noun🔗ShareFeldspatAny 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."Many countertops are made with granite, which contains feldspar, giving them their speckled appearance. "Viele Arbeitsplatten werden aus Granit hergestellt, der Feldspat enthält und ihnen ihr gesprenkeltes Aussehen verleiht.geologymineralmaterialsubstancescienceChat with AIVocabulary GamePractice Reading
