(Vallon du Rammersbach, Fellering, Vallée de la Thur (Vallée de Thann), Haut-Rhin, Alsace, France)
Ancient iron mines, dating back to the 19th century.
The mines were working the gossan zones of a quartz veins hosted by porphyritic granites. The minerals, mainly goethite, were irregularly distributed. The vein is split in two branches that rejoin after a distance of about 20 m, and this zone is not mineralised.
Located west of Fellering.
Ref.:
- J.-L. Hohl: "Minéraux et Mines du Massif Vosgien", Editions du Rhin (Mulhouse), 1994