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.
When Americans travel abroad, they donât tend to go far. Most of the most popular destinations are in the Western Hemisphere or Western Europe. Texas nabbed second place with an estimated 87,502,000 tourist visits in 2015, followed by Florida (69,463,000 visits) and New York (55,383,000 visits).