References:- 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.
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http://www.strahlen.org/vp/it/cassagna/ 63 entries listed. 62 valid minerals. 2 type localities (valid minerals).