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 Mont Saint-Michel in Normandy. France was visited by 85.7 million foreign tourists in 2013, making it the most popular tourist destination in the world. It is, however, only third, and not also first, in income from tourism due to briefer visits. 20% more tourists spent less than half as much as they did in the United States.