Piolti, G. (1888): Sulla Cossaite del colle di Bousson (alta valle di Susa);
Osservazioni. Accademia delle Scienze di Torino, fasc. 48 (A. XXIII, 257) (?).
(TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.