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:
Nâm Nâm Xe REE Deposit, Mt Fansipan, Phong Tho District, Lai Chau Province, Vietnam

Oldest recorded age at locality: 47.5
Youngest recorded age at locality: 30

mindat Locality ID: 268630
mindat URL: http://www.mindat.org/loc-268630.html

Tectonic Settings:

Total number of sublocalities beneath "Nâm Nâm Xe REE Deposit, Mt Fansipan, Phong Tho District, Lai Chau Province, Vietnam": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
North Nâm Nâm Xe Carbonatite
South Nâm Nâm Xe Carbonatite

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

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.

Fluorite	None	Parisite

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: C Ca Ce F Fe O

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Fluorite None Parisite

4 IMA Minerals at location:

Ankerite ()*	Fluorite ()*	Parisite-(Ce) ()*	Synchysite-(Ce) ()*

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
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	47.5	30	1	294771	3092
Fluorite ()*	Fluorite	CaF₂	47.5	30	1	294771	9617
Parisite-(Ce) ()*	Parisite	CaCe₂(CO₃)₃F₂	47.5	30	1	294771	112
Synchysite-(Ce) ()*	None	CaCe(CO₃)₂F	47.5	30	1	294771	232

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Jen_0001163	The Phong Tho district covers 3,500 km2 across which are scattered the four carbonatite localities of Southern NamXe, Ban Mo, Northern NamXe and Then Thau-Ban Lang. MAGMATIC STYLE: Includes a volcano with extrusive carbonatites and irregular intrusions, dykes and veins. ASSOCIATED SILICATE ROCKS: Basaltic trachyandesite, trachyrhyolite, trachyte, leucitophyre, peralkaline syenites and granites; lamproites and lamprophyres.
Jen_0001164	The Phong Tho district covers 3,500 km2 across which are scattered the four carbonatite localities of Southern NamXe, Ban Mo, Northern NamXe and Then Thau-Ban Lang. MAGMATIC STYLE: Includes a volcano with extrusive carbonatites and irregular intrusions, dykes and veins. ASSOCIATED SILICATE ROCKS: Basaltic trachyandesite, trachyrhyolite, trachyte, leucitophyre, peralkaline syenites and granites; lamproites and lamprophyres.

Age ID

Locality Notes

Jen_0001163

The Phong Tho district covers 3,500 km2 across which are scattered the four carbonatite localities of Southern NamXe, Ban Mo, Northern NamXe and Then Thau-Ban Lang. MAGMATIC STYLE: Includes a volcano with extrusive carbonatites and irregular intrusions, dykes and veins. ASSOCIATED SILICATE ROCKS: Basaltic trachyandesite, trachyrhyolite, trachyte, leucitophyre, peralkaline syenites and granites; lamproites and lamprophyres.

Jen_0001164

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_0001163	30	30	30	Rb-Sr			phlogopite, k-feldspar			Yes				27053	Nâm Xe REE Deposit, Mt Fansipan, Phong Tho District, Lai Chau Province, Vietnam	Phong Tho	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796
	Jen_0001164	47.5	40.5	44±3.5	Rb-Sr			phlogopite, k-feldspar			Yes				27053	Nâm Xe REE Deposit, Mt Fansipan, Phong Tho District, Lai Chau Province, Vietnam	Phong Tho	Woolley and Kjarsgaard (2008)	10.4095/225115	GSCOF5796

All locality data graciously provided by mindat.org

All age data...