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:
Tristan Da Cunha Island, Saint Helena

mindat Locality ID: 131875
mindat URL: http://www.mindat.org/loc-131875.html

Tectonic Settings:

Total number of sublocalities beneath "Tristan Da Cunha Island, Saint Helena": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Gough Island (Gonçalo Álvares Island)

Latitude: 40°19'3"S
Longitude: 9°56'54"W
Decimal Degree (lat, lon): -40.3175,-9.9483333333333

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.

Amphibole	Analcime	Cancrinite-sodalite	Corundum	Metavoltine	None	Olivine	Pyrochlore	Pyroxene	Sodalite
Spinel	Titanite	Tridymite

Aegirine ()*	Aegirine-augite ()*	Cryptohalite ()*	Forsterite ()*	Haüyne ()*
Hieratite ()*	Hydrokenoralstonite ()*	Ilmenite ()*	Kaersutite ()*	Leucite ()*
Magnetite ()*	Metavoltine ()*	Nepheline ()*	Sodalite ()*	Titanite ()*

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 Ca Cl F Fe H K Mg N Na O S Si Ti

Elements from minerals reported directly at this locality: Al Ca F Fe H K Mg N Na O S Si Ti

Structural Groups for minerals in this locality:
Amphibole Analcime Cancrinite-sodalite Corundum Metavoltine None Olivine Pyrochlore Pyroxene Sodalite
Spinel Titanite Tridymite

15 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	0		1022
Aegirine-augite ()*	Pyroxene	(Ca,Na)(Fe³⁺,Mg,Fe²⁺)Si₂O₆	1	104521	286
Cryptohalite ()*	None	(NH₄)₂SiF₆	0		14
Forsterite ()*	Olivine	Mg₂(SiO₄)	0		1188
Haüyne ()*	Sodalite Cancrinite-sodalite	Na₃Ca(Si₃Al₃)O₁₂(SO₄)	0		158
Hieratite ()*	None	K₂SiF₆	0		7
Hydrokenoralstonite ()*	Pyrochlore	₂Al₂F₆(H₂O)	0		56
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	0		5433
Kaersutite ()*	Amphibole	NaCa₂(Mg₃AlTi⁴⁺)(Si₆Al₂)O₂₂O₂	0		179
Leucite ()*	Analcime	K(AlSi₂O₆)	0		233
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1	104521	14899
Metavoltine ()*	Metavoltine	K₂Na₆Fe²⁺Fe³⁺₆O₂(SO₄)₁₂·18H₂O	0		78
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	1	104521	884
Sodalite ()*	Cancrinite-sodalite Sodalite	Na₄(Si₃Al₃)O₁₂Cl	1	104521	444
Titanite ()*	Titanite	CaTi(SiO₄)O	0		4899

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...