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:
Nandi County, Kenya

Oldest recorded age at locality: 19.9
Youngest recorded age at locality: 5.5

mindat Locality ID: 290320
mindat URL: http://www.mindat.org/loc-290320.html

Tectonic Settings:

Total number of sublocalities beneath "Nandi County, Kenya": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Tinderet Volcano

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

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The 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.

Calcite	Fairchildite	Fluorite	None	Perovskite	Spinel

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: C Ca F Fe Mg Mn Na O Ti

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Calcite Fairchildite Fluorite None Perovskite Spinel

7 IMA Minerals at location:

Calcite ()*	Fluorite ()*	Jacobsite ()*	Magnesioferrite ()*	Magnetite ()*
Nyerereite ()*	Perovskite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Calcite ()*	Calcite	Ca(CO₃)	19.9	5.5	1	77730	27770
Fluorite ()*	Fluorite	CaF₂	19.9	5.5	1	77730	9617
Jacobsite ()*	Spinel	Mn²⁺Fe³⁺₂O₄	19.9	5.5	1	77730	172
Magnesioferrite ()*	Spinel	MgFe³⁺₂O₄	19.9	5.5	1	77730	98
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	19.9	5.5	1	77730	14899
Nyerereite ()*	Fairchildite	Na₂Ca(CO₃)₂	19.9	5.5	1	77730	18
Perovskite ()*	Perovskite	CaTiO₃	19.9	5.5	1	77730	495

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000415	carbonatite complex
Jen_0000605	MAGMATIC STYLE: Tuff and agglomerate. ASSOCIATED SILICATE ROCKS: Lavas and tuffs of basanite, tephrite, trachyte, phonolite, nephelinite and melilitite.
Jen_0000606	MAGMATIC STYLE: Tuff and agglomerate. ASSOCIATED SILICATE ROCKS: Lavas and tuffs of basanite, tephrite, trachyte, phonolite, nephelinite and melilitite.

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Sample Source	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
Jen_0000415	19.9	5.5	19.9-5.5	K-Ar		249667	Tinderet Volcano, Nandi County, Kenya	Tinderet Volcano	Ernst and Bell (2010)	10.1007/s00710-009-0074-1	MP98_55
Jen_0000605	12.6	12.6	12.6	K-Ar	whole rock, biotite	249667	Tinderet Volcano, Nandi County, Kenya	Tinderet and Londiani	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
Jen_0000606	19.9	5.5	19.9-5.5	K-Ar	whole rock, biotite	249667	Tinderet Volcano, Nandi County, Kenya	Tinderet and Londiani	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...