“The largest known tetraedrite crystal (53x42x40) from this deposit that shows this unique elongated truncated pseudo octahedron crystal habit. It was probably collected in the first part of XIXst century and was a part of the collection of Mr Louis Faure, notary in Bourg d'OIsans (Isère) There is a specimen of the same kind, of better condition but much smaller, in the Smithsonian Museum.”