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:
Okorusu Mine (Okarusu Mine), Otjiwarongo, Otjozondjupa Region, Namibia

Oldest recorded age at locality: 133.9
Youngest recorded age at locality: 119.3

mindat Locality ID: 5842
mindat URL: http://www.mindat.org/loc-5842.html

Tectonic Settings:

Total number of sublocalities beneath "Okorusu Mine (Okarusu Mine), Otjiwarongo, Otjozondjupa Region, Namibia": 0
Total number of bottom-level sublocalities: 0

Latitude: 20°3'"S
Longitude: 16°44'42"E
Decimal Degree (lat, lon): -20.05,16.745
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 Cu F Fe H K Mg Na O P Pb S Si Sr Th Ti Y Zn 

Elements from minerals reported directly at this locality: Al Ba C Ca Cu F Fe H K Mg Na O P Pb S Si Sr Th Ti Y Zn 

Structural Groups for minerals in this locality: 
ApatiteAragoniteBaryteCalciteCancriniteChalcopyriteClayCorundumDiasporeFluorite
GarnetMicaNickelineNonePyritePyroxeneQuartzRocksaltSphaleriteSpinel
TitaniteTridymiteZircon

25 IMA Minerals at location:
Aegirine  (*)Aegirine-augite  (*)Andradite  (*)Baryte  (*)Calcite  (*)
Cancrinite  (*)Celestine  (*)Chalcopyrite  (*)Diopside  (*)Fluorapatite  (*)
Fluorite  (*)Galena  (*)Goethite  (*)Hematite  (*)Magnetite  (*)
Nepheline  (*)Phlogopite  (*)Pyrite  (*)Pyrrhotite  (*)Quartz  (*)
Sphalerite  (*)Strontianite  (*)Thorite  (*)Titanite  (*)Xenotime-(Y)  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aegirine  (*)PyroxeneNaFe3+Si2O6133.9119.301022
Aegirine-augite  (*)Pyroxene(Ca,Na)(Fe3+,Mg,Fe2+)Si2O6133.9119.30286
Andradite  (*)GarnetCa3Fe3+2(SiO4)3133.9119.301534
Baryte  (*)BaryteBa(SO4)133.9119.3011547
Calcite  (*)CalciteCa(CO3)133.9119.3027770
Cancrinite  (*)Cancrinite(Na,Ca,   )8(Al6Si6)O24(CO3,SO4)2·2H2O133.9119.30232
Celestine  (*)BaryteSr(SO4)133.9119.301252
Chalcopyrite  (*)ChalcopyriteCuFeS2133.9119.3027198
Diopside  (*)PyroxeneCaMgSi2O6133.9119.304135
Fluorapatite  (*)ApatiteCa5(PO4)3F133.9119.302740
Fluorite  (*)FluoriteCaF2133.9119.309617
Galena  (*)RocksaltPbS133.9119.3024243
Goethite  (*)DiasporeFeO(OH)133.9119.307437
Hematite  (*)CorundumFe2O3133.9119.3014640
Magnetite  (*)SpinelFe2+Fe3+2O4133.9119.3014899
Nepheline  (*)TridymiteNa3K(Al4Si4O16)133.9119.30884
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)2133.9119.302273
Pyrite  (*)PyriteFeS2133.9119.3039462
Pyrrhotite  (*)NickelineFe7S8133.9119.309056
Quartz  (*)QuartzSiO2133.9119.3061156
Sphalerite  (*)SphaleriteZnS133.9119.3021482
Strontianite  (*)AragoniteSr(CO3)133.9119.30589
Thorite  (*)ZirconTh(SiO4)133.9119.301006
Titanite  (*)TitaniteCaTi(SiO4)O133.9119.304899
Xenotime-(Y)  (*)ZirconY(PO4)133.9119.30939


Locality Notes from all Ages at Locality:
Age IDLocality Notes
Jen_0000739MAGMATIC STYLE: Small plugs ASSOCIATED SILICATE ROCKS: Monzonite, syenite, nepheline syenite, nephelinite, pyroxenite, iron deposits and fenite.


2 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_0000739133.9119.3126.6±7.3Rb-Sr       5842Okorusu Mine (Okarusu Mine), Otjiwarongo, Otjozondjupa Region, NamibiaOkorusuWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
ree-00481133.9119.3Early Cretaceous-- 126.6 ± 7.3 Ma (Rb-Sr)Rb-Sr       5842Okorusu Mine (Okarusu Mine), Otjiwarongo, Otjozondjupa Region, NamibiaOkorusu ComplexOrris and Grauch (2002) USGSOFR02_189 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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