noun Télécharger 🔗Partager Feldspath 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 : "The granite countertop sparkled in the sunlight because it contained small crystals of felspar. " Le comptoir en granit scintillait au soleil car il contenait de petits cristaux de feldspath. geology mineral material substance chemistry science Chat avec IAJeu de vocabulairePratiquer la lecture
