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 : "Many countertops are made with granite, which contains feldspar, giving them their speckled appearance. " De nombreux plans de travail sont faits de granit, qui contient du feldspath, ce qui leur donne leur aspect moucheté. geology mineral material substance science Chat avec IAJeu de vocabulairePratiquer la lecture
