noun🔗ShareПолевой шпатAny 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. "Многие столешницы сделаны из гранита, который содержит полевой шпат, придающий им крапчатый вид.geologymineralmaterialsubstancescienceChat with AIVocabulary GamePractice Reading
