Barsotti, G., & Nannoni, R. (2006). Rocce, minerali e miniere delle isole dell'Arcipelago Toscano. Pacini editore, 152 pp.
Comments
Grotta d'Oggi quarry - Isola Elba is the type localite for this mineral. It has been found up to now in several quarries (all closed) on Isola Elba and the Grotta d'Oggi quarry is the hystorical one. Other location on Elba fo