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:
Mt Tchivira, Lubango City Council, Huíla Province, Angola

Oldest recorded age at locality: 145
Youngest recorded age at locality: 66

mindat Locality ID: 72587
mindat URL: http://www.mindat.org/loc-72587.html

Tectonic Settings:

Total number of sublocalities beneath "Mt Tchivira, Lubango City Council, Huíla Province, Angola": 0
Total number of bottom-level sublocalities: 0

Latitude: 14°19'"S
Longitude: 13°52'59"E
Decimal Degree (lat, lon): -14.316666666667,13.883055555556
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 F Fe H K Mg Na Nb O S Si Ti Y Zr 

Elements from minerals reported directly at this locality: Al Ba C Ca F Fe H K Mg Na Nb O S Si Ti Y Zr 

Structural Groups for minerals in this locality: 
AmphiboleAnalcimeBaryteCalciteCancriniteClayFeldsparMicaNoneOlivine
PyritePyroxeneQuartzSpinelTitaniteTridymiteWöhleriteZirconolite

25 IMA Minerals at location:
Aegirine  (*)Albite  (*)Analcime  (*)Ankerite  (*)Anorthite  (*)
Baryte  (*)Calcite  (*)Cancrinite  (*)Diopside  (*)Dolomite  (*)
Ferro-pargasite  (*)Forsterite  (*)Hastingsite  (*)Kaersutite  (*)Katophorite  (*)
Magnetite  (*)Nepheline  (*)Orthoclase  (*)Phlogopite  (*)Pyrite  (*)
Quartz  (*)Sanidine  (*)Titanite  (*)Wöhlerite  (*)Zirconolite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aegirine  (*)PyroxeneNaFe3+Si2O61456601022
Albite  (*)FeldsparNa(AlSi3O8)1456608803
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O1456601627
Ankerite  (*)NoneCa(Fe2+,Mg)(CO3)21456603092
Anorthite  (*)FeldsparCa(Al2Si2O8)1456601036
Baryte  (*)BaryteBa(SO4)14566011547
Calcite  (*)CalciteCa(CO3)14566027770
Cancrinite  (*)Cancrinite(Na,Ca,   )8(Al6Si6)O24(CO3,SO4)2·2H2O145660232
Diopside  (*)PyroxeneCaMgSi2O61456604135
Dolomite  (*)NoneCaMg(CO3)21456609895
Ferro-pargasite  (*)AmphiboleNaCa2(Fe2+4Al)(Si6Al2)O22(OH)214566054
Forsterite  (*)OlivineMg2(SiO4)1456601188
Hastingsite  (*)AmphiboleNaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2145660209
Kaersutite  (*)AmphiboleNaCa2(Mg3AlTi4+)(Si6Al2)O22O2145660179
Katophorite  (*)AmphiboleNa(NaCa)(Mg4Al)(Si7Al)O22(OH)214566046
Magnetite  (*)SpinelFe2+Fe3+2O414566014899
Nepheline  (*)TridymiteNa3K(Al4Si4O16)145660884
Orthoclase  (*)FeldsparK(AlSi3O8)1456602349
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)21456602273
Pyrite  (*)PyriteFeS214566039462
Quartz  (*)QuartzSiO214566061156
Sanidine  (*)FeldsparK(AlSi3O8)145660598
Titanite  (*)TitaniteCaTi(SiO4)O1456604899
Wöhlerite  (*)WöhleriteNa2Ca4Zr(Nb,Ti)(Si2O7)2(O,F)414566083
Zirconolite  (*)Zirconolite(Ca,Y)Zr(Ti,Mg,Al)2O7145660140


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Jen_0000750MAGMATIC STYLE: Major arcuate intrusions. ASSOCIATED SILICATE ROCKS: Nepheline syenite, syenite, melteigite, ijolite, urtite, gabbro, feldspathic breccia and fenite; tephritic and phonolitic dykes.
Jen_0000751MAGMATIC STYLE: Major arcuate intrusions. ASSOCIATED SILICATE ROCKS: Nepheline syenite, syenite, melteigite, ijolite, urtite, gabbro, feldspathic breccia and fenite; tephritic and phonolitic dykes.
Jen_0000752MAGMATIC STYLE: Major arcuate intrusions. ASSOCIATED SILICATE ROCKS: Nepheline syenite, syenite, melteigite, ijolite, urtite, gabbro, feldspathic breccia and fenite; tephritic and phonolitic dykes.
Jen_0000753MAGMATIC STYLE: Major arcuate intrusions. ASSOCIATED SILICATE ROCKS: Nepheline syenite, syenite, melteigite, ijolite, urtite, gabbro, feldspathic breccia and fenite; tephritic and phonolitic dykes.


5 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_0000750133133133Rb-Sr feldspar, mica     72587Mt Tchivira, Lubango City Council, Huíla Province, AngolaTchiviraWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796Bonga coeval with Tchivira
Jen_0000751134.8126.8130.8±1.4Rb-Sr feldspar, mica     72587Mt Tchivira, Lubango City Council, Huíla Province, AngolaTchiviraWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796Bonga coeval with Tchivira
Jen_0000752138138138K-Ar biotite, pyroxene     72587Mt Tchivira, Lubango City Council, Huíla Province, AngolaTchiviraWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796Bonga coeval with Tchivira
Jen_0000753130130130K-Ar biotite, pyroxene     72587Mt Tchivira, Lubango City Council, Huíla Province, AngolaTchiviraWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796Bonga coeval with Tchivira
ree-0001014566Cretaceous        72587Mt Tchivira, Lubango City Council, Huíla Province, AngolaTchivira (Chivara, Quicuco)Orris and Grauch (2002) USGSOFR02_189 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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