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:
Nosy Komba, Nosy Be, Diana, Madagascar

Oldest recorded age at locality: 10.4
Youngest recorded age at locality: 10.4

mindat Locality ID: 191202
mindat URL: http://www.mindat.org/loc-191202.html

Tectonic Settings:

Total number of sublocalities beneath "Nosy Komba, Nosy Be, Diana, Madagascar": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Ampangorinana

Latitude: 13°26'42"S
Longitude: 48°20'53"E
Decimal Degree (lat, lon): -13.445,48.348055555556

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.

Analcime	Eudialyte	None	Pyroxene	Tridymite	Wöhlerite

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 Mn Na Nb O Si Ti Zr

Elements from minerals reported directly at this locality: Al Ca F Fe H K Mn Na Nb O Si Ti Zr

Structural Groups for minerals in this locality:
Analcime Eudialyte None Pyroxene Tridymite Wöhlerite

6 IMA Minerals at location:

Aegirine ()*	Analcime ()*	Eudialyte ()*	Låvenite ()*	Leucite ()*
Nepheline ()*

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
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	10.4	10.4	1	79317	1022
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	10.4	10.4	0		1627
Eudialyte ()*	Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂	10.4	10.4	1	79317	182
Låvenite ()*	Wöhlerite	(Na,Ca)₄(Mn²⁺,Fe²⁺)₂(Zr,Ti,Nb)₂(Si₂O₇)₂(O,F)₄	10.4	10.4	0		58
Leucite ()*	Analcime	K(AlSi₂O₆)	10.4	10.4	0		233
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	10.4	10.4	1	79317	884

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
	ree-00416	10.4	10.4	10.4 Ma											191202	Nosy Komba, Nosy Be, Diana, Madagascar	Nosy Komba	Orris and Grauch (2002)		USGSOFR02_189

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...