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.
France has just released its official tourism figures for 2013. Did it retain its most visited country status once again? Here we run down the top ten most visited countries in 2013 according to the official figures published by the World Tourism Organisation. 10. Thailand Number of visitors: 26.5m Increase on previous year: 18.8 per cent Where tourists outnumber locals.