Mineral Species containing Titanium (Ti)

Diagnostic tests: 
Titanium can be detected by A); Na₂(NH₄)(PO₄) bead, B); the reduction with metallic tin, or C); the oxidation with H₂O₂.

A). Titanium oxides, dissolved in the Na₂(NH₄)(PO₄) bead, gives a glass that is yellow when hot and colorless when cold in the oxidizing flame. In the reducing flame the bead color is yellow when hot and a delicate violet color when cold. These bead tests are easily interfered with from other elements such as iron and manganese.

B). After fusing the mineral with powdered Na₂CO₃, dissolve the bead in HCl acid which produces a solution of Ti⁴⁺. If this solution is boiled with granulated Tin, Ti³⁺ is produced which gives the solution a delicate violet color.

C). After fusing the mineral with powdered Na₂CO₃, dissolve the bead in 1cc H₂SO₄ acid and 1 cc water. Heat the solution until it becomes clear. When cold, add 1cc 20% H₂O₂ to the mixture, if titanium is present, the solution becomes reddish-yellow to deep amber, depending on the quantity.