plagioclase; a group of rock-forming minerals that are a type of feldspar, typically grey or white and found in igneous or metamorphic rocks

a common mineral from the feldspar group that is usually white or gray in color

a rock-forming mineral and type of feldspar

aventurine feldspar; heliolite

a mineral composed of potassium, sodium, and aluminum silicate, often transparent with a pearly luster