noun Descargar 🔗Compartir Biotita A dark brown mica; it is a mixed aluminosilicate and fluoride of potassium, magnesium and iron. Examples : "The shiny black flecks in the granite countertop are likely grains of biotite, a type of mica. " Las motas negras brillantes en la encimera de granito son probablemente granos de biotita, un tipo de mica. geology mineral substance material chemistry Chat con IAJuego de vocabularioPracticar lectura
