Titanium dioxide, also known by its chemical formula TiO2, is indeed a naturally occurring mineral found in the Earth's crust. It exists in three main crystalline forms: anatase, brookite, and
rutile, each with distinct crystal structures. These minerals are sourced from various geological environments, ranging from igneous to metamorphic and sedimentary rocks. However, for industrial and commercial use,
titanium dioxide is often manufactured through a synthetic process to achieve the purity and particle size desired for its wide range of applications, including in
paints, sunscreens, and food coloring. Its natural abundance, coupled with its valuable properties such as high refractive index, strong UV light absorption, and resistance to discoloration, makes it a versatile and invaluable component in many industries.