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:
South Ruri, Ruri Complex, Homa Bay County, Kenya

Oldest recorded age at locality: 11
Youngest recorded age at locality: 4.1

mindat Locality ID: 209292
mindat URL: http://www.mindat.org/loc-209292.html

Tectonic Settings:

Total number of sublocalities beneath "South Ruri, Ruri Complex, Homa Bay County, Kenya": 0
Total number of bottom-level sublocalities: 0

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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 Fe K Na O Si 

Elements from minerals reported directly at this locality: Al Fe K Na O Si 

Structural Groups for minerals in this locality: 
NonePyroxeneTridymite

2 IMA Minerals at location:
Aegirine  (*)Nepheline  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Aegirine  (*)PyroxeneNaFe3+Si2O6114.101022
Nepheline  (*)TridymiteNa3K(Al4Si4O16)114.10884



Locality Notes from all Ages at Locality:
Age IDLocality Notes
Jen_0000410carbonatite complex
Jen_0000594MAGMATIC STYLE: Adjacent, deeply eroded volcanic complexes with cone sheets, dykes and many irregular intrusions. Also extrusive and intrusive tuffs and agglomerates. ASSOCIATED SILICATE ROCKS: Nepheline syenite, phonolite and melanephelinite; ijolite blocks in agglomerates; fenite.
Jen_0000595MAGMATIC STYLE: Adjacent, deeply eroded volcanic complexes with cone sheets, dykes and many irregular intrusions. Also extrusive and intrusive tuffs and agglomerates. ASSOCIATED SILICATE ROCKS: Nepheline syenite, phonolite and melanephelinite; ijolite blocks in agglomerates; fenite.


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
Jen_0000410114.111-4.1K-Ar    Yes  227741Ruri Complex, Homa Bay County, KenyaNorth and South RuriErnst and Bell (2010)10.1007/s00710-009-0074-1MP98_55 
Jen_00005947.57.57.5K-Ar whole rock  Yes  227741Ruri Complex, Homa Bay County, KenyaNorth and South RuriWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 
Jen_0000595114.111-4.1K-Ar whole rock  Yes  227741Ruri Complex, Homa Bay County, KenyaNorth and South RuriWoolley and Kjarsgaard (2008)10.4095/225115GSCOF5796 


SampleSource LocalityReference URL


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