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.
Move over London... Paris named as the world's top tourist destination. Paris has once again scooped the top spot as the most popular tourist destination in the world. Some 32.3 million people visited France's City Of Light in 2013, with the Eiffel Tower, the Louvre, and Notre-Dame Cathedral all huge draws.