noun Herunterladen 🔗Teilen Feldspat 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. " Die Granit-Arbeitsplatte funkelte im Sonnenlicht, weil sie kleine Kristalle von Feldspat enthielt. geology mineral material substance chemistry science Mit KI chattenVokabelspielÜbung: Lesen