This deposit has also produced exceptional specimens of tinzenite, sursassite and ganophyllite.
During that period nice specimens of tinzenite, sursassite and rhodonite were relatively common, and rare species were also found from time to time.
The "lean ore" is sometimes crossed by veins up to 80 cm wide and up to several tens of meters in length; this kind of vein yielded carpholite, native copper, sulfides, and probably the world's best specimens of tinzenite, sursassite and ganophyllite.
Excellent rhodonite and rhodochrosite specimens were collected, and also very nice sursassite, goldmanite, manganaxinite, tinzenite and neotocite.
It was one of the first minerals to crystallize, sometimes followed by sursassite, tinzenite and carbonates.
Some brown lamellae were found at the Molinello mine in quartz veins, associated with sursassite and ganophyllite.
Notable quartz specimens from the Gambatesa and Molinello mines show inclusions of sursassite, copper and piemontite (Antofilli et al.
At the Gambatesa mine, fine sursassite has also been found, and some specimens collected in 1997 are among the best from Val Graveglia.
Occurrence: In manganese ore consisting of braunite, rhodonite, spessartine, tinzenite, parsettensite, sursassite
and strontian piemontite in radiolarites.