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.
Tourism rates sky-rocketed from the year 2000 onwards as awareness of its multifaceted appeal rose. There was a period between 2006 and 2008 that economic issues hindered the tourism industry somewhat. However, Brazil is the most visited country in the continent of South America today. Mosteiro de Sao Bento Church in Olinda, Pernambuco, Brazil.