Anatase vs. Rutile

Anatasenoun

(mineral) a blue or brown mineral, a form of titanium dioxide, used as a pigment

Rutilenoun

(mineral) The most frequent of the three polymorphs of titanium dioxide, crystalizing in the tetragonal system, TiO₂.

Anatase

Anatase is a metastable mineral form of titanium dioxide (TiO2). The mineral in natural forms is mostly encountered as a black solid, although the pure material is colorless or white.

Rutilenoun

A mineral usually of a reddish brown color, and brilliant metallic adamantine luster, occurring in tetragonal crystals. In composition it is titanium dioxide, like octahedrite and brookite.

Rutilenoun

a mineral consisting of titanium dioxide in crystalline form; occurs in metamorphic and plutonic rocks and is a major source of titanium

Rutilenoun

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

Rutile

Rutile is a mineral composed primarily of titanium dioxide (TiO2), and is the most common natural form of TiO2. Other rarer polymorphs of TiO2 are known, including anatase, akaogiite, and brookite.