For silver the more important deposits commercially are such compounds as the minerals tetrahedrite and argentite (silver sulfide, Ag 2 S), which is usually associated with other sulfides such as those of lead and copper, as well as several other sulfides, some of which contain antimony as well.
France is the most visited European nation with 83.7 million international tourist arrivals in 2014. Established in the late 1700s, the Louvre Art Museum in Paris is one of the most frequented tourist sites in all of France. Europe is a fascinating continent, and it attracts millions of tourists annually.
The World Tourism Organization just came out with new data on the most visited tourism destinations in the world in 2013, and France took the top spot. Perhaps unsurprisingly, France was the most-visited country in 2013 with 84.7 million visitors. The U.S. came right behind with 69.8 million visitors, and Spain was third with 60.7 million visitors.