Rutile

Rutile is a black or reddish-brown mineral made of titanium dioxide, typically occurring as needle-like crystals.

The main uses for rutile are the manufacture of refractory ceramic, as a pigment, and for the production of titanium metal. Finely powdered rutile is a brilliant white pigment and is used in paints, plastics, paper, foods, and other applications that call for a bright white color.