Grey Autunian sediments near Permian basin north border.
Grey Autunian layers are in contact with Cambrian basement (overlain by Basal Autunian conglomerates) along a major EW fault.
Uranium (pitchblende+sulfides+sulfosalts) is heavily concentrated in grey Autunian and also in conglomerate (in association with bitumen).
A deep alterationoccurs along tectonic accidents.
Located 3 km SSE of Lodève.
Ref.:
- Eur. J. Mineral., 1993, 5, pp. 873-877.
- Henriot, O. and Leydet, J.C. (1998). "Le gisement de Mas d'Alary Village." Le Cahier des Micromonteurs(2),pp:13-26.
