noun Télécharger 🔗Partager Feldspaths Any of a large group of rock-forming minerals that, together, make up about 60% of the earth's outer crust. The feldspars are all aluminum silicates of the alkali metals sodium, potassium, calcium and barium. Feldspars are the principal constituents of igneous and plutonic rocks. Examples : "Many granite countertops are made up of quartz, mica, and feldspars. " De nombreux plans de travail en granit sont composés de quartz, de mica et de feldspaths. geology mineral material science Chat avec IAJeu de vocabulairePratiquer la lecture
