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:
Lignol, Morbihan, Brittany, France

Oldest recorded age at locality: 290
Youngest recorded age at locality: 210

mindat Locality ID: 155611
mindat URL: http://www.mindat.org/loc-155611.html

Tectonic Settings:

Total number of sublocalities beneath "Lignol, Morbihan, Brittany, France": 8
Total number of bottom-level sublocalities: 6

Number of Child Localities: 6
Child Localities:
Keriar
Kerlec'h (Kerler)
Kerségalec
Le Henguer (Le Hinguer)
Penderff Hamlet
Saint-Yves

Latitude: 48°0'58"N
Longitude: 3°16'13"W
Decimal Degree (lat, lon): 48.016111111111,-3.2702777777778

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.

Arsenic	Autunite	Chalcopyrite	Copper	Covellite	Diaspore	Fluorite	Marcasite	None	Not in a structural group
Phosphuranylite	Pyrite	Quartz	Rhabdophane	Rocksalt	Stibnite	Wölsendorfite

Anatase ()*	Autunite ()*	Bismuth ()*	Bismuthinite ()*	Chalcocite ()*
Chalcopyrite ()*	Copper ()*	Covellite ()*	Cuprite ()*	Curite ()*
Dewindtite ()*	Galena ()*	Goethite ()*	Kasolite ()*	Marcasite ()*
Ningyoite ()*	Phosphuranylite ()*	Pyrite ()*	Quartz ()*	Sabugalite ()*
Torbernite ()*	Uraninite ()*	Uranocircite-II ()*	Uranophane-α ()*	Uranosphaerite ()*
Wölsendorfite ()*	Zeunerite ()*

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 As Ba Bi Ca Ce Cu Fe H K O P Pb S Si Ti U

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Arsenic Autunite Chalcopyrite Copper Covellite Diaspore Fluorite Marcasite None Not in a structural group
Phosphuranylite Pyrite Quartz Rhabdophane Rocksalt Stibnite Wölsendorfite

27 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
Anatase ()*	Not in a structural group	TiO₂	290	210	1	53343	2162
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O	290	270	5	53342,53343,53344,53345,53348	1272
Bismuth ()*	Arsenic	Bi	290	210	1	53343	1966
Bismuthinite ()*	Stibnite	Bi₂S₃	290	210	1	53343	1935
Chalcocite ()*	None	Cu₂S			1	53342	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	290	210	2	53342,53343	27198
Copper ()*	Copper	Cu	290	210	1	53343	3846
Covellite ()*	Covellite	CuS	290	210	1	53343	4165
Cuprite ()*	Not in a structural group	Cu₂O	290	210	1	53343	2970
Curite ()*	None	Pb_3+x[(UO₂)₄O_4+x(OH)_3-x]₂·2H₂O			1	53344	51
Dewindtite ()*	Phosphuranylite	H₂Pb₃(UO₂)₆O₄(PO₄)₄·12H₂O	290	210	4	53342,53343,53344,53345	82
Galena ()*	Rocksalt	PbS	230	210	2	53343,53344	24243
Goethite ()*	Diaspore	FeO(OH)	290	210	1	53343	7437
Kasolite ()*	None	Pb(UO₂)(SiO₄)·H₂O			1	53344	198
Marcasite ()*	Marcasite	FeS₂	290	210	1	53343	5674
Ningyoite ()*	Rhabdophane	(U,Ca,Ce)₂(PO₄)₂·1-2H₂O	290	270	1	53343	33
Phosphuranylite ()*	Phosphuranylite	KCa(H₃O)₃(UO₂)₇(PO₄)₄O₄·8H₂O	290	270	3	53343,53344,53345	182
Pyrite ()*	Pyrite	FeS₂	290	210	4	53342,53343,53344,53348	39462
Quartz ()*	Quartz	SiO₂	290	210	6	53342,53343,53344,53345,53346,53348	61156
Sabugalite ()*	None	HAl(UO₂)₄(PO₄)₄·16H₂O			1	53342	87
Torbernite ()*	None	Cu(UO₂)₂(PO₄)₂·12H₂O	290	270	4	53343,53344,53345,53348	1059
Uraninite ()*	Fluorite	UO₂	290	270	4	53343,53344,53345,53346	2718
Uranocircite-II ()*	None	Ba(UO₂)₂(PO₄)₂·10H₂O			1	53344	89
Uranophane-α ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O	290	270	3	53343,53344,53345	890
Uranosphaerite ()*	None	Bi(UO₂)O₂(OH)			1	53344	18
Wölsendorfite ()*	Wölsendorfite	Pb₇(UO₂)₁₄O₁₉(OH)₄·12H₂O			1	53344	43
Zeunerite ()*	Autunite	Cu(UO₂)₂(AsO₄)₂·12H₂O			1	53342	185

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Giersdorf_00000656	The Kerlec'h locality is found within the Pontivy region of France. It is responsible for producing 400 tons of Uranium metal. Uranium in the Pontivy district is usually found intragranitic, the granite is cut by a system of transverse mineralized fractures, preferentially located on the northern part of the Massif. It is within the fractures that the Uranium can be found.
Giersdorf_00000656a	The Kerlec'h locality is found within the Pontivy region of France. It is responsible for producing 400 tons of Uranium metal. Uranium in the Pontivy district is usually found intragranitic, the granite is cut by a system of transverse mineralized fractures, preferentially located on the northern part of the Massif. It is within the fractures that the Uranium can be found.

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
	Giersdorf_00000656	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.								U	19712	Kerlec'h (Kerler), Lignol, Morbihan, Brittany, France	Kerlec'h	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_00000656a	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.								Pb, Zn	19712	Kerlec'h (Kerler), Lignol, Morbihan, Brittany, France	Kerlec'h	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...