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:
Tan Huong, Yenbai Province (Yen Bai Province), Vietnam

Oldest recorded age at locality: 24.8
Youngest recorded age at locality: 22.6

mindat Locality ID: 250147
mindat URL: http://www.mindat.org/loc-250147.html

Tectonic Settings:

Total number of sublocalities beneath "Tan Huong, Yenbai Province (Yen Bai Province), Vietnam": 0
Total number of bottom-level sublocalities: 0

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.

Calcite	Clay	Corundum	Humite	Mica	None	Spinel

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 F H K Mg O Si

Elements from minerals reported directly at this locality: Al C Ca F H K Mg O Si

Structural Groups for minerals in this locality:
Calcite Clay Corundum Humite Mica None Spinel

5 IMA Minerals at location:

Calcite ()*	Corundum ()*	Humite ()*	Phlogopite ()*	Spinel ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Calcite ()*	Calcite	Ca(CO₃)	24.8	22.6	27770
Corundum ()*	Corundum	Al₂O₃	24.8	22.6	1797
Humite ()*	Humite	Mg₇(SiO₄)₃F₂	24.8	22.6	80
Phlogopite ()*	Mica Clay	KMg₃(AlSi₃O₁₀)(OH)₂	23.8	22.6	2273
Spinel ()*	Spinel	MgAl₂O₄	24.8	22.6	1934

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
	Alexandra-0362	23.8	22.6	23.2 ± 0.6	40Ar/39A	Age of marble		phlogopite	TH1-1			Phlogopite			250147	Tan Huong, Yenbai Province (Yen Bai Province), Vietnam	Tan Huong	Garnier et al. (2002)	10.1016/S0009-2541(02)00063-3	CG188_33
	Alexandra-0363	24.8	24	24.4 ± 0.4	40Ar/39A	Age of schist		biotite	TH1-1a						250147	Tan Huong, Yenbai Province (Yen Bai Province), Vietnam	Tan Huong	Garnier et al. (2002)	10.1016/S0009-2541(02)00063-3	CG188_33

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...