Cannonite
Alfenza Mine, Crodo, Verbano-Cusio-Ossola Province, Piedmont, Italy
good sphaeres (formed by little crystals) of pale brown cannonite
up to 0.8 mm (very rare in this old mine,
In Alfenza mine cannonite is associated with native gold, pyrite and cosalite)
Photo Enrico Bonacina, Collection Domenico Preite
© Enrico Bonacina