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:
Phalombe, Southern Region, Malawi

Oldest recorded age at locality: 140
Youngest recorded age at locality: 126

mindat Locality ID: 126538
mindat URL: http://www.mindat.org/loc-126538.html

Tectonic Settings:

Total number of sublocalities beneath "Phalombe, Southern Region, Malawi": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Songwe Hill REE Project (Songwe Hill Carbonatite)
Tundulu Complex

Latitude: 15°37'12"S
Longitude: 35°48'52"E
Decimal Degree (lat, lon): -15.62,35.814444444444

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	Baryte	Bastnäsite	Calcite	Corundum	Diaspore	Fluorite	Garnet	None
Not in a structural group	Parisite	Pyrite	Pyroxene	Quartz	Spinel	Titanite	Tridymite	Zircon

Aegirine ()*	Anatase ()*	Andradite ()*	Ankerite ()*	Baryte ()*
Bastnäsite-(Ce) ()*	Calcite ()*	Celestine ()*	Dolomite ()*	Fluorapatite ()*
Fluorite ()*	Goethite ()*	Ilmenite ()*	Magnetite ()*	Nepheline ()*
Parisite-(Ce) ()*	Pyrite ()*	Quartz ()*	Siderite ()*	Strontianite ()*
Synchysite-(Ce) ()*	Titanite ()*	Xenotime-(Y) ()*	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 Ba C Ca Ce F Fe H K Mg Na O P S Si Sr Ti Y Zr

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Apatite Aragonite Baryte Bastnäsite Calcite Corundum Diaspore Fluorite Garnet None
Not in a structural group Parisite Pyrite Pyroxene Quartz Spinel Titanite Tridymite Zircon

24 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
Aegirine ()*	Pyroxene	NaFe³⁺Si₂O₆	140	126	1	79966	1022
Anatase ()*	Not in a structural group	TiO₂	140	126	1	79966	2162
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	140	126	1	79966	1534
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	140	126	2	79965,79966	3092
Baryte ()*	Baryte	Ba(SO₄)	140	126	2	79965,79966	11547
Bastnäsite-(Ce) ()*	Bastnäsite	Ce(CO₃)F	140	126	1	79966	304
Calcite ()*	Calcite	Ca(CO₃)	140	126	2	79965,79966	27770
Celestine ()*	Baryte	Sr(SO₄)	140	126	1	79966	1252
Dolomite ()*	None	CaMg(CO₃)₂	140	126	1	79966	9895
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F			1	79965	2740
Fluorite ()*	Fluorite	CaF₂	140	126	2	79965,79966	9617
Goethite ()*	Diaspore	FeO(OH)	140	126	1	79966	7437
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	140	126	1	79966	5433
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	140	126	1	79966	14899
Nepheline ()*	Tridymite	Na₃K(Al₄Si₄O₁₆)			1	79965	884
Parisite-(Ce) ()*	Parisite	CaCe₂(CO₃)₃F₂	140	126	2	79965,79966	112
Pyrite ()*	Pyrite	FeS₂			1	79965	39462
Quartz ()*	Quartz	SiO₂	140	126	2	79965,79966	61156
Siderite ()*	Calcite	Fe(CO₃)	140	126	1	79966	6417
Strontianite ()*	Aragonite	Sr(CO₃)	140	126	2	79965,79966	589
Synchysite-(Ce) ()*	None	CaCe(CO₃)₂F	140	126	2	79965,79966	232
Titanite ()*	Titanite	CaTi(SiO₄)O	140	126	1	79966	4899
Xenotime-(Y) ()*	Zircon	Y(PO₄)			1	79965	939
Zircon ()*	Zircon	Zr(SiO₄)			1	79965	5251

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0000754	MAGMATIC STYLE: Arcuate dykes and sheets of massive carbonatite and carbonatite agglomerate at two centres. ASSOCIATED SILICATE ROCKS: Nepheline syenite, ijolite and feldspathoid-bearing carbonate-silicate rocks; dykes of nephelinite, melanephelinite, phonolite including analcime- and leucite-bearing varieties, sölvsbergite and carbonate-rich lamprophyres with pseudomorphs after melilite; sodic and potassic fenites.

Age ID

Locality Notes

Jen_0000754

MAGMATIC STYLE: Arcuate dykes and sheets of massive carbonatite and carbonatite agglomerate at two centres. ASSOCIATED SILICATE ROCKS: Nepheline syenite, ijolite and feldspathoid-bearing carbonate-silicate rocks; dykes of nephelinite, melanephelinite, phonolite including analcime- and leucite-bearing varieties, sölvsbergite and carbonate-rich lamprophyres with pseudomorphs after melilite; sodic and potassic fenites.

2 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_0000754	140	126	133	K-Ar			biotite							26431	Tundulu Complex, Phalombe, Southern Region, Malawi	Tundulu	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
	ree-00423	140	126	Late Jurassic-Early Cretaceous-- 133 ± 7 Ma (K-Ar, bio, sovite)	K-Ar			biotite							26431	Tundulu Complex, Phalombe, Southern Region, Malawi	Tundulu	Orris and Grauch (2002)		USGSOFR02_189

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...