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:
Kerimasi Volcano, Arusha Region, Tanzania

Oldest recorded age at locality: 0.6
Youngest recorded age at locality: 0.4

mindat Locality ID: 208416
mindat URL: http://www.mindat.org/loc-208416.html

Tectonic Settings:

Total number of sublocalities beneath "Kerimasi Volcano, Arusha Region, Tanzania": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Kisete Crater
Loolmurwak Crater

Latitude: 2°25'53"S
Longitude: 34°58'50"E
Decimal Degree (lat, lon): -2.4313888888889,34.980555555556

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.

Apatite	Aragonite	Baddeleyite	Baryte	Calcite	Fairchildite	Fluorite	Garnet	Nickeline	None
Olivine	Perovskite	Spinel	Tridymite

Baddeleyite ()*	Baryte ()*	Calcite ()*	Cerianite-(Ce) ()*	Dolomite ()*
Fluorapatite ()*	Forsterite ()*	Franklinite ()*	Jacobsite ()*	Kerimasite ()*
Kimzeyite ()*	Magnesioferrite ()*	Magnetite ()*	Nepheline ()*	Nyerereite ()*
Perovskite ()*	Pyrrhotite ()*	Strontianite ()*	Sulphohalite ()*

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 Ce Cl F Fe K Mg Mn Na O P S Si Sr Ti Zn Zr

Elements from minerals reported directly at this locality: Al Ba C Ca Ce Cl F Fe K Mg Mn Na O P S Si Sr Ti Zn Zr

Structural Groups for minerals in this locality:
Apatite Aragonite Baddeleyite Baryte Calcite Fairchildite Fluorite Garnet Nickeline None
Olivine Perovskite Spinel Tridymite

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
Baddeleyite ()*	Baddeleyite	ZrO₂	0.6	0.4	0		238
Baryte ()*	Baryte	Ba(SO₄)	0.6	0.4	0		11547
Calcite ()*	Calcite	Ca(CO₃)	0.6	0.4	0		27770
Cerianite-(Ce) ()*	Fluorite	CeO₂	0.6	0.4	0		94
Dolomite ()*	None	CaMg(CO₃)₂	0.6	0.4	0		9895
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	0.6	0.4	0		2740
Forsterite ()*	Olivine	Mg₂(SiO₄)	0.6	0.4	0		1188
Franklinite ()*	Spinel	ZnFe³⁺₂O₄	0.6	0.4	0		52
Jacobsite ()*	Spinel	Mn²⁺Fe³⁺₂O₄	0.6	0.4	0		172
Kerimasite ()*	Garnet	Ca₃Zr₂(SiFe³⁺₂)O₁₂	0.6	0.4	2	115637,115638	8
Kimzeyite ()*	Garnet	Ca₃Zr₂(SiAl₂)O₁₂	0.6	0.4	0		17
Magnesioferrite ()*	Spinel	MgFe³⁺₂O₄	0.6	0.4	0		98
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	0.6	0.4	0		14899
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	0.6	0.4	0		884
Nyerereite ()*	Fairchildite	Na₂Ca(CO₃)₂	0.6	0.4	0		18
Perovskite ()*	Perovskite	CaTiO₃	0.6	0.4	0		495
Pyrrhotite ()*	Nickeline	Fe₇S₈	0.6	0.4	0		9056
Strontianite ()*	Aragonite	Sr(CO₃)	0.6	0.4	0		589
Sulphohalite ()*	None	Na₆(SO₄)₂ClF	0.6	0.4	0		4

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000425	carbonatite complex

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_0000425	0.6	0.4	0.6-0.4											208416	Kerimasi Volcano, Arusha Region, Tanzania	Kerimasi	Ernst and Bell (2010)	10.1007/s00710-009-0074-1	MP98_55

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...