Opal (Var: Opal-C)
Mount Vesuvius, Somma-Vesuvius Complex, Naples, Campania, Italy
Opal concrection on lava matrix (14 x 11 x 10 cm) collected in a low temperature fumarole in Vesuvius crater in 1994.
Collection and photo Vincenzo Ragone
For Opal-C presence on Mt. Vesuvius fumaroles, please refer to the following brief bibliography:
Russo, M., Punzo, I. (2004): I Minerali del Somma-Vesuvio. 320 pp., Associazione ...
© Vincenzo Ragone