Quartz
Morasco area, Formazza, Verbano-Cusio-Ossola Province, Piedmont, Italy
Cluster of quartz crystals with Tessin habit collected in 1977 on the northern slope of Monte Immel, to the west of Lake Morasco. The quartz crystals, the main of which is 20 cm long, are coated with a thin film of iron hydroxides.
Giovanni Gaspari find and collection.
Photo by Gian Carlo Piccoli, published in Piccoli, G.C., Maletto, G., ...