- Monte Brugiana north slope
| Bonazzi, Paola, Garbarino, Carlo, Menchetti, Silvio (1992) Crystal chemistry of piemontites: REE-bearing piemontite from Monte Brugiana, Alpi Apuane, Italy. European Journal of Mineralogy, 4 (1) 23-34 doi:10.1127/ejm/4/1/0023 |