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La Villeder, Le Roc Saint-André, Morbihan, Brittany, France

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Name(s) in local language(s): "la mine" "mine de la Villeder" (ou Ville Der)
 
Pneumatolytic-hydrothermal quartz-cassiterite-beryl-arsenopyrite-molybdenite veins.
About 10 pits have been digged in the past from 1853 on, among them the "puit Saint Michel" 256m deep, with numerous galleries. All the pits are now flooded and secured. The works lasted from ~1856 to 1916, with only minor ore production. Probably worked in the Roman era.
The remaining buildings have been restored and turned in the recent years into a museum and a brewery.
An open cut ("la grande tranchée" ou "la grande carrière": "the great open cut " or "the great quarry")has been worked too: it still exists, but nowadays in a private property and collecting is prohibited.

Mineral List



56 entries listed. 51 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

- Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 886.
- Hubert, M. (1987). "Secteur stannifère de La Villeder." Le Cahier des Micromonteurs(3),pp:3.
-Pierrot, R., Chauris, L. et al. (1980) "Inventaire minéralogique de la France N°9" "Morbihan", éditions de BRGM, Orléans, pp 281-284
- De Ascencao Guedes, R. et al. (2001). "Les espèces minérales du district de La Villeder." Le Règne Minéral(Hors Série 7), 42-58.

Mineral and/or Locality  
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