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:
Taita-Taveta County, Kenya

Oldest recorded age at locality: 618
Youngest recorded age at locality: 606

mindat Locality ID: 216999
mindat URL: http://www.mindat.org/loc-216999.html

Tectonic Settings:

Total number of sublocalities beneath "Taita-Taveta County, Kenya": 17
Total number of bottom-level sublocalities: 12

Number of Child Localities: 4
Child Localities:
Chawia Mine
Mangari
Voi
Yellow Tourmaline Mine

Latitude: 3°45'"S
Longitude: 38°27'0"E
Decimal Degree (lat, lon): -3.75,38.45

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.

Amorphous	Amphibole	Calcite	Clay	Corundum	Garnet	Kaolinite	Kornerupine	Mica	None
Not in a structural group	Sapphirine	Spinel	Titanite	Tourmaline	Turquoise

Corundum ()*	Dravite ()*	Graphite ()*	Grossular ()*	Hematite ()*
Kaolinite ()*	Kornerupine ()*	Kyanite ()*	Magnesite ()*	Magnetite ()*
Muscovite ()*	Opal ()*	Phlogopite ()*	Sapphirine ()*	Sillimanite ()*
Spinel ()*	Titanite ()*	Tremolite ()*	Turquoise ()*

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 B C Ca Cu F Fe H K Mg Na O P Si Ti

Elements from minerals reported directly at this locality: Al C H Mg O Si

Structural Groups for minerals in this locality:
Amorphous Amphibole Calcite Clay Corundum Garnet Kaolinite Kornerupine Mica None
Not in a structural group Sapphirine Spinel Titanite Tourmaline Turquoise

19 IMA Minerals at location:

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
Corundum ()*	Corundum	Al₂O₃	618	606	6	77745,77746,77749,77757,77758,77759	1797
Dravite ()*	Tourmaline	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)			2	77752,77760	648
Graphite ()*	None	C			4	77744,77746,77750,77758	2812
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃			3	77749,77750,77754	1544
Hematite ()*	Corundum	Fe₂O₃			1	77746	14640
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	618	606	0		5591
Kornerupine ()*	Kornerupine	(Mg,Fe²⁺,Al, )₁₀(Si,Al,B)₅O₂₁(OH,F)₂			1	77745	68
Kyanite ()*	Not in a structural group	Al₂OSiO₄			1	77745	1507
Magnesite ()*	Calcite	Mg(CO₃)	618	606	0		1487
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			1	77745	14899
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	77746	17380
Opal ()*	Amorphous	SiO₂·nH₂O			1	77755	2994
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂			1	77746	2273
Sapphirine ()*	Sapphirine	Mg₄(Mg₃Al₉)O₄[Si₃Al₉O₃₆]			1	77745	129
Sillimanite ()*	Not in a structural group	Al₂SiO₅			2	77746,77758	1516
Spinel ()*	Spinel	MgAl₂O₄	618	606	1	77749	1934
Titanite ()*	Titanite	CaTi(SiO₄)O			1	77745	4899
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂			1	77745	2562
Turquoise ()*	Turquoise	CuAl₆(PO₄)₄(OH)₈·4H₂O	618	606	1	77749	484

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Jen_0001537	618	606	612 ± 6	U-Pb	age of formation of protolith ruby		zircon				Zircon			26484	John Saul Mine (Rockland Mine), Tsavo West, Voi, Taita-Taveta County, Kenya	John Saul Mine	Giuliani et al. (2007)		GOGD37_23

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...