Explanation:

- Ilmenite: Titanium dioxide is primarily derived from this mineral. It's a significant source for titanium, and thus for titanium dioxide, which is widely used as a white pigment.

- Fluorite: Predominantly a source for fluorine, which is used in the manufacturing of hydrofluoric acid and other chemicals. Not typically related to titanium dioxide production.

- Silica: Composed mostly of silicon dioxide, this is commonly found in sand and is a major component of glass and ceramics, but not related to titanium dioxide.

- Mica: Known for its shiny visual appeal, mica is used in cosmetics and electronics, but is not relevant to the production of titanium dioxide.