<http://schema.org/description>
"Mentioned in the Hebrew scriptures, tin is of ancient origins. Tin is an element in Group 14 (The carbon family) and has mainly metallic properties. Tin has atomic number 50 and an atomic mass of 118.710 atomic mass units. Tin, or Sn (from the Latin name Stannum) has been known since ancient times, although it could only be obtained by extraction from its ore. Tin shares chemical similarities with germanium and lead. Tin mining began in Australia in 1872 and today Tin is used extensively."^^<http://www.w3.org/2001/XMLSchema#string>
<http://chemwiki.ucdavis.edu/Inorganic_Chemistry/Descriptive_Chemistry/Elements_Organized_by_Block/2_p-Block_Elements/Group_14%3A_The_Carbon_Family/Chemistry_of_Tin>