Mining and unloading system of talc deposit in Rodoretto mine (Italy)Mining and unloading system of talc deposit in Rodoretto mine (Italy). Marina Sidorová1 and Peter Čorej 2. In the talc deposit located in Fontane (Prali, near Turine, northern Italy) talc was mined in several mines which are closed now from number of reasons. At present, only the deposit in Rodoretto mine is being mined.deposit talc production,What is talc? | EurotalcAbout 10% of world production comes from these deposits. They are sometimes found in combination with magnesium carbonate deposits. The crude ore is generally grey due to the presence of chlorite (another phyllosilicate), but no up-grading is generally necessary as chlorite, like talc, is a functional mineral conferring.