(Miniera di Cassagna, Val Graveglia, Ne, Genova, Liguria, Italia)
Ref.:
- Marchesini, M. & Pagano, R. (2001): The Val Graveglia manganese district, Liguria, Italy. The Mineralogical Record, 32, 349-379; 415.
- Basso Ricardo, Carbone Cristina, Palenzona Andrea (2007) "Cassagnaite, a new mineral from Cassagna mine, Northern Apennines, Italy." GeoItalia September 2007.
- http://www.strahlen.org/vp/it/cassagna/cassagna.htm