Ref.: G. Demarcq, 1973, "Guides Géologiques Régionaux : Lyonnais, Vallée du Rhône" , p. 124, Masson.
Dévés hill, Vallon du Rozet.
Upper Aptian (Clansayesian) reddish-yellow sandstones with white phosphate nodules.
Mineral List:2 entries listed.
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