinite  (*)
Galena  (*)Gaylussite  (*)Götzenite  (*)Graphite  (*)Gregoryite  (*)
Gypsum  (*)Halite  (*)Haüyne  (*)Hematite  (*)Hercynite  (*)
Ilmenite  (*)Jacobsite  (*)Jörgkellerite  (*)Kalicinite  (*)Kerimasite  (*)
Kimzeyite  (*)Kogarkoite  (*)Kyanite  (*)Lamprophyllite  (*)Larnite  (*)
Magnesio-hastingsite  (*)Magnesioferrite  (*)Magnesite  (*)Magnetite  (*)Monohydrocalcite  (*)
Monticellite  (*)Muscovite  (*)Nahcolite  (*)Natrolite  (*)Neighborite  (*)
Nepheline  (*)Niocalite  (*)Nyerereite  (*)Omphacite  (*)Opal  (*)
Oxo-magnesio-hastingsite  (*)Pargasite  (*)Pentlandite  (*)Perovskite  (*)Phenakite  (*)
Phlogopite  (*)Pirssonite  (*)Pyrope  (*)Pyrrhotite  (*)Quartz  (*)
Rutile  (*)Sanidine  (*)Schairerite  (*)Sellaite  (*)Shortite  (*)
Sodalite  (*)Spessartine  (*)Sphalerite  (*)Spinel  (*)Staurolite  (*)
Strontianite  (*)Sulphohalite  (*)Sulphur  (*)Sylvite  (*)Thénardite  (*)
Thermonatrite  (*)Titanite  (*)Trona  (*)Villiaumite  (*)Witherite  (*)
Wollastonite  (*)Zoisite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aegirine  (*)PyroxeneNaFe3+Si2O60.01502115647,1156511022
Aegirine-augite  (*)Pyroxene(Ca,Na)(Fe3+,Mg,Fe2+)Si2O60.01501115647286
Aenigmatite  (*)SapphirineNa4[Fe2+10Ti2]O4[Si12O36]4.93.262115651,115657133
Alabandite  (*)RocksaltMnS0.01501115647312
Albite  (*)FeldsparNa(AlSi3O8)11156488803
Alumoåkermanite  (*)Melilite(Ca,Na)2(Al,Mg,Fe2+)(Si2O7)0.015011156477
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O11156501627
Andradite  (*)GarnetCa3Fe3+2(SiO4)30.015011156471534
Anhydrite  (*)Not in a structural groupCa(SO4)0.015011156471588
Anorthite  (*)FeldsparCa(Al2Si2O8)610.6609.411156431036
Aphthitalite  (*)AphthitaliteK3Na(SO4)20.0150111564777
Aragonite  (*)AragoniteCa(CO3)11156423250
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O60.015011156472060
Axinite-(Mg)  (*)AxiniteCa4Mg2Al4[B2Si8O30](OH)2610.60012
Baddeleyite  (*)BaddeleyiteZrO20.60.41115636238
Baryte  (*)BaryteBa(SO4)0.602115636,11564711547
Barytolamprophyllite  (*)None(BaK)Ti2Na3Ti(Si2O7)2O2(OH)24.93.26111565721
Beryl  (*)BerylBe3Al2Si6O182115634,1156414286
Calcite  (*)CalciteCa(CO3)610.605115636,115642,115645,115646,11564727770
Celestine  (*)BaryteSr(SO4)0.015011156471252
Cerianite-(Ce)  (*)FluoriteCeO20.60.4111563694
Chalcopyrite  (*)ChalcopyriteCuFeS24.93.262115647,11565727198
Chevkinite-(Ce)  (*)ChevkiniteCe4(Ti,Fe2+,Fe3+)5O8(Si2O7)2111565189
Chondrodite  (*)HumiteMg5(SiO4)2F21115641285
Chrysoberyl  (*)OlivineBeAl2O42115634,115641321
Combeite  (*)LovozeriteNa4.5Ca3.5Si6O17.5(OH)0.50.015011156473
Corundum  (*)CorundumAl2O3610.6609.46115634,115639,115641,115643,115645,1156481797
Cuspidine  (*)WöhleriteCa8(Si2O7)2F44.93.262115647,11565767
Dawsonite  (*)NoneNaAl(CO3)(OH)2111565090
Diaspore  (*)DiasporeAlO(OH)1115648481
Diopside  (*)PyroxeneCaMgSi2O64.93.263115632,115647,1156574135
Djerfisherite  (*)DjerfisheriteK6(Fe,Cu,Ni)25S26Cl0.0150111564760
Dolomite  (*)NoneCaMg(CO3)20.60.42115636,1156469895
Dravite  (*)TourmalineNaMg3Al6(Si6O18)(BO3)3(OH)3(OH)2115635,115656648
Erionite-Na  (*)ErioniteNa10[Si26Al10O72]·30H2O111564213
Eudialyte  (*)EudialyteNa15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)21115651182
Fluorapatite  (*)ApatiteCa5(PO4)3F0.603115636,115646,1156472740
Fluorite  (*)FluoriteCaF24.93.263115642,115647,1156579617
Forsterite  (*)OlivineMg2(SiO4)0.602115636,1156471188
Franklinite  (*)SpinelZnFe3+2O40.60.4111563652
Galena  (*)RocksaltPbS4.93.262115647,11565724243
Gaylussite  (*)NoneNa2Ca(CO3)2·5H2O0.01502115642,11564757
Götzenite  (*)NoneCa4NaCa2Ti(Si2O7)2(OF)F24.93.26111565727
Graphite  (*)NoneC11156482812
Gregoryite  (*)NoneNa2(CO3)0.015011156473
Gypsum  (*)GypsumCa(SO4)·2H2O0.015011156476890
Halite  (*)RocksaltNaCl0.01502115642,1156471398
Haüyne  (*)Sodalite Cancrinite-sodaliteNa3Ca(Si3Al3)O12(SO4)0.01501115647158
Hematite  (*)CorundumFe2O3111565614640
Hercynite  (*)SpinelFe2+Al2O4610.6609.41115645407
Ilmenite  (*)CorundumFe2+Ti4+O34.93.2611156575433
Jacobsite  (*)SpinelMn2+Fe3+2O40.60.41115636172
Jörgkellerite  (*)JorgkelleriteNa3Mn3+3(PO4)2(CO3)O2·5H2O0.015011156471
Kalicinite  (*)NoneKH(CO3)0.015011156477
Kerimasite  (*)GarnetCa3Zr2(SiFe3+2)O120.60.43115636,115637,1156388
Kimzeyite  (*)GarnetCa3Zr2(SiAl2)O120.60.4111563617
Kogarkoite  (*)NoneNa3(SO4)F0.01502115642,11564714
Kyanite  (*)Not in a structural groupAl2OSiO43115653,115655,1156561507
Lamprophyllite  (*)None(SrNa)Ti2Na3Ti(Si2O7)2O2(OH)20.0150111564763
Larnite  (*)Not in a structural groupCa2(SiO4)0.0150111564748
Magnesio-hastingsite  (*)AmphiboleNaCa2(Mg4Fe3+)(Si6Al2)O22(OH)2111563280
Magnesioferrite  (*)SpinelMgFe3+2O40.60.4111563698
Magnesite  (*)CalciteMg(CO3)610.6609.411156451487
Magnetite  (*)SpinelFe2+Fe3+2O44.93.264115636,115647,115653,11565714899
Monohydrocalcite  (*)NoneCa(CO3)·H2O0.0150111564755
Monticellite  (*)OlivineCaMg(SiO4)0.01501115647153
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)20.01505115646,115647,115648,115655,11565617380
Nahcolite  (*)NoneNaH(CO3)0.0150111564778
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O11156501236
Neighborite  (*)PerovskiteNaMgF30.0150111564717
Nepheline  (*)TridymiteNa3K(Al4Si4O16)4.93.264115636,115647,115650,115657884
Niocalite  (*)WöhleriteCa7Nb(Si2O7)2O3F0.015011156473
Nyerereite  (*)FairchilditeNa2Ca(CO3)20.602115636,11564718
Omphacite  (*)Pyroxene(Ca,Na)(Mg,Fe,Al)Si2O6610.6609.41115645229
Opal  (*)AmorphousSiO2·nH2O11156342994
Oxo-magnesio-hastingsite  (*)AmphiboleNaCa2(Mg2Fe3+3)(Si6Al2)O22O211156323
Pargasite  (*)AmphiboleNaCa2(Mg4Al)(Si6Al2)O22(OH)2610.6609.43115643,115645,115648313
Pentlandite  (*)Pentlandite(Ni,Fe)9S80.015011156471512
Perovskite  (*)PerovskiteCaTiO34.93.263115636,115647,115657495
Phenakite  (*)PhenakiteBe2(SiO4)1115641326
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)2610.605115632,115641,115643,115647,1156482273
Pirssonite  (*)NoneNa2Ca(CO3)2·2H2O0.0150111564719
Pyrope  (*)GarnetMg3Al2(SiO4)3610.6609.41115645341
Pyrrhotite  (*)NickelineFe7S84.93.263115636,115647,1156579056
Quartz  (*)QuartzSiO22.207115631,115641,115646,115647,115651,115655,11565661156
Rutile  (*)RutileTiO22115641,1156565614
Sanidine  (*)FeldsparK(AlSi3O8)4.93.262115647,115657598
Schairerite  (*)NoneNa21(SO4)7ClF60.015011156474
Sellaite  (*)RutileMgF20.0150111564746
Shortite  (*)NoneNa2Ca2(CO3)30.0150111564737
Sodalite  (*)Cancrinite-sodalite SodaliteNa4(Si3Al3)O12Cl4.93.263115647,115651,115657444
Spessartine  (*)GarnetMn2+3Al2(SiO4)32115655,1156561214
Sphalerite  (*)SphaleriteZnS0.0150111564721482
Spinel  (*)SpinelMgAl2O40.01502115641,1156471934
Staurolite  (*)StauroliteFe2+2Al9Si4O23(OH)1115653978
Strontianite  (*)AragoniteSr(CO3)0.60.41115636589
Sulphohalite  (*)NoneNa6(SO4)2ClF0.60.411156364
Sulphur  (*)SulphurS0.015011156472045
Sylvite  (*)RocksaltKCl0.01501115647275
Thénardite  (*)NoneNa2(SO4)0.01501115647299
Thermonatrite  (*)NoneNa2(CO3)·H2O0.01502115642,11564764
Titanite  (*)TitaniteCaTi(SiO4)O4.93.262115647,1156574899
Trona  (*)NoneNa3(HCO3)(CO3)·2H2O0.01502115642,115647129
Villiaumite  (*)RocksaltNaF0.0150111564731
Witherite  (*)AragoniteBa(CO3)0.01501115647251
Wollastonite  (*)WollastoniteCaSiO34.93.262115647,1156571247
Zoisite  (*)EpidoteCa2Al3[Si2O7][SiO4]O(OH)610.6609.43115643,115645,1156481025



Locality Notes from all Ages at Locality:
Age IDLocality Notes
Jen_0000425carbonatite complex
Jen_0000428carbonatite complex
Jen_0000430carbonatite complex
Jen_0000432carbonatite complex
Jen_0000433carbonatite complex
Jen_0000559MAGMATIC STYLE: Lava flows and tuffs. ASSOCIATED SILICATE ROCKS: Phonolitic and nephelinitic tuffs and rare lavas including rare combeite- and melilite-bearing types. Xenolithic blocks include pyroxenite, ijolite series rocks, nepheline syenite and fenite.
Jen_0000576MAGMATIC STYLE: Tuffs on the Eyasi Plateau probably emanated from Sadiman and include the Laetoli Beds which contain approximately 25 carbonatite and 35 melilitite-carbonatite air-fall layers. ASSOCIATED SILICATE ROCKS: Nephelinitic tuffs and agglomerates with subsidiary lavas of nephelinite, melilite nephelinite, phonolitic trachyte and sodalite phonolite.
Jen_0000577MAGMATIC STYLE: Tuffs on the Eyasi Plateau probably emanated from Sadiman and include the Laetoli Beds which contain approximately 25 carbonatite and 35 melilitite-carbonatite air-fall layers. ASSOCIATED SILICATE ROCKS: Nephelinitic tuffs and agglomerates with subsidiary lavas of nephelinite, melilite nephelinite, phonolitic trachyte and sodalite phonolite.
Jen_0000578MAGMATIC STYLE: Tuffs on the Eyasi Plateau probably emanated from Sadiman and include the Laetoli Beds which contain approximately 25 carbonatite and 35 melilitite-carbonatite air-fall layers. ASSOCIATED SILICATE ROCKS: Nephelinitic tuffs and agglomerates with subsidiary lavas of nephelinite, melilite nephelinite, phonolitic trachyte and sodalite phonolite.
Michelle_0058Active volcano that produces natrocarbonatite lava.
Michelle_0066Active volcano that produces natrocarbonatite lava. Jorgkellerite occurs as a rare alteration mineral.


12 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
Jen_00004282.152.032.09±0.06        283002Arusha, Arusha Region, TanzaniaArushaErnst and Bell (2010)10.1007/s00710-009-0074-1MP98_55 
Jen_00004302.22.12.15±0.05K-Ar       283002Arusha, Arusha Region, TanzaniaArushaErnst and Bell (2010)10.1007/s00710-009-0074-1MP98_55 
Jen_00004250.60.40.6-0.4        208416Kerimasi Volcano, Arusha Region, TanzaniaKerimasiErnst and Bell (2010)10.1007/s00710-009-0074-1MP98_55 
Jen_0001538610.6609.4610 ± 0.6U-Pbage of formation of protolith rubyzircon   Zircon  211915Ruby Occurrence, Muriatata Hills, Longido, Arusha Region, TanzaniaLongido Ruby OccurenceGiuliani et al. (2007) GOGD37_23 
Jen_0000559000        14962Mt Oldoinyo Lengai (Ol Doinyo Lengai), Arusha Region, TanzaniaOldoinyo LengaiWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
Michelle_00580.0050.0020.005-0.002StratigraphyAge of natrocarbonatite      14962Mt Oldoinyo Lengai (Ol Doinyo Lengai), Arusha Region, TanzaniaMt Oldoinyo LengaiHay (1989)10.1016/0377-0273(89)90114-5JVGR37_77Oldest recognizable natrocarbonatite deposit at locality. Cone building began approximately 15,000 years ago but not evident that the gregoryite bearing natrocarbonatite was present.
Michelle_00660.01500.015-0.0 Age of Mt Oldoinyo Lengai volcanic activity      14962Mt Oldoinyo Lengai (Ol Doinyo Lengai), Arusha Region, TanzaniaMt Oldoinyo LengaiHay (1989)10.1016/0377-0273(89)90114-5JVGR37_77Volcano is still active. Cone building began approximately 15,000 years ago.
Jen_00004323.383.263.32±0.06K-Ar       240642Sadiman Volcano, Arusha Region, TanzaniaSadiman ComplexErnst and Bell (2010)10.1007/s00710-009-0074-1MP98_55 
Jen_00004334.94.14.5±0.4K-Ar       240642Sadiman Volcano, Arusha Region, TanzaniaSadiman ComplexErnst and Bell (2010)10.1007/s00710-009-0074-1MP98_55 
Jen_00005763.913.913.91        240642Sadiman Volcano, Arusha Region, TanzaniaSadimanWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
Jen_00005773.383.263.32±0.06K-Ar       240642Sadiman Volcano, Arusha Region, TanzaniaSadimanWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
Jen_00005784.94.14.5±0.4K-Ar       240642Sadiman Volcano, Arusha Region, TanzaniaSadimanWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 


SampleSource LocalityReference URL
FKM-68Longido, Arusha Region, Tanzaniahttps://www.rockptx.com/fkm-51-to-fkm-75/#FKM-68


All locality data graciously provided by mindat.org

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