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:
Le Plessis, St Hilaire, Mortagne-sur-Sèvre, Vendée, Pays De La Loire, France

Oldest recorded age at locality: 296
Youngest recorded age at locality: 210

mindat Locality ID: 19660
mindat URL: http://www.mindat.org/loc-19660.html

Tectonic Settings:

Total number of sublocalities beneath "Le Plessis, St Hilaire, Mortagne-sur-Sèvre, Vendée, Pays De La Loire, France": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Le Bourdet

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.

Autunite	Corundum	None	Quartz

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 Fe H Mg O P Si U V

Elements from minerals reported directly at this locality: Al Fe H Mg O P Si U

Structural Groups for minerals in this locality:
Autunite Corundum None Quartz

6 IMA Minerals at location:

Autunite ()*	Hematite ()*	Quartz ()*	Sabugalite ()*	Saléeite ()*
Tyuyamunite ()*

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
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O	296	296	1	56642	1272
Hematite ()*	Corundum	Fe₂O₃	296	210	0		14640
Quartz ()*	Quartz	SiO₂	296	210	0		61156
Sabugalite ()*	None	HAl(UO₂)₄(PO₄)₄·16H₂O	296	296	0		87
Saléeite ()*	None	Mg(UO₂)₂(PO₄)₂(H₂O)₁₀	296	296	0		95
Tyuyamunite ()*	None	Ca(UO₂)₂(VO₄)₂·5-8H₂O	296	296	1	56642	628

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Giersdorf_00000657	The La Commanderie Mine locality is found within the Mortagne mining district. The mine is responsible for the production of 3300 tons of Uranium metal. It is part of the Armorican Massif. The Mortagne district is also associated with the Deux-Sèvres area, all part of the Armorican Massif
Giersdorf_00000657a	The La Commanderie Mine locality is found within the Mortagne mining district. The mine is responsible for the production of 3300 tons of Uranium metal. It is part of the Armorican Massif. The Mortagne district is also associated with the Deux-Sèvres area, all part of the Armorican Massif
Giersdorf_00000658	The L'Ecarpière locality is found within the Mortagne mining district. The mine is responsible for the production of 3120 tons of Uraniium metal. It is part of the Armorican Massif.
Giersdorf_00000658a	The L'Ecarpière locality is found within the Mortagne mining district. The mine is responsible for the production of 3120 tons of Uraniium metal. It is part of the Armorican Massif.
Giersdorf_00000659	The Le Chardon locality is found within the Mortagne mining district. The mine is responsible for the production of 2745 tons of Uranium metal. It is part of the Armorican Massif.
Giersdorf_00000659a	The Le Chardon locality is found within the Mortagne mining district. The mine is responsible for the production of 2745 tons of Uranium metal. It is part of the Armorican Massif.

8 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	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
Giersdorf_00000657	290	270	290-270	U-Pb	The age of mineralization being post-cooling of the 300-340 Ma granite bodies restricts the formation of the Uranium minerals to being genetically derived.				Yes			U	32248	La Commanderie Mine, Le Temple, Deux-Sèvres, Nouvelle-Aquitaine, France	La Commanderie Mine	Chauris et al. (1994)		PMGFRA_243	Age of the uranium mineralization in the Armorican Massif is associated with Hercynian peraluminous granites. From pg. 262: "The precise chronology of these mineralizations is not well established. The uranium veins appear to be the oldest (290-270 Ma by U/Pb dating) but underwent late remobilization processes."
Giersdorf_00000657a	230	210	230-210	K-Ar	The age of mineralization being post-cooling of the 300-340 Ma granite bodies restricts the formation of the Uranium minerals to being genetically derived.				Yes			Pb, Zn	32248	La Commanderie Mine, Le Temple, Deux-Sèvres, Nouvelle-Aquitaine, France	La Commanderie Mine	Chauris et al. (1994)		PMGFRA_243	from pg 262: "The lead-zinc veins (230-210 Ma, K-Ar dating) seem to be the youngest and the antimony veins are of intermediate age"
Giersdorf_00000658	290	270	290-270	U-Pb	The age of mineralization being post-cooling of the 300-340 Ma granite bodies restricts the formation of the Uranium minerals to being genetically derived.				Yes			U	19663	L'Ecarpière, Gétigné, Loire-Atlantique, Pays De La Loire, France	L'Ecarpière	Chauris et al. (1994)		PMGFRA_243	Age of the uranium mineralization in the Armorican Massif is associated with Hercynian peraluminous granites. From pg. 262: "The precise chronology of these mineralizations is not well established. The uranium veins appear to be the oldest (290-270 Ma by U/Pb dating) but underwent late remobilization processes."
Giersdorf_00000658a	230	210	230-210	K-Ar	The age of mineralization being post-cooling of the 300-340 Ma granite bodies restricts the formation of the Uranium minerals to being genetically derived.				Yes			Pb, Zn	19663	L'Ecarpière, Gétigné, Loire-Atlantique, Pays De La Loire, France	L'Ecarpière	Chauris et al. (1994)		PMGFRA_243	from pg 262: "The lead-zinc veins (230-210 Ma, K-Ar dating) seem to be the youngest and the antimony veins are of intermediate age"
Giersdorf_00000951	296	296	296	U-Pb			uraninite	P-1	Yes	Uraninite	Uraninite	U	23933	Vendée, Pays De La Loire, France	Vendee	Eikenberg et al. (1993)	10.1016/0016-7037(93)90040-4	GCA57_1053	Pb207/Pb206 Isotope age for Uraninite Sample
Giersdorf_00000952	296	296	296	U-Pb	formation age	high	uraninite	P-1	Yes	Uraninite	Uraninite	U	23933	Vendée, Pays De La Loire, France	Vendee	Eikenberg et al. (1993)	10.1016/0016-7037(93)90040-4	GCA57_1053	Age given as the Formation Age of the locality
Giersdorf_00000659	290	270	290-270	U-Pb	The age of mineralization being post-cooling of the 300-340 Ma granite bodies restricts the formation of the Uranium minerals to being genetically derived.				Yes			U	146744	Mortagne-sur-Sèvre, Vendée, Pays De La Loire, France	Le Chardon	Chauris et al. (1994)		PMGFRA_243	Age of the uranium mineralization in the Armorican Massif is associated with Hercynian peraluminous granites. From pg. 262: "The precise chronology of these mineralizations is not well established. The uranium veins appear to be the oldest (290-270 Ma by U/Pb dating) but underwent late remobilization processes."
Giersdorf_00000659a	230	210	230-210	K-Ar	The age of mineralization being post-cooling of the 300-340 Ma granite bodies restricts the formation of the Uranium minerals to being genetically derived.				Yes			Pb, Zn	146744	Mortagne-sur-Sèvre, Vendée, Pays De La Loire, France	Le Chardon	Chauris et al. (1994)		PMGFRA_243	from pg 262: "The lead-zinc veins (230-210 Ma, K-Ar dating) seem to be the youngest and the antimony veins are of intermediate age"

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...