Rutile structure

Titanium dioxide is used in skin products as a sunscreen, pigment, or a thickener. Its most obvious use is as a pigment in white paint. It has multiple mineral forms, the most common form is rutile. The name is from the latin rutilus (red):

Rutile in quartz

The structure is produced by a ccp arrangement of oxygen, with titanium inside half the octahedral holes.

The structure is also adopted by Cassiterite. The sole mineral form of tin oxide and the main ore of tin:

The name is from the greek word for tin - kassiteros.