(Colle Panestra, Molazzana, Alpi Apuane, Lucca, Toscana, Italia)
This particular area is caracterized by tectonic contact between argillitic cretaceous rocks and metamorphic limestones. In this context, we have the occurrence of some mineralizations of iron minerals and copper minerals. Copper minerals are principally represented by chalcopyrite. This mineral analyzed by a laboratory, has also given an interesting % of gold mixed with chalcopyrite
References:
-Farulli C., 1989. Le miniere di rame di Colle a Panestra. Notiz. Gr. Mineral. Fiorent., XVI, n. 1: 4-7