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:
Bukusu Complex, Mbale District, Eastern Region, Uganda

Oldest recorded age at locality: 66
Youngest recorded age at locality: 2.6

mindat Locality ID: 274363
mindat URL: http://www.mindat.org/loc-274363.html

Tectonic Settings:

Total number of sublocalities beneath "Bukusu Complex, Mbale District, Eastern Region, Uganda": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Busumbu Deposit

Latitude: 0°49'47"N
Longitude: 34°16'8"E
Decimal Degree (lat, lon): 0.82972222222222,34.268888888889

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 Ca F Fe H Mg O P S Si Ti Zr 

Elements from minerals reported directly at this locality: Ca O Ti Zr 

Structural Groups for minerals in this locality: 
AluniteApatiteBaddeleyiteBaryteCalzirtiteClayCorundumDiasporeNoneSmectite-vermiculite
SpinelZircon

10 IMA Minerals at location:
Baddeleyite  (*)Baryte  (*)Calzirtite  (*)Crandallite  (*)Fluorapatite  (*)
Goethite  (*)Hematite  (*)Magnetite  (*)Vermiculite  (*)Zircon  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Baddeleyite  (*)BaddeleyiteZrO2662.61116857238
Baryte  (*)BaryteBa(SO4)662.6111685711547
Calzirtite  (*)CalzirtiteCa2Zr5Ti2O16662.6032
Crandallite  (*)AluniteCaAl3(PO4)(PO3OH)(OH)6662.61116857310
Fluorapatite  (*)ApatiteCa5(PO4)3F662.611168572740
Goethite  (*)DiasporeFeO(OH)662.611168577437
Hematite  (*)CorundumFe2O3662.6111685714640
Magnetite  (*)SpinelFe2+Fe3+2O4662.6111685714899
Vermiculite  (*)Clay Smectite-vermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4·8H2O662.61116857652
Zircon  (*)ZirconZr(SiO4)662.611168575251



Locality Notes from all Ages at Locality:
Age IDLocality Notes
Jen_0000400carbonatite complex with transitional alkali basalt composition
Jen_0000642MAGMATIC STYLE: Arcuate (?cone sheets) and irregular intrusions. ASSOCIATED SILICATE ROCKS: Melteigite, ijolite, pyroxenite, hornblendite, nepheline syenite, phoscorite, vent agglomerate, carbonated silicate rocks and K-rich fenites.
Jen_0000643MAGMATIC STYLE: Arcuate (?cone sheets) and irregular intrusions. ASSOCIATED SILICATE ROCKS: Melteigite, ijolite, pyroxenite, hornblendite, nepheline syenite, phoscorite, vent agglomerate, carbonated silicate rocks and K-rich fenites.
Jen_0000644MAGMATIC STYLE: Arcuate (?cone sheets) and irregular intrusions. ASSOCIATED SILICATE ROCKS: Melteigite, ijolite, pyroxenite, hornblendite, nepheline syenite, phoscorite, vent agglomerate, carbonated silicate rocks and K-rich fenites.


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_000040027.522.525±2.5K-Ar       274363Bukusu Complex, Mbale District, Eastern Region, UgandaBukusu ComplexErnst and Bell (2010)10.1007/s00710-009-0074-1MP98_55 
Jen_000064232.532.532.5        274363Bukusu Complex, Mbale District, Eastern Region, UgandaBukusuWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
Jen_000064327.522.525±2.5K-Ar biotite     274363Bukusu Complex, Mbale District, Eastern Region, UgandaBukusuWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
Jen_0000644404040Nd, Sr       274363Bukusu Complex, Mbale District, Eastern Region, UgandaBukusuWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
ree-00642662.6Tertiary        30485Busumbu Deposit, Bukusu Complex, Mbale District, Eastern Region, UgandaBukusu Complex (Busumbu, Busumu, Busuku)Orris and Grauch (2002) USGSOFR02_189 


SampleSource LocalityReference URL


All locality data graciously provided by mindat.org

All age data...

Other copyright data...