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:
Ilomba Intrusion, Songwe Complex, Chitipa, Northern Region, Malawi

Oldest recorded age at locality: 1000
Youngest recorded age at locality: 444

mindat Locality ID: 26434
mindat URL: http://www.mindat.org/loc-26434.html

Tectonic Settings:

Total number of sublocalities beneath "Ilomba Intrusion, Songwe Complex, Chitipa, Northern Region, Malawi": 0
Total number of bottom-level sublocalities: 0

Latitude: 9°31'"S
Longitude: 33°11'0"E
Decimal Degree (lat, lon): -9.5166666666667,33.183333333333

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	Calcite	Cancrinite	Cancrinite-sodalite	Eudialyte	None	Pyrite	Pyroxene	Quartz	Sodalite
Spinel	Titanite	Tridymite	Zircon

Aegirine ()*	Augite ()*	Calcite ()*	Cancrinite ()*	Diopside ()*
Eudialyte ()*	Magnetite ()*	Nepheline ()*	Pyrite ()*	Quartz ()*
Riebeckite ()*	Sodalite ()*	Spinel ()*	Titanite ()*	Zircon ()*

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 C Ca Cl Fe H K Mg Na O S Si Ti Zr

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

Structural Groups for minerals in this locality:
Amphibole Calcite Cancrinite Cancrinite-sodalite Eudialyte None Pyrite Pyroxene Quartz Sodalite
Spinel Titanite Tridymite Zircon

15 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	1000	444	1022
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	1000	444	2060
Calcite ()*	Calcite	Ca(CO₃)	1000	444	27770
Cancrinite ()*	Cancrinite	(Na,Ca, )₈(Al₆Si₆)O₂₄(CO₃,SO₄)₂·2H₂O	1000	444	232
Diopside ()*	Pyroxene	CaMgSi₂O₆	1000	444	4135
Eudialyte ()*	Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂	1000	444	182
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	1000	444	14899
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)	1000	444	884
Pyrite ()*	Pyrite	FeS₂	1000	444	39462
Quartz ()*	Quartz	SiO₂	1000	444	61156
Riebeckite ()*	Amphibole	Na₂(Fe²⁺₃Fe³⁺₂)Si₈O₂₂(OH)₂	1000	444	375
Sodalite ()*	Cancrinite-sodalite Sodalite	Na₄(Si₃Al₃)O₁₂Cl	1000	444	444
Spinel ()*	Spinel	MgAl₂O₄	1000	444	1934
Titanite ()*	Titanite	CaTi(SiO₄)O	1000	444	4899
Zircon ()*	Zircon	Zr(SiO₄)	1000	444	5251

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-00427	1000	444	Late Proterozoic - Early Paleozoic											26434	Ilomba Intrusion, Songwe Complex, Chitipa, Northern Region, Malawi	Ilomba	Orris and Grauch (2002)		USGSOFR02_189

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...