Tinstone
See TIN.
Titanium usually occurs as a gray, heavy, iron-like sand, which burns brightly in the air and is converted into titanic acid, or in prismatic crystals. In many of its reactions it closely resembles tin. Titanic acid is used for imparting a yellow tint to porcelain glazes, and for the manufacture of artificial teeth. Ores containing titanic iron are supposed to produce an excellent quality of steel.