Mica

Mica is a group of phyllosilicate minerals characterised by their flat, plate-like crystal structure. In automotive paint systems, mica particles — typically coated with titanium dioxide or iron oxides — are used to create the distinctive sparkle, depth and flip-flop colour effects seen in metallic and pearlescent finishes. The platelet geometry causes light to reflect, refract and interfere at multiple angles, producing the rich visual effects that are a hallmark of premium automotive paint. Beyond aesthetics, mica improves the mechanical and thermal performance of coatings: its layered structure acts as a barrier to moisture and UV radiation, slowing paint degradation and improving long-term durability. Synthetic fluorphlogopite mica is increasingly used where purity and consistency are critical.