Micaschists rich in carbonaceous materials.
Located 2.5 kilometers North of Saint-Cyprien-sur-Dourdou, East of N 601 road.
Ref.:
- Jacquemin, J. (1999). "Les gites minéraux de la basse vallée du Dourdou (Aveyron)." Minéraux et Fossiles, (277),pp:5-15.