Gehlenite
Canzoccoli, Predazzo, Trento Province, Trentino-Alto Adige, Italy
Gray, translucent gehlenite. Rolf Luetcke specimen and photo.
Note: Gray to gray-green, unaltered gehlenite crystals are very rarely found at Canzoccoli. On the contrary, yellow-brown to whitish pseudomorphs after gehlenite, consisting of main grossular and subordinate lizardite and/or vesuvianite, are very common.