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.
Big Ben is the great bell of the clock tower and is very famous in the entire world. 3. Bangkok is the capital of Thailand and is the most visited city in Asia at 10.2 million tourists per year. Big tourist attractions in Bangkok include the Grand Palace, Wat Pho and Wat Arun. 4. Singapore is a world financial center and popular city with tourists.